DTC 137: VSA Pressure Sensor (Software)
- Turn the ignition switch to LOCK (0).
- Disconnect the brake pedal position switch 4P connector.
- Do the brake pedal position switch test (see
HIGH MOUNT BRAKE LIGHT REPLACEMENT
).
Is the switch OK?
YES -Go to step 4.
NO -Replace the brake pedal position switch (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT ).
- Short the SCS line with the HDS.
- Disconnect PCM connector A (44P) (see PCM REPLACEMENT ).
- Turn the ignition switch to ON (II).
- Measure the voltage between PCM connector A (44P) terminal No. 40 and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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.
- Turn the ignition switch to LOCK (0).
- Reconnect all connectors.
- Update the PCM if it does not have the latest software (see PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
- Turn the ignition switch to ON (II).
- Clear the DTCs with the HDS.
- 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.
- Check for DTCs with the HDS.
Is DTC 137 indicated?
YES -Check for loose terminals in the VSA modulator-control unit 46P connector. If it is OK, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).
NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see PCM REPLACEMENT ).