Failure Code [Ca442] Battery Voltage High Error - Komatsu PC88MR-10 Shop Manual

Failure code [CA442] Battery Voltage High Error

Action level Failure code
L04 CA442
Detail of
High voltage (approximately 36 V or higher) appears in controller power supply circuit.
failure
Action of
Sets power supply voltage to fixed value (24 V) and runs engine.
controller
Engine continues to run normally, but it may stop during running or may not be able to
Problem on
restart if it is stopped.
machine
Method of reproducing failure code: Turn starting switch to ON position.
Related
Power supply voltage of engine controller can be checked with monitoring function.
information
(Code: 03203)
No. Cause
Defective power supply
1
system of engine controller
PC88MR-10
Battery Voltage High Error
Failure
(Engine controller system)
Procedure, measuring location, criteria and remarks
Perform troubleshooting for failure code [CA441].
40 Troubleshooting
Troubleshooting by failure code (Display of code)
(PC88MR-CA442-400-A-Z0-A)
40-177