4.2 infrared remote central locking (ircl)...

32
4.2 Infrared Remote Central Locking (IRCL) Contents ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– 4.2 Model 140 up to M.Y. 1995 Page Diagnosis Function Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11/1 Diagnostic Trouble Code (DTC) Memory . . . . . . . . . . . . . . . . 12/1 Electrical Test Program Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21/1 Preparation for Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22/1 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23/1 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL C/1

Upload: others

Post on 13-Jul-2020

6 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Contents –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––4.2 Model 140 up to M.Y. 1995

PageDiagnosisFunction Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11/1Diagnostic Trouble Code (DTC) Memory . . . . . . . . . . . . . . . . 12/1

Electrical Test Program Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21/1Preparation for Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22/1Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23/1

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL C/1

Page 2: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Diagnosis – Function Test

Preliminary work: Check operation of central locking,see PSE/CL 11 O 1.0 – 9.0 (3.1)Check batteries in infrared transmitter key,see SMS, Repair Instructions, Job No. . . . . . . . . . . . . . . 80–420

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 1

P80-0144-55

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

bDiagnostic Manual • Body and Accessories • 04/95 4.2 IRCL 11/1

Page 3: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Diagnosis – Function Test

Note:If the windows cannot be fully opened or closed using the one-touch feature (e.g., after the vehicle’s battery has been disconnected), re-synchronize windowsby pressing the upper half of each window switch to the 2nd detent until the window is completely closed and hold for an additional 2 seconds. Repeatprocedure for each window.

Note for models as of 12/93:If an IR transmitter is lost, it can be disabled from controlling the IRCL system by de-synchronizing the IRCL control module and then resynchronizing (recoding)the remaining IR transmitter(s). Thus, only the mechanical locks need to be replaced to assure vehicle security.

De-synchronizing/Re-synchronizing Infrared Signal for IRCL

De-synchronizing (as of 12/93 production only)1. Ground the IRCL pin in the data link connector (X11/4) for 30 - 40 seconds with the ignition ON. 2. De-synchronization can also be performed with the impulse counter scan tool by connecting the scan tool to the data link connector (see section 0), turning

the ignition ON and pressing the start button for 30 - 40 seconds. 3. The HHT can be used as well by following the menu-driven commands.

Re-synchronizing (as of 12/93 production only)

1. To synchronize the infrared transmitter, point the infrared transmitter toward a receiver and press button momentarily. Using the mechnical key, s witch onignition within 30 seconds. This will synchronize and enable the control module to recognize the infrared transmitter.

Preparation for Test:1. Battery voltage 11 – 14 V,2. Fuse F4–2 and F4–15 ok,3. Central locking system in proper operating condition,4. Batteries in key holder (infrared transmitter) ok,5. Infrared transmitter synchronized (see note below),6. Key removed from steering lock,7. Side windows lowered approx. 100 mm (4 in.),

8. Sliding/pop-up roof open,(Windows must be synchronized for steps 7 and 8, see note below)

9. Doors and trunk lid closed,10. Central locking system unlocked.

Electrical wiring diagramsSee Electrical Troubleshooting Manual, Model 140.

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/95 4.2 IRCL 11/2

Page 4: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Diagnosis – Function Test

Test step/Test scope Test condition Nominal value Possible cause/Remedy 1)

O 1.0 Locking of vehicle withinfrared remote control vialeft front door IR receiver(A26/1).

Lock vehicle using IR transmitter via theleft front door.

Vehicle is locked. All red indicator lamps blink for a maximum of approx. 3 seconds (vehicles up to06/93).Red indicator lamp of receiver in leftfront door blinks for a maxium ofapprox. 3 seconds (vehicles as of07/93).

23 O 1.0 – 11.0

O 2.0 Unlocking of vehicle withinfrared remote control vialeft front door IR receiver(A26/1).

Unlock vehicle using IR transmitter viathe left front door.

Vehicle is unlocked. All green indicatorlamps blink for a maximum of approx. 3 seconds (vehicles up to06/93).Green indicator lamp of receiver in leftfront door blinks for a maxium ofapprox. 3 seconds (vehicles as of07/93).

23 O 1.0, 8.0 – 10.0, 12.0.

O 3.0 Locking of vehicle withinfrared remote control viaright front door IR receiver(A26/2).

Lock vehicle using IR transmitter via theright front door.

Vehicle is locked. All red indicator lamps blink for a maximum of approx. 3 seconds (vehicles up to06/93).Red indicator lamp of receiver in rightfront door blinks for a maxium ofapprox. 3 seconds (vehicles as of07/93).

23 O 1.0 – 7.0, 13.0 – 16.0.

1) Observe Preparation for Test, see 22.

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 11/3

Page 5: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Diagnosis – Function Test

Test step/Test scope Test condition Nominal value Possible cause/Remedy 1)

O 4.0 Unlocking of vehicle withinfrared remote control viaright front door receiver(A26/2).

Unlock vehicle using IR transmitter viathe right front door.

Vehicle is unlocked. All green indicatorlamps blink for a maximum of approx. 3 seconds (vehicles up to06/93).Green indicator lamp of receiver inright front door blinks for a maxium ofapprox. 3 seconds (vehicles as of07/93).

23 O 1.0, 13.0 – 15.0, 17.0.

O 5.0 Locking of vehicle withinfrared remote control viatrunk lid receiver (A26/3).

Lock vehicle using IR transmitter via thetrunk lid.

Vehicle is locked. All red indicator lamps blink for a maximum of approx. 3 seconds (vehicles up to06/93).Red indicator lamp of receiver in trunklid blinks for a maxium of approx. 3seconds (vehicles as of 07/93).

23 O 1.0 – 7.0, 18.0 – 21.0.

O 6.0 Unlocking of vehicle withinfrared remote control viatrunk lid receiver (A26/3).

Unlock vehicle using IR transmitter viathe trunk lid.

Vehicle is unlocked. All green indicatorlamps blink for a maximum of approx. 3 seconds (vehicles up to06/93).Green indicator lamp of receiver intrunk lid blinks for a maxium of approx.3 seconds (vehicles as of 07/93).

23 O 1.0, 18.0 – 20.0, 22.0.

O 7.0 Close side windows andsliding/pop-up roof withinfrared remote control.

Point IR transmitter towards one of theIR receivers and press transmit buttonfor > 1 second.

Side windows and sliding/pop-uproof close.

23 O 1.0, 8.0 – 22.0

1) Observe Preparation for Test, see 22.

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 11/4

Page 6: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Diagnosis – Function Test

Test step/Test scope Test condition Nominal value Possible cause/Remedy 1)

O 8.0 Open side windows andsliding/pop-up roof withinfrared remote control.

With the side windows and sliding/pop-uproof open, lock vehicle using infraredtransmitter. Within 10 seconds, point IRtransmitter towards one of the IRreceivers and press transmit button for> 4 seconds.

Side windows and sliding/pop-uproof open.

23 O 1.0, 8.0 – 22.0

O 9.0 Indication of an improperlyclosed door or trunk lid(vehicles up to 11/93).

Open one of the doors or the trunk lid.Lock vehicle using IR transmitter

Red indicator blinks for approx. 10seconds.

23 O 1.0 – 5.0, 7.0 – 11.0, 13.0 –16.0, 18.0 – 21.0.

O 10.0 Activate immobilization(vehicles as of 12/93).

Lock vehicle using IR transmitter. Try to start engine.

Starter motor does not turn.Engine does not start.

23O 23.0Wiring,Starter lock-out relay module (K38).

O 11.0 Deactivate immobilization(vehicles as of 12/93).

Unlock vehicle using IR transmitter.Try to start engine.

Starter motor turns.Engine starts.

23O 23.0Wiring,Circiut 15,Circuit 50,Starter lock-out relay module (K38),Ignition starter switch (S2/1)2),Glow/starter switch (S2/2) 3),Starter (M1).

1) Observe Preparation for Test, see 22.2) Vehicles with gasoline engine3) Vehicles with diesel engine

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 11/5

Page 7: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Diagnosis - Diagnostic Trouble Code (DTC) Memory

Preliminary work:Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Preparation for Test:• Connect impulse counter scan tool or Hand-Held Tester (HHT) to 38-

pole data link connector (X11/4) according to connection diagramshown in section 0.

Note:Connect yellow wire of impulse counter scan tool to socket 31.

Electrical wiring diagramsSee Electrical Troubleshooting Manual, Model 140, Volume 2.

Special Tools

Pulse counter

124 589 19 21 00

Adapter

140 589 14 63 00

Equipment

Hand-held Tester (HHT) See applicable Service Information in groups 58 and99.

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL 12/1

Page 8: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Diagnosis - Diagnostic Trouble Code (DTC) Memory

Diagnostic trouble code (DTC)8 A

Possible cause Test step/Remedy 1)

I 00I No malfunction in memory. 2)

2 002 Open circuit - left front door actuator. 23 O 2.0

3 003 Warning buzzer - open circuit. 23 O 6.0

4 004 Warning buzzer - short circuit to ground. 23 O 6.0

5 005 Red indicator lamps - short to ground. 23 O 11.0, 16.0, 21.0

6 006 Green indicator lamps - short to ground. 23 O 12.0, 17.0, 22.0

7 007 Short to positive, lock circuit 1 23 O 8.0, 13.0, 18.0

8 008 Short to positive, lock circuit 2 23 O 8.0, 13.0, 18.0

9 009 Red indicator lamps - short to positive. 23 O 11.0, 16.0, 21.0

I0 0I0 Green indicator lamps - short to positive. 23 O 12.0, 17.0, 22.0

II 0II IRCL control module (N54). N54

I2 0I2 Immobilization output, short after circuit 30. 23O 23.0

1) Observe Preparation for Test, see 22.2) If the diagnostic trouble code “I” (no malfunction in memory) appears, but the vehicle cannot be locked or unlocked from either door or trunk lid, perform Function Test, Test steps 1 – 9 with the

second infrared transmitter. If the infrared remote control functions with the second transmitter, replace the first transmitter. If the infrared remote control does not function with the second transmitter,perform “Test” ( 23).

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL 12/2

Page 9: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Electrical Test Program – Component Locations

P80-5182-57

Sedan

Figure 11 Infrared transmitterA26/1 Left front door IR receiverA26/2 Right front door IR receiverA26/3 Trunk lid IR receiver

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 21/1

Page 10: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Electrical Test Program – Component Locations

P80-5186-57

Sedan

Figure 2K38 Starter lock-out relay moduleN54 IRCL control module

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 21/2

Page 11: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Electrical Test Program – Component Locations

P80-5187-57

Coupé

Figure 3K38 Starter lock-out relay moduleN54 IRCL control module

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 21/3

Page 12: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Electrical Test Program – Component Locations

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 4

A26/1 Left front door IR receiverA26/2 Right front door IR receiver

(mirror image of left shown)

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 5

A26/3 Trunk lid IR receiver (sedan)

P80-2216-13 P80-2215-13 P80-5081-13

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 6

A26/3 Trunk lid IR receiver (coupé)

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 21/4

Page 13: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Electrical Test Program – Component Locations

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 7

A37, A37/1 PSE control module

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 8

F4 Rear fuse box (17-fuse, in trunk)

P80-2241-13 P80-2232-13 P80-2214-13

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 9

N26 ATA control moduleN54 IRCL control module (sedan)

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 21/5

Page 14: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Electrical Test Program – Component Locations

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 10

N54 IRCL control module (coupé)

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 11

S2/1 Ignition/starter switch

P80-5082-13 P46-2008-13A

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 21/6

Page 15: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Electrical Test Program - Preparation for Test

Preliminary work:Diagnosis - Diagnostic Trouble Code (DTC) Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Preparation for Test:1. Provide access to IRCL control module (N54) .2. Provide access to PSE control module.3. Disconnect ATA control module (N26).4. Connect socket box with test cable according to connection diagram,

see 22 Figure 1.

Electrical wiring diagramsSee Electrical Troubleshooting Manual, Model 140, Volume 2.

Special Tools

35-pin socket box

124 589 00 21 00

27-pin test cable

126 589 20 63 00

Electrical connecting set

201 589 00 99 00

Equipment

Multimeter 1) Fluke models 23, 83, 85, 87

1) Available through the MBUSA Standard Equipment Program.

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL 22/1

Page 16: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Electrical Test Program - Preparation for Test

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 1001 IRCL control module connector002 Test cable003 Multimeter004/050 Socket box (35-pole)N54 IRCL control module

Connection Diagram - Socket Box(Sedan)

P80-0181-57

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL 22/2

Page 17: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140 –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Electrical Test Program - Preparation for Test

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �

Figure 1001 IRCL control module connector002 Test cable003 Multimeter004/050 Socket box (35-pole)N54 IRCL control module

Connection Diagram - Socket Box(Coupé)

P80-5078-57

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

b Diagnostic Manual • Body and Accessories • 04/94 4.2 IRCL 22/3

Page 18: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

1.0 IRCL control module (N54)circuit 30, circuit 15Voltage supply 27 w

N54k

c L 9 Ignition: OFF 11 – 14 V O 1.1,Circuit 31.

27 w

N54k

c L 14 Ignition: OFF

Ignition: ON

< 1 V

11 – 14 V

O 1.1,Circuit 31.

1.1

Circuit 30 o c

N54kL 9 Ignition: OFF 11 – 14 V Circuit 30.

Circuit 15 o c

N54k

L 14 Ignition: OFF

Ignition: ON

< 1 V

11 – 14 V

Circuit 15.

b Diagnostic Manual • Body and Accessories • 04/95 4.2 IRCL 23/1

Page 19: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

2.0 Vehicles up to11/93 only

Left front dooractuator (S47)Resistance

27 w

N54k

b L 6

Disconnect IRCL controlmodule (N54) from k. Disconnect ATA controlmodule (N26).Central locking:Locked manually with key

Unlocked manually with key

< 5 ]

> 20 k ]

Wiring,S47.

Wiring,S47.

3.0 Sedans up to11/93 only

Left rear rotary tumbler microswitch (S87/2)Resistance 27 w

N54k

b L 15

Disconnect N54 from k.

Rest position(Left rear door closed)

Operate left rear catch byopening door.

>20 k]

<5 ]

Wiring,S87/2.

Wiring,S87/2.

b Diagnostic Manual • Body and Accessories • 04/95 4.2 IRCL 23/2

Page 20: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

4.0 Sedans up to 11/93 only

Right rear door rotarytumbler microswitch(S87/3)Resistance

27 w

N54k

b L 7

Disconnect N54 from k.

Rest position(Right rear door closed)

Operate right rear tumblerby opening door.

> 20 k ]

< 5 ]

Wiring,S87/3.

Wiring,S87/3.

5.0 Vehicles up to 11/93 only

Right front door rotarytumbler microswitch(S87/6)Resistance

27 w

N54k

b L 17

Disconnect N54 from k.

Rest position(Right front door closed)

Operate right front catchby opening door.

>20 k]

<5 ]

Wiring,S87/6.

Wiring,S87/6.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/3

Page 21: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

6.0 3

4

Vehicles up to 11/93 only

Ignition/starterswitch (S2/1)Warning buzzer contact

16 w

N54k

c L 9

Disconnect N54 from k.

Remove key from ignition.

Ignition key in position “1”.

11 – 14 V

< 1 V

Wiring,3.1 PSE 23 O 4.0, 5.0.

Wiring,3.1 PSE 23 O 4.0, 5.0.

7.0 Vehicles up to 11/93 only

Rotary tumbler/trunk lidmicroswitch (S88/1)Resistance

26 w

N54k

c L 9

Disconnect N54 from k.

Close tumbler by hand.

Open trunk lid tumbler.

< 1 V

11 – 14 V

Wiring,3.1 PSE/RTG 23 O 1.0.

Wiring,3.1 PSE/RTG 23 O 1.0,3.1 PSE/CL 23 O 8.0,Closing assist supplypump (M14/3).

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/4

Page 22: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

8.0 7

8

IRCL control module (N54)Left front door lock switch (S86/1)Voltage supply

27 w

N54k

c L 11 All doors closed andlocked manually withkey. 11 – 14 V

Wiring,3.1 PSE/CL 23 O 4.0,(on vehicles up to 11/93).N54.

Unlock vehicle via leftfront door with IRtransmitter and holdbutton.

<1 VGreen indicatorlamp flashes.

Wiring,O 9.0 to 12.0,N54.

27 w

N54k

c L 23 All doors closed andunlocked manually withkey.

11 – 14 V Wiring,3.1 PSE/CL 23 O 4.0,(on vehicles up to 11/93).N54.

Lock vehicle via left frontdoor with IR transmitterand hold button.

<1 VRed indicatorlamp flashes.

Wiring,O 9.0 to 12.0,N54.

9.0 Left front door IR receiver (A26/1) Voltage supply 13 w

N54k

c L 12

11 – 14 V Wiring,O 9.1,N54.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/5

Page 23: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

9.1 A26/1Voltage supply 2 w

A26/1c L 3 Remove A26/1. 11 – 14 V Wiring,

N54.

10.0 Left front door IR receiver (A26/1) Infrared signal control circuit 27 w

N54k

c L 18

Lock vehicle using IRtransmitter at left front doorand keep buttondepressed.After completion of thelocking process, readvalue.Afterwards, release buttonand read second value.

Difference ofvalues betweenbuttondepressed andbutton releasedapprox.+0.3 – +0.5 V.

Wiring,A26/1.

11.0 L9

Left front door IR receiver (A26/1)Red indicator lamp

Disconnect N54 from k.

No bridge connected.Red indicatorlamp off.

Wiring,A26/1,N54.

273

N54k

uu

139

Both bridges connected. Red indicatorlamp lights.

Wiring,A26/1.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/6

Page 24: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

12.0 6

I0

Left front door IR receiver (A26/1)Green indicator lamp

Disconnect N54 from k.

No bridge connected.Green indicatorlamp off.

Wiring,A26/1,N54.

2710

N54k

uu

139

Both bridges connected. Green indicatorlamp lights.

Wiring,A26/1.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/7

Page 25: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

13.0 7

8

IRCL control module (N54)Right front door lock switch (S87/1)Voltage supply

27 w

N54k

c L 11 All doors closed andlocked manually withkey. 11 – 14 V

Wiring,3.1 PSE/CL 23 O 2.0,(vehicles up to 11/93 only).N54.

Unlock vehicle via rightfront door with IRtransmitter and holdbutton.

<1 VGreen indicatorlamp flashes.

Wiring,O 14.0 to 17.0,N54.

27 w

N54k

c L 23 All doors closed andunlocked manually withkey.

11 – 14 V Wiring,3.1 PSE/CL 23 O 2.0,(vehicles up to 11/93 only).N54.

Lock vehicle via right frontdoor with IR transmitterand hold button.

<1 VRed indicatorlamp flashes.

Wiring,O 14.0 to 17.0,N54.

14.0 Right front door IR receiver (A26/2) Voltage supply 13 w

N54k

c L 22

11 – 14 V Wiring,O 14.1,N54.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/8

Page 26: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

14.1 A26/2Voltage supply 2 w

A26/2c L 3 Remove A26/2. 11 – 14 V Wiring,

N54.

15.0 Right front door IR receiver (A26/2) Infrared signal control circuit 27 w

N54k

c L 8

Lock vehicle using IRtransmitter at right frontdoor and keep buttondepressed.After completion of thelocking process, readvalue.Afterwards, release buttonand read second value.

Difference ofvalues betweenbuttondepressed andbutton releasedapprox.+0.3 – +0.5 V.

Wiring,A26/2.

16.0 L9

Right front door IR receiver (A26/2)Red indicator lamp

Disconnect N54 from k.

No bridge connected.Red indicatorlamp off.

Wiring,A26/2,N54.

271

N54k

uu

139

Both bridges connected. Red indicatorlamp lights.

Wiring,A26/2.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/9

Page 27: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

17.0 6

I0

Right front door IR receiver (A26/2)Green indicator lamp

Disconnect N54 from k.

No bridge connected.Green indicatorlamp off.

Wiring,A26/2,N54.

272

N54k

uu

139

Both bridges connected. Green indicatorlamp lights.

Wiring,A26/2.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/10

Page 28: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

18.0 7

8

IRCL control module (N54)Trunk lid lock switch (S88/2)Voltage supply

27 w

N54k

c L 11 All doors closed andlocked manually withkey. 11 – 14 V

Wiring,3.1 PSE/CL 23 O 3.0,(vehicles up to 11/93 only).N54.

Unlock vehicle via trunk lidwith IR transmitter andhold button.

<1 VGreen indicatorlamp flashes.

Wiring,O 19.0 to 22.0,N54.

27 w

N54k

c L 23 All doors closed andunlocked manually withkey.

11 – 14 V Wiring,3.1 PSE/CL 23 O 3.0,(vehicles up to 11/93 only).N54.

Lock vehicle via trunk lidwith IR transmitter andhold button.

<1 VRed indicatorlamp flashes.

Wiring,O 19.0 to 22.0,N54.

19.0 Trunk lid IR receiver (A26/3) Voltage supply 24 w

N54k

c L 5

11 – 14 V Wiring,O 19.1,N54.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/11

Page 29: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

19.1 A26/3Voltage supply 2 w

A26/3c L 3 Remove A26/3. 11 – 14 V Wiring,

N54.

20.0 Trunk lid IR receiver (A26/3) Infrared signal control circuit 27 w

N54k

c L 4

Lock vehicle using IRtransmitter at trunk andkeep button depressed.After completion of thelocking process, readvalue.Afterwards, release buttonand read second value.

Difference ofvalues betweenbuttondepressed andbutton releasedapprox.+0.3 – +0.5 V.

Wiring,A26/3.

21.0 L9

Trunk lid IR receiver (A26/3)Red indicator lamp

Disconnect N54 from k.

No bridge connected.Red indicatorlamp off.

Wiring,A26/3,N54.

2721

N54k

uu

249

Both bridges connected. Red indicatorlamp lights.

Wiring,A26/2.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/12

Page 30: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

O N A Test scope Test connection Test condition Nominal value Possible cause/Remedy

22.0 6

I0

Trunk lid IR receiver (A26/3)Green indicator lamp

Disconnect N54 from k.

No bridge connected.Green indicatorlamp off.

Wiring,A26/3,N54.

272

N54k

u 139

Both bridges connected. Green indicatorlamp lights.

Wiring,A26/2.

23.0 I2 Vehicles as of 12/93 only

Immobilization output 25 w

N54k

c L 9

Unlock vehicle by pointingIR transmitter toward oneof the three IR receivers.

Open driver‘s window.Lock vehicle by pointing IRtransmitter toward one ofthe three IR receivers.Ignition: ON

11 – 14 V

< 1 V

Wiring,O 1.0, 8.0 – 22.0,N54.

24.0 Diagnosis output

27 w

N54k

c L 19 10 – 14 VWiring,N54.

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/13

Page 31: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

P54-2786-13

Figure 1

W6 Ground (left wheelhousing in trunk) (coupé)

P54-2842-13

Figure 3

X11/15 Diagnostic intermediate connector (taillampharness) (16-pole)

P80-2240-13

Figure 2

W7/1 Ground (right rear taillamp in trunk) (sedan)

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/14

Page 32: 4.2 Infrared Remote Central Locking (IRCL) Contentsmanual.startekinfo.com/volumes/ba2/4_2/content.pdfCentral locking system in proper operating condition, 4. Batteries in key holder

4.2 Infrared Remote Central Locking (IRCL) Model 140

Electrical Test Program - Test

P80-2211-13

Figure 4

X35/1 Left front door separation point

X35/2 Right front door separation point (mirror image of left shown)

P82-2995-13A

Figure 6

X99/1 Terminal block (left front door ground)

X99/2 Terminal block (right front door ground)(mirror image of left shown)

P54-2808-13

Figure 5

X35/3 Left rear door separation point (sedan only)

X35/4 Right rear door separation point (sedan only)(mirror image of left shown)

b Diagnostic Manual • Body and Accessories • 09/94 4.2 IRCL 23/15