TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Replace fuse #27 in the junction block.
Disconnect the CAB C1 harness connector.
Turn the ignition on.
Remove and inspect fuse #27 in the junction block.
Is the fuse open?
All
Yes
→
Go To
5
No
→
Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the CAB C1 harness connector.
Disconnect the Junction Block C2 harness connector.
Measure the resistance between ground and the Fused Ignition Switch Output
circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the Fused Ignition Switch Output circuit for a short to
ground.
Perform ABS VERIFICATION TEST - VER 1.
No
→
Replace the Junction Block.
Perform ABS VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the CAB C1 harness connector.
Measure the resistance between ground and each ground circuit.
Is the resistance below 5.0 ohms for each measurement?
All
Yes
→
Go To
7
No
→
Repair the ground circuit(s) for an open.
Perform ABS VERIFICATION TEST - VER 1.
7
Turn the ignition off.
NOTE: Ensure fuse #27 is installed in the junction block.
Disconnect the CAB C1 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output circuit.
Is the test light illuminated?
All
Yes
→
Go To
8
No
→
Repair the Fused Ignition Switch Output circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
137
COMMUNICATION
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE —
Continued