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Test T: Abs Acceleration Switch Circuit Failure

NOTE: This test is associated with DTC C1102.

  1. Code C1102

    - Disconnect acceleration sensor harness connector, located on left frame rail under vehicle, below driver's seat. Remove acceleration sensor from vehicle. Inspect harness connector and sensor connector for water or terminal corrosion. Place acceleration sensor on level surface. Measure resistance between terminals No. 1 (Orange/Black wire) and 3 (Orange/White wire) of acceleration sensor. Measure resistance between terminals No. 2 (Yellow wire) and 3 (Orange/White wire) of acceleration sensor. If resistance is less than 5 ohms for both measurements, go to next step. If resistance is 5 ohms or more for both measurements, replace acceleration sensor and go to step 11).

  2. Check Sensor Resistance

    - Raise front of sensor 1.5" (38 mm) above level surface. Measure resistance between pins No. 3 (Orange/White wire) and No. 1 (Orange/Black wire) at sensor. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, replace sensor. Go to step 11).

  3. Check Sensor Resistance

    - Raise rear of sensor 1" (25 mm) above level surface. Arrow on connector indicates front of sensor. Measure resistance between pins No. 2 (Yellow wire) and No. 3 (Orange/White wire) at sensor. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, replace sensor. Go to step 11).

  4. Check Resistance Of Orange/White Wire

    - Disconnect ABS control module connector. Install Breakout Box (014-00322) with proper overlay. Measure resistance between breakout box pin No. 32 and sensor harness connector Orange/White wire. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit in Orange/White wire between ABS control module and acceleration sensor. Go to step 11).

  5. Check For Short To Ground

    - Measure resistance between breakout box pins No. 32, and 1 or 14. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short to ground in Orange/White wire between ABS control module and acceleration sensor. Go to step 11).

  6. Check Resistance Of Orange/Black Wire

    - Measure resistance of Orange/Black wire between breakout box pin No. 30 and sensor harness connector. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit in Orange/Black wire between ABS control module and acceleration sensor. Go to step 11).

  7. Check For Short To Ground

    - Measure resistance between breakout box pins No. 30, and 1 or 14. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short to ground in Orange/Black wire between ABS control module and acceleration sensor. Go to step 11).

  8. Check Resistance Of Yellow Wire

    - Measure resistance of Yellow wire between breakout box pin No. 31 and sensor harness connector. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit in Yellow wire between ABS control module and acceleration sensor. Go to step 11).

  9. Check For Short To Ground

    - Measure resistance between breakout box pins No. 31, and 1 or 14. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short to ground in Yellow wire between ABS control module and acceleration sensor. Go to step 11).

  10. Verify All Steps Have Been Completed

    - If all previous steps have been completed, acceleration sensor has been replaced, no problems were found with wiring and connectors and a fault code still exists, replace ABS control module. Go to next step. If all previous steps have not been completed, return to last step completed and continue testing.

  11. Check For Codes

    - Disconnect breakout box and adapter and connect all components. Clear codes. Turn ignition off and back on. Retrieve code(s). If SYSTEM PASS is set, problem has been corrected. If Code C1102 is still set, return to last step completed and continue testing. If a different code is set, go to appropriate TROUBLE CODE TEST for specified code. If Code C1102 is present and short to ground in Yellow wire between ABS control module and acceleration sensor has been repaired, go to next step.
  12. If all previous steps have been completed, problem is wiring related. Go to SYMPTOM H: INTERMITTENT DIAGNOSIS PROCEDURE  under SYMPTOM TESTS. If problem still exists after performing intermittent diagnosis, go to step 10). If problem does not exist, go to step 11).
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