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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Antilock Brake System) >> Diagnostic Information and Procedures >> DTC C0035-C0050 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the EBCM.
  2. Ignition ON, test for less than 1 volt between the ignition voltage circuit terminal of the appropriate sensor listed below and ground.
    • LF Sensor circuit terminal 46
    • RF Sensor circuit terminal 34
    • LR Sensor circuit terminal 36
    • RR Sensor circuit terminal 43
    • If greater than the specified range, test the ignition voltage circuit for a short to voltage.
  3. Test for less than 1 volt between the signal circuit terminal of the appropriate sensor listed below and ground.
    • LF Sensor circuit terminal 45
    • RF Sensor circuit terminal 33
    • LR Sensor circuit terminal 37
    • RR Sensor circuit terminal 42
    • If greater than the specified range, test the signal circuit for a short to voltage.
  4. Ignition OFF, test for infinite resistance between the ignition voltage terminal of the appropriate sensor listed below and ground.
    • LF Sensor circuit terminal 46
    • RF Sensor circuit terminal 34
    • LR Sensor circuit terminal 36
    • RR Sensor circuit terminal 43
    • If less than the specified value, test the ignition voltage circuit for a short to ground.
  5. Ignition OFF, test for infinite resistance between the following signal circuit terminal of the appropriate sensor listed below and ground.
    • LF Sensor circuit terminal 45
    • RF Sensor circuit terminal 33
    • LR Sensor circuit terminal 37
    • RR Sensor circuit terminal 42
    • If less than the specified value, test the signal circuit for a short to ground.
  6. Ignition OFF, disconnect the harness connector at the appropriate WSS.
  7. Ignition OFF, test for less than 2 ohms between the appropriate ignition voltage circuit terminals listed below.
    • LF Sensor circuit terminal 46 at the EBCM harness connector and terminal A at the WSS harness connector.
    • RF Sensor circuit terminal 34 at the EBCM harness connector and terminal A at the WSS harness connector.
    • LR Sensor circuit terminal 36 at the EBCM harness connector and terminal A at the WSS harness connector.
    • RR Sensor circuit terminal 43 at the EBCM harness connector and terminal A at the WSS harness connector.
    • If greater than the specified value, test the ignition voltage circuit for an open or high resistance.
  8. Test for less than 2 ohms between the appropriate signal circuit terminals listed below.
    • LF Sensor circuit terminal 45 at the EBCM harness connector and terminal B at the WSS harness connector.
    • RF Sensor circuit terminal 33 at the EBCM harness connector and terminal B at the WSS harness connector.
    • LR Sensor circuit terminal 37 at the EBCM harness connector and terminal B at the WSS harness connector.
    • RR Sensor circuit terminal 42 at the EBCM harness connector and terminal B at the WSS harness connector.
    • If greater than the specified value, test the signal circuit for an open or high resistance.
  9. If all circuits test normal, replace the appropriate wheel speed sensor. If the DTC resets replace the EBCM.
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