FixVault
Home › Mazda › 1996 › B3000 Base, Automatic › Repair and Diagnosis › Brakes › Traction Control › Anti-Lock Brake System - Four Wheel › Circuit Tests › Test T: Acceleration Sensor Failure

Test T: Acceleration Sensor Failure

  1. DTC 1102

    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 lever 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 more than 5 ohms for both measurements, replace sensor and go to step 11).

  2. Check Sensor Resistance

    Raise front of sensor 1.5" (38 mm) above level surface. Measure resistance between terminals No. 1 (Orange/Black wire) and 3 (Orange/White wire) of acceleration sensor. If resistance is more than 5 ohms, go to next step. If resistance is less than 5 ohms, replace sensor and 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 terminals No. 2 (Yellow wire) and 3 (Orange/White wire) of acceleration sensor. If resistance is more than 5 ohms, sensor is okay, go to next step. If resistance is less than 5 ohms, replace sensor and go to step 11).

  4. Check Orange/White Wire Circuit Resistance

    Disconnect control module connector. Install Breakout Box (49-UN01-058) with proper overlay. Measure resistance between breakout box pin No. 32 and terminal No. 3 (Orange/White wire) of acceleration sensor harness connector. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Orange/White wire between control module and acceleration sensor. Go to step 11).

  5. Check Orange/White Wire Circuit 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 less than 5 ohms, repair short to ground in Orange/White wire between control module and acceleration sensor. Go to step 11).

  6. Check Orange/Black Wire Circuit Resistance

    Measure resistance between breakout box pin No. 30 and terminal No. 1 (Orange/Black wire) of acceleration sensor harness connector. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Orange/Black wire between control module and acceleration sensor. Go to step 11).

  7. Check Orange/Black Wire Circuit Short To Ground

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

  8. Check Yellow Wire Circuit Resistance

    Measure resistance between breakout box pin No. 31 and terminal No. 2 (Yellow wire) of acceleration sensor harness connector. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Yellow wire between control module and acceleration sensor. Go to step 11).

  9. Check Yellow Wire Circuit Short To Ground

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

  10. Check If 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 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 DTCs

    Disconnect breakout box and adapter. Reconnect all components. Clear codes. Turn ignition off, then on. Retrieve codes. If SYSTEM PASS is set, condition has been repaired and test is complete. If DTC 1102 is still set, return to last test step completed, and continue testing. If a code other than DTC 1102 is set, perform appropriate circuit test. If DTC 1102 is set and step 9) has been completed, go to next step.

  12. Verify Wiring Integrity

    If all previous steps have been completed, cause of condition may be wiring related. See INTERMITTENT DIAGNOSIS PROCEDURE  . Repair wiring as necessary and go to step 10). If condition has been repaired, go to step 11) for verification of repair.
About FixVault