Manufacturer Code Charts: 137

VSA DTC Troubleshooting: 137

DTC 137:

VSA Pressure Sensor (Software)

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

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 PCM connector A (44P) Service and Repair.

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

7. Measure the voltage between PCM connector A (44P) terminal No. 40 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 Initial Inspection and Diagnostic Overview.

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

12. Clear the DTCs with the HDS.

13. Test-drive the vehicle at 7 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 VSA modulator-control unit 46P connector. If necessary, substitute a known-good VSA modulator-control unit Service and Repair, then recheck. If the VSA modulator-control unit was substituted, go to step 1.

NO -

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