08-05-25-004A: Antilock Brake System (ABS), Traction Control System (TCS) or StabiliTrak Light On, DTCs C0035-C0052 Set (Perform Diagnostic Component Test Procedure and Repair as Necessary) - (Oct 27, 2008)
Subject: Antilock Brake System (ABS), Traction Control System (TCS) or StabiliTrak® Light On, DTCs C0035-C0052 Set (Perform Diagnostic Component Test Procedure and Repair as Necessary)
Models: 2007-2008 Chevrolet Corvette
Condition
Some customers may comment that the Antilock Brake System (ABS), Traction Control System (TCS) or StabiliTrak® (if equipped) warning lights are illuminated. Upon investigation, one or more of the following DTCs may be in history or current.
DTC
Location
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Sensor Circuit Range/Performance
C0037
Left Front Wheel Speed Sensor Circuit Low
C0040
Right Front Wheel Speed Sensor Circuit
C0041
Right Front Wheel Speed Sensor Circuit Range/Performance
C0042
Right Front Wheel Speed Sensor Circuit Low
C0045
Left Rear Wheel Speed Sensor Circuit
C0046
Left Rear Wheel Speed Sensor Circuit Range/Performance
C0047
Left Rear Wheel Speed Sensor Circuit Low
C0050
Right Rear Wheel Speed Sensor Circuit
C0051
Right Rear Wheel Speed Sensor Circuit Range/Performance
C0052
Right Rear Wheel Speed Sensor Circuit Low
Correction
Do This
Don't Do This
Properly diagnose the wheel speed sensor.
Do not replace the EBCM or any other component(s) without first diagnosing.
Begin diagnostics with the component test procedure listed below. If the cause is not found, proceed to the Circuit/System Testing on the applicable Diagnostic Information and Procedures document for the vehicle you are working on. SI Diagnostic Information and Procedures are being revised to reflect this change in strategy.
With the ignition OFF, disconnect the harness connector at the appropriate wheel speed sensor.
Test for 850-1350 ohms between the signal terminal A and the low reference signal terminal B. During the test, check for an intermittent circuit condition by gently moving the wheel speed sensor pigtail harness.
If not within the specified range, replace the wheel speed sensor.
Test for infinite resistance between each terminal and the steering knuckle. Reverse the test leads, test for infinite resistance between each terminal and the steering knuckle again.
If less than the specified value, replace the appropriate wheel speed sensor.
Spin the wheel while monitoring the voltage between the signal terminal A and the low reference terminal B. The voltage should be greater than 100 mV AC.
If less than the specified range, replace the wheel speed sensor.
