Jeep KJ Liberty 2005 Service Manual page 13

ABM INTERNAL —
TEST
3 Turn the ignition off.
Disconnect the ABM harness connector.
Turn the ignition on.
Measure the voltage of the Fused Run Relay Output circuit.
Is the voltage above 10 volts?
Yes → Go To 4
No
4 Turn the ignition off.
Disconnect the ABM harness connector.
Measure the voltage of the ABS Valve Fused B(+) circuit.
Is the voltage above 10 volts?
Yes → Go To 5
No
5 Turn the ignition off.
Disconnect the ABM harness connector.
Measure the voltage of the ABS Pump Fused B(+) circuit.
Is the voltage above 10 volts?
Yes → Go To 6
No
6 Turn the ignition off.
Disconnect the ABM harness connector.
Measure the resistance of the ground circuits.
Is the resistance below 5.0 ohms?
Yes → Replace the Anti-Lock Brake Module in accordance with the
No
7 Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?
Yes → Repair as necessary.
No
Continued
ACTION
→ Repair the Fused Run Relay Output circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
→ Repair the ABS Valve Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
→ Repair the ABS Pump Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
→ Repair the ground circuit(s) for an open.
Perform ABS VERIFICATION TEST - VER 1.
Perform ABS VERIFICATION TEST - VER 1.
→ Test Complete.
11
BRAKES (25E)
APPLICABILITY
All
All
All
All
All