C1032 Right Rear Wheel Speed Sensor Signal Erratic Performance
November 03, 2017
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C1032 code - When the Right Rear Wheel Speed Sensor (WSS) signal is intermittently missing while vehicle speed is above 25 mph (40 km/h) or erratic wheel speed signal during acceleration or sensed wheel speed is different from other wheel.
Possible Causes
- Right rear WSS loose circuit/connector/terminal damage.
- Right rear tone wheel damage.
- Right rear wheel/bearing damage.
- Improper Right rear tire pressure/mismatched tires.
- Right rear WSS.
- Antilock Brake System (ABS) Module.
Diagnose DTC C1032 Right Rear Wheel Speed Sensor Signal Erratic Performance
Step 1. Check for DTC C1032 Code
Step 4. Check axle shaft fastener hardware for looseness
Inspect the axle shaft fastener for looseness, and not properly fastened. Tighten fastener to proper specification as required.
Was the axle shaft fastener loose?
YES, repair as necessary.
NO, go to step 5.
This DTC must be active for the results of this test to be valid. Turn the ignition on, with the scan tool erase DTC.
Caution: Make sure braking capability is available before road testing.
Road test the vehicle over 25 mph (40 km/h).
Vehicle must be driven above 25 mph (40 km/h) for set conditions to be met.
With the scan tool, read DTC.
Does the scan tool display DTC C1032 Right Rear Wheel Speed Sensor Signal Erratic Performance?
YES, go to step 3.
NO, go to step 2.
Step 2. Check wheel speed sensor signals
Turn the ignition on, with the scan tool, monitor and graph all the WSS speeds and compare graph while an assistant drives the vehicle.
If graph shows periodic dropouts pay close attention to the tone wheel.
Slowly accelerate as staright as possible from a stop to 25 mph (40 km/h)
Is the Right rear WSS speed showing 0 mph (0 km/h) or not matching other wheels or showing erratic behavior?
YES, go to step 3.
NO, perform the ABS Intermittent condition.
Step 3. Check for improper Right rear tire pressure/mismatched tires
Turn the ignition off, check and adjust the right rear tire pressure. Check and adjust all other tire pressures, inspect for mismatched tires on vehicle.
Is the right rear tire improperly inflated or mismatched tires on vehicle?
YES, repair as necessary.
NO, go to step 4.
Step 4. Check axle shaft fastener hardware for looseness
Inspect the axle shaft fastener for looseness, and not properly fastened. Tighten fastener to proper specification as required.
Was the axle shaft fastener loose?
YES, repair as necessary.
NO, go to step 5.
Step 5. Check right rear WSS looseness, inspect circuits/terminals for damage
Check all terminals for broken, bent, pushed out, or corroded terminals.
Inspect the Antilock Brake System module harness connector, right rear WSS , and right rear WSS harness connector. Inspect the right rear WSS for looseness, excessive corrosion and not properly fastened. Inspect the right rear WSS signal and right rear WSS supply circuits between the right rear WSS and Antilock Brake System Module for damage.
Is the right rear WSS loose or any of the wiring/connectors/terminals damaged?
YES, repair as necessary.
NO, go to step 6.
Step 6. Check right rear wheel speed sensor for damage
Remove the right rear wheel speed sensor, inspect the right rear wheel speed sensor face for damage.
Is the right rear WSS damaged?
YES, replace sensor and hub assembly.
NO, go to step 7.
Step 7. Check right rear tone wheel/bearing for damage
Inspect the right rear tone wheel/bearing for damage, missing teeth, cracks, corrosion or looseness.
The tone wheel teeth should be perfectly square, not bent, or nicked.
Is the right rear tone wheel/bearing damaged?
YES, repair as necessary.
NO, go to step 8.
Step 8. Check right rear wheel bearing for damage
Inspect the right rear wheel bearing for excessive runout or clearance.
Refer to the appropriate service information, if necessary, for procedures or specifications
Is the right rear wheel bearing damaged?
YES, repair as necessary.
NO, go to step 9.
Step 9. Right rear wheel speed sensor
Replace the right rear wheel speed sensor. Road test the vehicle over 25 mph (40 km/h).
Vehicle must be driven above 25 mph (40 km/h) for set conditions to be met.
With the scan tool, read ABS DTC.
Did DTC C1027 Code reset?
YES, replace the Antilock Brake System (ABS) Module. Perform the ABS Verification Test.
NO, test complete for DTC C1032 Right Rear Wheel Speed Sensor Signal Erratic Performance.
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