Komatsu PC200-8M0 Shop Manual page 840

SEN06138-00
Cause
Ground fault in wiring harness
7
(contact with ground circuit)
8 Defective machine monitor
18
40-400
E-3 When starting switch is turned to ON position, machine monitor displays nothing
Procedure, measuring location, criteria and remarks
If check result on cause 4 is normal, this check is not required.
1. Turn starting switch to OFF position and disconnect ground cable.
2. Disconnect fusible link F05, No. 17 of fuse F01, terminal 20E, and connec-
tors H15, CM01, and C01.
3. Connect T-adapters to male side of connector F05 and female side of H15
and CM01.
Between battery (+) or F05 (male) (1) and ground
Between F05 (male) (2) and ground, or between
F01-16E and ground
Between F01-17 and ground, or between CM01
(female) (1), (2) and ground, or between H15
(female) (1) and ground
Between H15 (female) (5) and ground, or between
CM01 (female) (14) and ground
If no failure is found by above checks, machine monitor is defective. (Since
this is an internal defect, troubleshooting cannot be performed.)
400 Troubleshooting of electrical system (E-mode)
Resistance Min. 1 Mz
Resistance Min. 1 Mz
Resistance Min. 1 Mz
Resistance Min. 1 Mz
PC200, 200LC, 220, 220LC-8M0