TEST ACTION APPLICABILITY
7 Turn the ignition off.
Reconnect the CAB harness connector.
Using a 12-volt test light connected to 12-volts, probe the ABS Pump Fused B(+)
circuit fuse terminal.
Does the test light illuminate?
All
Yes → Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No → Replace theABS Pump fuse. If the fuse is open make sure to check
for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
8 Turn the ignition off.
Disconnect the CAB harness connector.
Inspect the CAB and CAB harness connector for damage.
Is there any broken, bent, pushed out, corroded, or spread terminals?
All
Yes → Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No → Go To 9
9 Turn the ignition off.
Reinstall the ABS Pump fuse.
Disconnect the ABS Pump Motor connector.
Check connectors - Clean/repair as necessary.
Connect a 10 gauge 40 amp fused jumper wire between the ABS Pump Fused B(+)
terminal in the CABharness connector totheABS Pump Motor connectorRED wired
terminal.
Connect a 10 gauge jumper wire between the Ground circuit terminal in the CAB
harness connector to the ABS Pump Motor connector BLACK wired terminal.
Did the ABS Pump Motor operate?
All
Yes → Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No → Go To 10
10 Turn the ignition off.
Disconnect the ABS Pump Motor connector.
Check connectors - Clean/repair as necessary.
Connect a 10 gauge 40 amp fused jumper wire between the ABS Pump Motor
connector RED wired terminal and an alternate 40 amp capable B(+) source.
Connect a 10 gauge jumper wire between the ABS Pump Motor connector BLACK
wired terminal and ground
Did the ABS Pump Motor operate?
All
Yes → Go To 11
No → Replace the Hydraulic Control Unit in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
26
BRAKES (CAB)
PUMP CIRCUIT FAILURE — Continued
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