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Home >> GMC >> 2007 >> Acadia SLT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 632 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0035-C0050 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Saturn Outlook, 2008 GMC Acadia, and 2008 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

If any of the symptom codes 0F, 18 or 5A are set, refer to the Diagnostic Fault Information table for possible mechanical faults or conditions.

  1. Ignition OFF, disconnect the harness connector at the EBCM.
  2. Ignition ON, test for less than 1 V between the 12 V reference circuit terminal of the appropriate sensor listed below and ground.
    • Left front sensor circuit terminal 21
    • Right front sensor circuit terminal 18
    • Left rear sensor circuit terminal 33
    • Right rear sensor circuit terminal 19
    • If greater than the specified range, test the 12 V reference circuit for a short to voltage.
  3. Test for less than 1 V between the signal circuit terminal of the appropriate sensor listed below and ground.
    • Left front sensor circuit terminal 34
    • Right front sensor circuit terminal 6
    • Left rear sensor circuit terminal 20
    • Right rear sensor circuit terminal 31
    • If greater than the specified range, test the signal circuit for a short to voltage.
  4. Ignition OFF, test for infinite resistance between the 12 V reference terminal of the appropriate sensor circuit listed below and ground.
    • Left front sensor circuit terminal 21
    • Right front sensor circuit terminal 18
    • Left rear sensor circuit terminal 33
    • Right rear sensor circuit terminal 19
    • If less than the specified value, test the 12 V reference circuit for a short to ground.
  5. Test for infinite resistance between the following signal circuit terminal of the appropriate sensor circuit listed below and ground.
    • Left front sensor circuit terminal 34
    • Right front sensor circuit terminal 6
    • Left rear sensor circuit terminal 20
    • Right rear sensor circuit terminal 31
    • 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 wheel speed sensor.
  7. Test for less than 2 Ω between the appropriate 12 V reference circuit terminals listed below.
    • Left front sensor circuit terminal 21 at the EBCM harness connector, and terminal 1 at the wheel speed sensor harness connector
    • Right front sensor circuit terminal 18 at the EBCM harness connector, and terminal 1 at the wheel speed sensor harness connector
    • Left rear sensor circuit terminal 33 at the EBCM harness connector, and terminal 1 at the wheel speed sensor harness connector
    • Right rear sensor circuit terminal 19 at the EBCM harness connector, and terminal 1 at the wheel speed sensor harness connector
    • If greater than the specified range, test the 12 V reference circuit for an open or high resistance.
  8. Test for less than 2 Ω between the appropriate signal circuit terminals listed below.
    • Left front sensor circuit terminal 34 at the EBCM harness connector, and terminal 2 at the wheel speed sensor harness connector
    • Right front sensor circuit terminal 6 at the EBCM harness connector, and terminal 2 at the wheel speed sensor harness connector
    • Left rear sensor circuit terminal 20 at the EBCM harness connector, and terminal 2 at the wheel speed sensor harness connector
    • Right rear sensor circuit terminal 31 at the EBCM harness connector, and terminal 2 at the wheel speed sensor harness connector
    • If greater than the specified range, 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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