Driver cannot select reverse gear when vehicle speed is 9 mph (15 km/h) or less
- When checking if the transmission will shift to reverse while the wheels are being driven forward, raise the vehicle on a lift, make sure it is securely supported, and allow the front wheels to rotate freely.
- Do not release the clutch pedal if you can select reverse gear while the wheels are driven forward.
- When the vehicle is on a lift, and you make the wheels rotate, turn off the VSA system by the VSA OFF switch.
- Refer to How to Troubleshoot Circuits at the ECM Connectors in the Fuel and Emissions Systems Information before troubleshooting this circuit (see HOW TO TROUBLESHOOT CIRCUITS AT THE ECM/PCM CONNECTORS ).
- Press the engine start/stop button to select the OFF mode.
- Try to shift the transmission into reverse.
Can you shift the transmission into the reverse?
YES - Go to step 4.
NO - Go to step 3.
- Do the reverse lockout solenoid test (see REVERSE LOCKOUT SOLENOID TEST
).
Is the reverse lockout solenoid OK?
YES - Check the reverse idler gear shaft assembly (see REVERSE IDLER GEAR SHAFT ASSEMBLY DISASSEMBLY/REASSEMBLY ), or inspect the internal transmission.
NO - Repair or replace the reverse lockout solenoid (see REVERSE LOCKOUT SOLENOID DISASSEMBLY/REASSEMBLY ).
- Start the engine.
Can you shift the transmission into the reverse?
YES - Intermittent failure, the system is OK at this time.
NO - Go to step 5.
- Press the engine start/stop button to select the OFF mode.
- Jump the SCS line with the HDS.
- Disconnect ECM connector A (49P).
- Disconnect the reverse lockout solenoid 2P connector.
- Check for continuity between body ground and reverse lockout solenoid 2P connector terminal No. 1.Fig 1: Checking Continuity Between Body Ground And Reverse Lockout Solenoid 2P Connector Terminal No. 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Repair a short to body ground in the wire between the reverse lockout solenoid and the ECM.
NO - Check for loose terminals or poor connections at the ECM. If necessary, update the ECM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good ECM (see SUBSTITUTING THE ECM/PCM ), then recheck. If the symptom goes away with a known-good ECM, replace the original ECM (see ECM/PCM REPLACEMENT ).