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Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    If DTC C2114-16, C2114-17 or U1003-88 are present, perform the diagnostics for these DTCs before continuing with this diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .

    1. Turn the ignition on.
    2. With the scan tool, read ABS DTCs and record on the repair order.
    3. With the scan tool, read and record Environmental Data (EV Data).
    4. With the scan tool, erase ABS DTCs.
    5. Cycle the ignition switch.
    6. With the scan tool, read ABS DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

  2. INSPECT RELATED WIRING HARNESS, TERMINALS, AND CONNECTORS 
    1. Turn the ignition off.
      WARNING:

      To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

      NOTE:

      Proper Steering Angle Sensor installation is crucial for proper operation.

    2. Visually inspect the related wiring harness. Look for any pinched, chafed, pierced, and partially broken wires.
    3. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, and corroded terminals.

      Were any problems found?

      Yes 

      No 

      • Go To  3
  3. (G4) DYNAMICS SENSOR SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE 
    1. Disconnect the ABS Module harness connector.
    2. Disconnect the Dynamics Sensor harness connector.
    3. Measure the resistance of the (G4) Dynamics Sensor Supply circuit between the Dynamics Sensor harness connector and the Anti-lock Brake System (ABS) Module harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (G4) Dynamics Sensor Supply circuit for an open.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .
  4. (G94) GROUND CIRCUIT OPEN OR HIGH RESISTANCE 
    1. Using a 12-volt test light connected to B+, check the (G94) Ground circuit at the Dynamics Sensor harness connector.
      NOTE:

      The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly?

      Yes 

      • Go To  5

      No 

      • Repair the (G94) Ground circuit for an open or high resistance.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .
  5. CHECK THE (D465) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition on.
    2. Measure the voltage of the (D465) Dynamics Sensor High Data Link circuit.

      Is there any voltage present?

      Yes 

      • Repair the (D465) Dynamics Sensor High Data Link circuit for a short to voltage.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

      No 

      • Go To  6
  6. CHECK THE (D465) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Measure the resistance of the (D465) Dynamics Sensor High Data Link circuit between ground and the Dynamics Sensor harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Repair the (D465) Dynamics Sensor High Data Link circuit for a short to ground.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

      No 

      • Go To  7
  7. CHECK THE (D465) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (D465) Dynamics Sensor High Data Link circuit between the Dynamics Sensor harness connector and the Anti-lock Brake System (ABS) Module harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  8

      No 

      • Repair the (D465) Dynamics Sensor High Data Link circuit for an open.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .
  8. CHECK THE (D464) DYNAMICS SENSOR LOW DATA LINK CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition on.
    2. Measure the voltage of the (D464) Dynamics Sensor Low Data Link circuit.

      Is there any voltage present?

      Yes 

      • Repair the (D464) Dynamics Sensor Low Data Link circuit for a short to voltage.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

      No 

      • Go To  9
  9. CHECK THE (D464) DYNAMICS SENSOR LOW DATA LINK CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Measure the resistance of the (D464) Dynamics Sensor Low Data Link circuit between ground and the Dynamics Sensor harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Repair the (D464) Dynamics Sensor Low Data Link circuit for a short to ground.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

      No 

      • Go To  10
  10. CHECK THE (D464) DYNAMICS SENSOR LOW DATA LINK CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (D464) Dynamics Sensor Low Data Link circuit between the Dynamics Sensor harness connector and the ABS Module harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  11

      No 

      • Repair the (D464) Dynamics Sensor Low Data Link circuit for an open.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .
  11. (D465) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT SHORTED TO THE (D464) DYNAMICS SENSOR LOW DATA LINK CIRCUIT 
    1. Turn the ignition off.
    2. Measure the resistance between the (D465) Dynamics Sensor High Data Link circuit and the (D464) Dynamics Sensor Low Data Link circuit at the ABS Module harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Repair the (D464) Dynamics Sensor Low Data Link circuit for a short to (D465) Dynamics Sensor High Data Link circuit.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

      No 

      • Go To  12
  12. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE 
    1. Replace the Dynamics Sensor in accordance with the Service Information. Refer to SENSOR, DYNAMICS, REMOVAL . Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .
    2. Turn the ignition on.
    3. With the scan tool, read ABS DTCs and record on the repair order.
    4. Cycle the ignition switch from off to on.
    5. With the scan tool, read DTCs.

      Does the DTC remain active?

      Yes 

      No 

      • Test complete.
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