E-31 Any Of Work Equipment, Swing And Travel Cannot Be Locked - Komatsu PC88MR-10 Shop Manual

E-31 Any of work equipment, swing and travel cannot be locked

400-A-Z0-A)
Any of work equipment, swing, and travel cannot be locked.
Failure
Related
information
No. Cause
Defective lock lever
switch
1
(internal short circuit)
Defective PPC lock
lever relay
2
(Internal open or short
circuit)
Hot short circuit in
3
wiring harness
PC88MR-10
Procedure, measuring location, criteria, and remarks
1. Turn starting switch to OFF position.
2. Disconnect connector S14 and connect T-adapter to female side.
Between S14 (female)
Resistance
(1) and (2)
1. Turn starting switch to OFF position.
2. Replace PPC lock lever relay R12 with R08
3. Start engine.
4. Set the lock lever to FREE position.
If work equipment moves, original PPC lock lever relay is defective.
1. Turn starting switch to OFF position.
2. Disconnect connector V01 and connect T-adapter to female side.
3. Turn starting switch to ON position.
4. Turn lock lever to LOCK position.
Voltage Between V01 (female) (2) and (1)
40 Troubleshooting
Troubleshooting of electrical system (E-mode)
Lock lever: LOCK
Lock lever: FREE
(PC88MR-FT7-
Min. 1 Mz
Max. 1 z
Max. 1 V
40-421