Failure Code [Dw91Kb] Travel Junction Sol Short - Komatsu PC130-8 Shop Manual

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Failure code [DW91KB] Travel junction sol short

Failure code

• When output to travel junction solenoid was turned ON, short circuit was detected in circuit.

• Turns output to travel junction solenoid OFF.

• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.

Problem that

• Machine is not steered easily during travel.

• Operating condition of travel junction solenoid can be checked with monitoring function. 

(Code: 02300 Solenoid 1)

• Method of reproducing failure code: Start engine + Steer machine with right and left travel levers.

Defective travel junction

solenoid (Internal short cir-

cuit or ground fault)

Possible causes

Ground fault in wiring har-

and standard

ness (Short circuit with GND

value in normal

3 Defective pump controller

Travel junction solenoid system short

(Pump controller system)

Standard value in normal state/Remarks on troubleshooting

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

Between (2) – chassis ground

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

Wiring harness between CP02 (female)

(110) – V03 (female) (2) and chassis ground

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

Between (110) – (115), (117),

Between (110) – chassis ground

ing without turning starting switch ON.

Between (1) – (2)

ing without turning starting switch ON.

CP02 (female)

40 Troubleshooting