chrysler dakota part14

7/28/2019 chrysler dakota part14

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TURN SIGNAL AND HAZARD WARNING SYSTEMS

CONTENTS

page page

DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . 1

SERVICE PROCEDURES . . . . . . . . . . . . . . . . . . . 4

GENERAL INFORMATION

Following are general descriptions of the major

components in the Dakota turn signal and hazard

warning systems. Refer to Group 8W - Wiring Dia-

grams for complete circuit descri ptions and diagrams.

TURN SIGNAL SYSTEM

With the ignition switch in the ON or ACCESSORYposition and the multi-function switch control lever

moved up (right turn) or down (left turn), the turn

signal system is activated.

When the turn signal system is activated, the se-

lected (right or left) turn signal indicator lamp, front

park/turn signal lamp, front side marker lamp and

rear tail/stop/turn signal lamp bulb filaments will

flash.

HAZARD WARNING SYSTEM

The hazard warning is activated by a switch button

located on the top of the steering column between the

steering wheel and the instrument panel. The hazardwarning flasher receives battery feed at all times,

and the system is functional regardless of ignition

switch position. The hazard warning switch button is

identified with a double triangle. Pull the switch but-

ton out (standard steering column) or push in on the

switch button (tilt steering column) to activate the

hazard warning system.

When the hazard warning system is activated, all

(right and l eft) turn signal indicator, front park/turn

signal lamp, front side marker lamp and rear tail/

stop/turn signal lamp bulb filaments will flash.

TURN SIGNAL FLASHER

The turn signal flasher is located in the fuseblock

module (F ig. 1). I t contains one fixed contact point

and one contact point attached to a flexible bimetal

arm. The contact points are normally closed. When a

turn signal is activated, current flows through the

flasher. As the current flows through the bimetal arm

it heats and flexes to pull the contact points open,

stopping current flow. As the bimetal arm cools it

straightens, until the contact points close and the cy-cle repeats.

The standard flasher is designed to handle the cur-

rent flow requirements of the factory installed light-

ing. If supplemental lighting is added to the turn

signal circuits such as when towing a trailer with

lights, the current flow through the flasher increases.

This causes the flash rate to increase. I t is recom-

mended that the standard flasher be replaced with aheavy-duty (hazard warning) flasher when supple-

mental lighting is added.

However, when a turn signal bulb fails with a stan-

dard flasher, the remaining bulbs in that circuit will

light, but not flash. This will give the driver an indi-

cation to check the turn signal bulbs. Because a

heavy-duty flasher has different internal circuitry, a

failed bulb will not prevent the remaining bulbs in

the circuit from flashing. Therefore, it is recom-

mended that an occasional visual inspection of exte-

rior turn signal lamp operation be performed when a

heavy-duty fl asher is installed.

Fig. 1 Turn Signal and Hazard Warning Flashers

TURN SIGNAL AND HAZARD WARNING SYSTEMS 8J - 1


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HAZARD WARNING FLASHER

The hazard warning flasher is located in the fuse-block module (Fig. 1). The hazard warning flashercontains two normally open contact points mountedto two flexible arms. A bimetal strip is attached be-tween the two arms. When the hazard warning is ac-tivated, current flows through the flasher. As the

current fl ows through the bimetal strip it heats andpulls the flexible arms together until the contactpoints close, allowing current flow to the l amps. Asthe bimetal strip cools, the contact points are pushedopen and the cycle repeats.

MULTI-FUNCTION SWITCH

The multi-function switch assembly (Fig. 2) ismounted to the left side of the steering column. Thisswitch contains electrical circuitry for the followingfunctions: turn signals hazard warning

headlamp beam selection headlamp optical horn windshield wipers windshield washers.

The information contained in this group addressesonly the switch functions for the turn signal and haz-ard warning circuits. For information relative toother switch functions, refer to the appropriategroup. However, the multi-function switch can not berepaired. If any function of the switch is faulty, theentire switch assembly must be replaced.TURN SIGNAL INDICATOR LAMPS

These lamps are l ocated in the i nstrument cluster.

They flash with the exterior turn signal lamps to

give the driver a visual indication that a turn signal

or the hazard warning circuit is operating. For diag-

nosis and service of this component, refer to Group

8E - I nstrument Panel and Gauges.

TURN SIGNAL LAMPS

The exterior lamps i ncluded in the turn signal and

hazard warning circuits include: the front park/turn

signal, the front side marker, and the rear tail/stop/

turn signal. F or diagnosis and service of these lamps,

refer to Group 8L - L amps.

DIAGNOSIS

When diagnosing the turn signal or hazard warn-ing circuits, remember that high generator outputcan burn out bulbs rapidly and r epeatedly. I f this is aproblem on the vehicle being diagnosed, refer toGroup 8A - Battery/Starting/Charging Systems Diag-nostics to test charging system.

WARNING: ON VEHICLES EQUIPPED WITH AN AIR-

BAG, REFER TO GROUP 8M - RESTRAINT SYS-

TEMS BEFORE ATTEMPTING STEERING WHEEL

COMPONENT DIAGNOSIS OR SERVICE. FAILURE

TO TAKE PROPER PRECAUTIONS COULD RESULT

IN ACCIDENTAL AIRBAG DEPLOYMENT AND POS-

SIBLE PERSONAL INJURY.

TURN SIGNAL

(1) Turn ignition switch to ON position. Move turnsignal lever down for left turn signal problem, or upfor right turn signal problem. Observe the turn indi-cator lamp in the i nstrument cluster. I f the l amp

comes on but does not flash, check for a turn signal

bulb that is not lit. Replace that bulb or repair cir-

cuits to that lamp, as required. Test operation. I f

turn indicator does not light or still doesnt flash,

continue to next step.

(2) Remove and inspect fuse 11 i n fuseblock mod-

ule. Replace fuse, if required.

(3) With ignition switch in ON position, check for

battery voltage at fuse 11. I f OK , go to next step. I fnot OK , repair circuit to ignition switch as required.

(4) With ignition switch in ON position, place turn

signal lever in neutral position. T here should be bat-

tery voltage at the fuse side of the turn signal flasher

(L5 circuit). If OK, go to next step. If not OK, repair

circuit between fuse and bottom terminal of turn sig-

nal flasher.

(5) Replace turn flasher with known good unit ofthe same rating. The lamps should flash. If OK, dis-card faulty flasher. I f not OK, re-install originalflasher and go to next step.

Fig. 2 Multi-Function Switch

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(6) L ocate the multi-function switch connector. Seediagnosis for Multi-Function Switch, in this group.Check for battery voltage at the multi-functionswitch connector cavity 17. I f OK , replace multi-func-tion switch. I f not OK , r epair open circuit to flasher(L6 circuit).

HAZARD WARNING

(1) Check fuse F1 in power distribution center. I fOK , go to next step. I f not OK , replace fuse.

(2) Check for battery voltage at the fuse side of thehazard warning flasher (L9 circuit). I f OK, go to nextstep. I f not OK , r epair open circuit between fuse andflasher.

(3) Replace hazard fl asher with known good unit ofthe same rating. The lamps should flash. I f OK , dis-

card faulty flasher. I f not OK, re-install originalflasher and go to next step.

(4) L ocate the multi-function switch connector. Seediagnosis for Multi-Function Switch, in this group.Check for battery voltage at the multi-functionswitch connector cavity 13. If OK , replace multi-func-tion switch. I f not OK, repair open circuit to flasher

(L19 circuit).

MULTI-FUNCTION SWITCH

(1) Access multi-function switch connector and re-move. See service procedures for Multi -FunctionSwitch, in this group.

(2) Using an ohmmeter, perform switch continuitychecks at the switch terminals as shown in the chart(Fig. 3).

Fig. 3 Multi-Function Switch Continuity

TURN SIGNAL AND HAZARD WARNING SYSTEMS 8J - 3


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SERVICE PROCEDURES

WARNING: ON VEHICLES EQUIPPED WITH AN AIR-

BAG, REFER TO GROUP 8M - RESTRAINT SYS-

TEMS BEFORE ATTEMPTING STEERING WHEEL

COMPONENT DIAGNOSIS OR SERVICE. FAILURE

TO TAKE PROPER PRECAUTIONS COULD RESULT

IN ACCIDENTAL AIRBAG DEPLOYMENT AND POS-

SIBLE PERSONAL INJURY.

MULTI-FUNCTIONSWITCH REMOVE/INSTALL

(1) Disconnect battery negative cable.

(2) Remove tilt lever (if equipped).

(3) Remove screws along bottom edge of knee

blocker (Fig. 4).

(4) Pull knee blocker down to disengage slide tabs

and remove.(5) Remove both upper and lower shrouds from col-

umn (Fig. 5).

(6) Remove lower fixed column shroud.

(7) L oosen steering column upper bracket nuts. Do

not remove nuts.

(8) Move upper fixed column shroud to gain access

to rear of multi-function switch (F ig. 6).

(9) Remove multi-function switch tamper proof

mounting screws (tamper proof torx bit Snap On

TT XR20B2 or equivalent required).

(10) Gently pull switch away from column. L oosen

connector screw. The screw will remain in the con-

nector.

(11) Remove wiring connector from multi-function

switch.

(12) Reverse removal procedures to install. Tightenfasteners as follows: multi-function switch connector screw - 1.9 Nm

(17 in. lbs.) multi-function switch retaining screws - 1.9 Nm(17 in. lbs.) steering column upper bracket nuts - 12 Nm (110in. lbs.).

Fig. 4 Knee Blocker Remove/Install

Fig. 5 Steering Column Shrouds Remove/Install

Fig. 6 Multi-Function Switch Connector

8J - 4 TURN SIGNAL AND HAZARD WARNING SYSTEMS

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