Manufacturer Code Charts: 137

VSA DTC Troubleshooting: 137

DTC 137:

Pressure Sensor Offset Malfunction

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch to ON (II).

2. Disconnect the brake pedal position switch 4P connector.

3. Do the brake pedal position switch test Testing and Inspection.

Is the switch OK?

YES -

Go to step 4.

NO -

Replace the brake pedal position switch Adjustments.�

4. Short the SCS line with the HDS.

5. Disconnect the PCM connector A (49P).

6. Turn the ignition switch to ON (II).

7. Measure the voltage between PCM connector A (49P) terminal No. 8 and body ground.





Is there 0.1 V or more when the brake pedal is released?

YES -

Repair a short to power in the wire between the brake pedal position switch and the PCM.�

NO -

Go to step 8.

8. Turn the ignition switch to LOCK (0).

9. Reconnect all connectors.

10. Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.

11. Turn the ignition switch to ON (II).

12. Clear the DTC with the HDS.

13. Test-drive the vehicle at 8 mph (12 km/h) for 60 seconds or more.

NOTE: Drive the vehicle on the road, not on a lift.

14. Check for DTCs with the HDS.

Is DTC 137 indicated?

YES -

Check for loose terminals in the PCM connector A (49P). If the PCM was updated, substitute a known-good PCM, then retest. If the PCM was substituted, go to step 15.

NO -

If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair.�

15. Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection. If the unit already has the latest software, substitute a known-good VSA modulator-control unit Service and Repair.

16. Test-drive the vehicle. Drive the vehicle at 8 mph (12 km/h) for 60 seconds or more. around a number of corners.

NOTE: Drive the vehicle on the road, not on a lift.

17. Check for DTCs with the HDS.

Is DTC 137 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. Check for a loose connection at G303. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.

NO -

If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit Service and Repair. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.