Komatsu PC88MR-10 Shop Manual page 878

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40 Troubleshooting

Troubleshooting of electrical system (E-mode)

Ground fault in wiring

(Contact with ground

Defective machine

Procedure, measuring location, criteria, and remarks

If no failure is found by checks on causes 3 to 5 and 7, this check is not

1. Turn starting switch to OFF position, and turn battery disconnect switch to

OFF position.

2. Disconnect fusible link F03, No. 15 and No. 17 terminals of fusebox F01,

and connectors H15, CM01, and CP01.

3. Connect T-adapters to male side of connector F03 and female side of H15

Between ground and battery (+) or F03 (male) (1)

Between ground and F03 (male) (2) or F01-16F

Between ground and F01-17, CM01 (female) (1),

(2), or H15 (female) (1)

Between ground and H15 (female) (5) or CM01

(female) (10)

If no failure is found by preceding checks, machine monitor is defective.

(Since this is an internal defect, troubleshooting cannot be performed.)

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