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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1209 (Anti-Lock Brake System - Non-Hybrid Greater Than/Equal To 3900 Kg (8600 Lb) GVW With TCS & VES) >> Diagnostic Information and Procedures >> DTC C0035-C0050 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Yukon XL and 2008 Chevrolet Suburban. 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 12-volt reference circuit terminal of the appropriate sensor listed below and ground:
    • LF Sensor circuit terminal 28
    • RF Sensor circuit terminal 17
    • LR Sensor circuit terminal 4
    • RR Sensor circuit terminal 3
    • If greater than the specified value, test the 12-volt reference 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 29
    • RF Sensor circuit terminal 6
    • LR Sensor circuit terminal 5
    • RR Sensor circuit terminal 2
    • If greater than the specified value, test the signal circuit for a short to voltage.
  4. Ignition OFF, test for infinite resistance between the 12-volt reference terminal of the appropriate sensor listed below and ground:
    • LF Sensor circuit terminal 28
    • RF Sensor circuit terminal 17
    • LR Sensor circuit terminal 4
    • RR Sensor circuit terminal 3
    • If less than the specified value, test the 12-volt reference circuit for a short to ground.
  5. Test for infinite resistance between the following signal circuit terminal of the appropriate sensor listed below and ground:
    • LF Sensor circuit terminal 29
    • RF Sensor circuit terminal 6
    • LR Sensor circuit terminal 5
    • RR Sensor circuit terminal 2
    • 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. Test for less than 2 ohms between the appropriate 12-volt reference circuit terminals listed below:
    • LF Sensor circuit terminals 28 at the EBCM harness connector, and terminal A at the WSS harness connector
    • RF Sensor circuit terminals 17 at the EBCM harness connector, and terminal A at the WSS harness connector
    • LR Sensor circuit terminals 4 at the EBCM harness connector, and terminal A at the WSS harness connector
    • RR Sensor circuit terminals 3 at the EBCM harness connector, and terminal A at the WSS harness connector
    • If greater than the specified value, test the 12-volt reference 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 terminals 29 at the EBCM harness connector, and terminal B at the WSS harness connector
    • RF Sensor circuit terminals 6 at the EBCM harness connector, and terminal B at the WSS harness connector
    • LR Sensor circuit terminals 5 at the EBCM harness connector, and terminal B at the WSS harness connector
    • RR Sensor circuit terminals 2 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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