Komatsu WA900-3E0 Shop Manual page 120

No. Cause
Ground fault in wiring harness
6 (wire breakage or defective con-
tact of connector)
WA900-3E0
E-4 Parking brake is applied while machine is traveling.
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Disconnect L01, L59, L58, F11, BC8, BC9, BC10, BC11, FS2, PL01, and
PL12, and then perform troubleshooting.
Between F11 (female) (2) and ground (F10)
Between F11 (female) (1) and BC08 (female) (1)
Between BC08 (female) (2) and BC09 (female) (1)
Between BC09 (female) (2) and BC10 (female) (1)
Between BC10 (female) (2) and BC11 (female) (1)
Between BC11 (female) (2) and L01 (female) (C)
Between L01 (female) (B) and each of L59
Resistance
(female) (1) and (3)
Between L59 (female) (5) and each of L01 (A) and
FS2 (7)
Between L59 (female) (2) and ground (R10)
Between PL01 (female) (C) and PL12 (female) (3)
Between PL12 (female) (6) and L01 (male) (C)
Between PL01 (female) (A) and L01 (male) (A)
Between PL01 (female) (B) and L01 (male) (B)
Troubleshooting of electrical system (E-mode),
Max. 1 z
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