Diagnostic Test
- VERIFY THE DTC IS ACTIVE NOTE:
This DTC must be active for the results of this test to be valid.
- Turn the ignition on.
- With the scan tool, record and erase DTCs.
- Cycle the ignition switch from off to on.
- With the scan tool, read DTCs.
Is the DTC active at this time?
Yes
- Go To 2
No
- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Refer to the ABS-INTERMITTENT CONDITION TEST. Refer to STANDARD PROCEDURE .
- CHECK HARNESS CONNECTOR/TERMINAL FOR DAMAGE NOTE:
Check all terminals for broken, bent, pushed out, or corroded terminals.
- Turn the ignition off.
- Inspect the ABS Module harness connector, Left Rear WSS, and Left Rear WSS harness connector.
Is the Left Rear WSS or any of the connectors/terminals damaged?
Yes
- Repair as necessary.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 3
- CHECK THE (B4) LEFT REAR WSS SUPPLY CIRCUIT FOR VOLTAGE
- CHECK THE (B4) LEFT REAR WSS SUPPLY CIRCUIT FOR A SHORT TO GROUND
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- Turn the ignition off.
- Disconnect the ABS Module harness connector.
- Using a 12-volt test light connected to 12-volts, probe the (B4) Left Rear WSS Supply circuit.
Does the test light illuminate brightly?
Yes
- Repair the (B4) Left Rear WSS Supply circuit for a short to ground.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 5
- CHECK THE (B4) LEFT REAR WSS SUPPLY CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
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- Connect a jumper wire between ground and the (B4) Left Rear WSS Supply circuit in the ABS Module harness connector.
- Using a 12-volt test light connected to 12-volts, probe the (B4) Left Rear WSS Supply circuit.
Does the test light illuminate brightly?
Yes
- Go To 6
No
- Repair the (B4) Left Rear WSS Supply circuit for an open or high resistance.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- CHECK THE (B3) LEFT REAR WSS SIGNAL CIRCUIT AND (B4) LEFT REAR WSS SUPPLY CIRCUIT SHORTED TOGETHER
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- Remove all jumper wires.
- Measure the resistance between the (B3) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit.
Is the resistance above 5.0 ohms?
Yes
- Replace the Anti-Lock Brake System (ABS) Module in accordance with the Service Information. Refer to STANDARD PROCEDURE .
- Perform ABS VERIFICATION TEST. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
No
- Repair the (B3) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit for a short together.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- CHECK THE (B3) LEFT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
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- Turn the ignition off.
- Disconnect the ABS Module harness connector.
- Turn the ignition on.
- Measure the voltage between the (B3) Left Rear WSS Signal circuit and ground.
Is the voltage above one volt?
Yes
- Repair the (B3) Left Rear WSS Signal circuit for a short to voltage.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 8
- CHECK THE (B3) LEFT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO GROUND
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- Turn the ignition off.
- Using a 12-volt test light connected to 12-volts, probe the (B3) Left Rear WSS Signal circuit.
Does the test light illuminate brightly?
Yes
- Repair the (B3) Left Rear WSS Signal circuit for a short to ground.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 9
- CHECK THE (B3) LEFT REAR WSS SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
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- Connect a jumper wire between ground and the (B3) Left Rear WSS Signal circuit in the ABS Module harness connector.
- Using a 12-volt test light connected to 12-volts, probe the (B3) Left Rear WSS Signal circuit.
Does the test light illuminate brightly?
Yes
- Go To 10
No
- Repair the (B3) Left Rear WSS Signal circuit for an open or high resistance.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- CHECK THE (B3) LEFT REAR WSS SIGNAL CIRCUIT AND (B4) LEFT REAR WSS SUPPLY CIRCUIT SHORTED TOGETHER
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- Remove all jumper wires.
- Measure the resistance between the (B3) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit.
Is the resistance above 5.0 ohms?
Yes
- Go To 11
No
- Repair the (B3) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit for a short together.
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- LEFT REAR WHEEL SPEED SENSOR
- Replace the Left Rear Wheel Speed Sensor in accordance with the Service Information. Refer to SENSOR, WHEEL SPEED, REAR, REMOVAL .
- Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .WARNING:
To avoid possible serious or fatal injury, check brake capability is available before road testing.
- Road test the vehicle over 40 km/h (25 mph).NOTE:
Vehicle must be driven above 40 km/h (25 mph) for set conditions to be met.
- With the scan tool, read ABS DTCs.
Does the DTC remain active?
Yes
- Replace the Anti-Lock Brake System (ABS) Module in accordance with the Service Information. Refer to STANDARD PROCEDURE .
- Perform ABS VERIFICATION TEST. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
No
- Test Complete.