TROUBLESHOOTING ERROR CODE AD00MA (COMMON RAIL: DEFECTIVE FUNCTION (MA))

ERROR CODE AD00MA (COMMON RAIL: DEFECTIVE FUNCTION (MA))

ERROR CODE AD10L3 (FUEL SUPPLY PUMP: SEE THE LIST. (L3))

Action code Error codeTrouble

Common rail: See the list. (MA)

(Engine controller system)E02 AD00MA

Contents of

trouble• The fuel pressure of common rail became high (level 2).

Action of

controller

• Flashes caution lamp and turns on caution buzzer.

• Limits output and engine speed for operation.

Problem that

appears on

machine

• Engine output and speed reduces.

Related

information

• The fuel state (fuel pressure) of common rail can be checked in monitoring mode.

(Code 36400: Common rail pressure)

• Method of reproducing error code: Engine start

Possible causes

and standard

value in normal

state

Cause Standard value in normal state/Remarks on troubleshooting

Carry out troubleshooting for error code [AD00L2].

Action code Error codeTrouble

Fuel supply pump: See the list. (L3)

(Engine controller system)CALL E03 AD10L3

Contents of

trouble• Non-pressure transmission (level 1) occurred in fuel supply pump.

Action of

controller

• Flashes caution lamp and turns on caution buzzer.

• Limits output for operation.

Problem that

appears on

machine

• Engine output reduces.

Related

information

• The pressure transmission state (fuel pressure) of fuel supply pump can be checked in monitoring

mode. (Code 36400: Common rail pressure)

• Method of reproducing error code: Engine start

Possible causes

and standard

value in normal

state

Cause Standard value in normal state/Remarks on troubleshooting

1 Defective related systemCheck the displayed error code. If another code is displayed, first car-

ry out troubleshooting for the code.

2 Inappropriate fuel The fuel used may be inappropriate; directly check it.

3Defective low-pressure cir-

cuit equipment

The low-pressure circuit equipment is assumed to be defective; see

Note 2 for troubleshooting.

4 Clogged filter strainerThe filter strainer is assumed to be clogged; see Note 1 for trouble-

shooting.

5Defective electric system of

fuel supply pump PCV

Carry out troubleshooting for error codes [AD11KA], [AD11KB],

[AD51KA], and [AD51KB].

6 Defective fuel supply pump of fuel supply pump

7Defective common rail pres-

sure sensor

The common rail pressure sensor is assumed to be defective; directly

check it.

8 Defective pressure limiterThe pressure limiter is assumed to be defective mechanically; directly

check it.

9 Defective fuel injectorThe fuel injector is assumed to be defective; see Note 3 for trouble-

shooting.

TROUBLESHOOTING

ERROR CODE AD00MA (COMMON RAIL: DEFECTIVE FUNCTION (MA))

ERROR CODE AD10L3 (FUEL SUPPLY PUMP: SEE THE LIST. (L3))

TROUBLESHOOTING ERROR CODE AD10L3 (FUEL SUPPLY PUMP: SEE THE LIST. (L3))

Note 1: Follow the procedure below to check, clean, and replace the filter and strainer.

1) Gauze filter: Disassemble and check. If the filter is clogged, clean it.

2) Gauze filter upstream strainer: If the gauze filter is clogged, also clean the upstream strainer.

3) Fuel filter: If abnormality is not yet recovered after steps 1) and 2), replace the fuel filter.

Note 2: When the low-pressure equipment is defective, check the following points:

1) Remaining fuel quantity

2) Feed pump fixing, abrasion, and filter clogging

3) Leak and clogging of low-pressure fuel pipe

4) Defective bypass valve function or other parts assembled erroneously (See the figure below.)

5) Clogged fuel filter

6) Fuel mix in oil pan (Fuel leak in head cover)

• Fuel low-pressure circuit pressure: 0.15 – 0.3MPa {1.5 – 3.0kg/cm2}

Figure: Overflow valve 1, bypass valve 2, and fuel inlet joint 3 mounting positions

• Overflow valve 1: Spring viewed from both holes

• Bypass valve 2: Spring viewed from nut hole side

• Fuel inlet joint 3: Gauze filter viewed from both holes