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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1061 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0035 or C0040 (With JL4 VSES) >> Component Testing
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Component Testing

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the suspect wheel speed sensor.
  2. Ignition On, test at the harness connector for 10-12 volts between the signal circuit terminal, and low reference circuit terminal.
    • If not within the specified range, perform the Circuit/System Testing procedure.
  3. Connect a jumper wire between the signal circuit terminal on the harness side, and to the wheel speed sensor signal circuit terminal on the WSS.
  4. Connect a DMM between the low reference terminal at the WSS, and to the low reference terminal on the harness connector. Set up the DMM to measure mA using the DC scale.
  5. Spin the wheel very slowly. Using the DMM MIN/MAX feature, test for 4-8 mA on the MIN capture, and 12-16 mA on the MAX capture. The sensor mA readings should toggle from high to low with in the specified range.
    • If not within the specified range, replace the wheel speed sensor.
  6. If all sensor circuits test normal, perform the Circuit/System Testing procedure.
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