Failure Code [Ca351] Inj. Drive Circuit Error - Komatsu PC130-8 Shop Manual

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Failure code [CA351] Inj. drive circuit error

Failure code

• Abnormality occurred in injector drive circuit.

• Limits output and continues operation (Limits common rail pressure).

Problem that

• Output drops.

• Method of reproducing failure code: Start engine.

1 Defective related system

2 Defective fuse

Defective power supply cut-

Possible causes

and standard

value in normal

Disconnection in wiring

(Disconnection in wiring or

defective contact in connec-

Inj. drive circuit error

(Engine controller system)

Standard value in normal state/Remarks on troubleshooting

If another failure code (code of abnormality in injector system) is

indicated, carry out troubleshooting for it.

Check fuse or circuit breaker on machine side directly for defect.

(If fuse is broken or circuit breaker is turned OFF, circuit probably

has ground fault.)

a Prepare with starting switch OFF, then carry out troubleshoot-

ing without turning starting switch ON.

Wiring harness between CE02 (female) (55)

a Prepare with starting switch OFF, then carry out troubleshoot-

ing without turning starting switch ON.

Wiring harness between CE02 (female) (55)

Wiring harness between CE02 (female) (55)

Wiring harness between CE02 (female) (32)

Wiring harness between CE02 (female) (32)

Wiring harness between CE03 (female) (1)

Wiring harness between CE03 (female) (3)

Wiring harness between CE03 (female) (3)

Wiring harness between R23 (female) (3) –

Wiring harness between R24 (female) (3) –

40 Troubleshooting

Failure Code [Ca351] Inj. Drive Circuit Error - Komatsu PC130-8 Shop Manual

Failure code [CA351] Inj. drive circuit error

Troubleshooting

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