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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System With TCS & VSES >> Diagnostic Information and Procedures >> DTC C0035-C0050 >> Component Testing

Component Testing

  1. ignition OFF, disconnect the wheel speed sensor connector. Measure for 12 volts on the wheel speed sensor signal circuit.
    • If the If voltage is below 7.5 check for a short to ground, open or replace EBCM.
  2. At the wheel speed sensor, connect a 3A fused jumper wire between wheel speed sensor low reference terminal and the low reference terminal of the wheel speed harness connector. Set-up a DMM to measure current flow (mA/A). Connect the positive terminal of the DMM to the wheel speed sensor signal terminal at the wheel speed sensor harness connector and the negative lead to the wheel speed sensor signal terminal of the wheel speed sensor. Spin the wheel very slowly. Measure for 4-8 mA on the low reading and 12-16 mA on the high reading.
    • If the low amperage output of the wheel speed sensor signal circuit is below 4 mA or above 8 mA replace the wheel speed sensor.
    • If the high amperage output of the wheel speed sensor signal circuit is below 12 mA or above 16 mA replace the wheel speed sensor.
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