Failure Code [B@Bazk] Engine Oil Level Low - Komatsu PC200-8M0 Shop Manual

301 Troubleshooting by failure code, Part 1

Failure code [B@BAZK] Engine Oil Level Low

Failure code [B@BAZK] Engine Oil Level Low

Action
Failure code
level
L01 B@BAZK
q
While engine is running, signal voltage from engine oil level switch does not remain below 1 V, so
Detail of failure
machine monitor determines that engine oil level is low (oil level switch is open).
Action of con-
q
Displays engine oil level monitor yellow on machine monitor.
troller
Problem on
q
If machine is operated as it is, engine may seize up.
machine
q
Input (ON/OFF) from engine oil level switch can be checked with monitoring function.
Related infor-
(Code: 04501 Monitor input 2)
mation
q
Method of reproducing failure code: Start engine
Cause
Engine oil level low
1
(when system works properly)
Defective engine oil level switch
2
(internal defect)
Open circuit in wiring harness
3 (wire breakage or defective con-
tact of connector)
4 Defective machine monitor
Circuit diagram related to engine oil level switch
PC200, 200LC, 220, 220LC-8M0
Engine Oil Level Low
Failure
(Machine monitor system)
Procedure, measuring location, criteria and remarks
Check engine oil level. If it is low, remove cause.
1. Turn starting switch to OFF position.
2. Disconnect connector P44.
3. Turn starting switch to ON position.
Between P44 (male) (1) and ground
1. Turn starting switch to OFF position.
2. Disconnect connectors CM02 and P44, and connect T-adapters to each
female side.
Between CM02 (female) (2) and P44 (female) (1)
If no failure is found by above checks, machine monitor is defective.
q
Reference
1. Turn starting switch to OFF position.
2. Insert T-adapters into connectors CM01 and CM02.
3. Turn starting switch to ON position.
Between CM02 (2) and CM01 (3)
SEN06133-00
Max. 1 z
Resistance
Max. 1 z
Resistance
Voltage Min. 10 V
13
40-301