Driver Cannot Select Reverse Gear When Vehicle Speed Is 9 Mph (15 Km/H) Or Less

Symptom Troubleshooting: Driver cannot select reverse gear when vehicle speed is 9 mph (15 km/h) or less

Driver cannot select reverse gear when vehicle speed is 9 mph (15 km/h) or less

NOTE:

- 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.

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

2. 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.


3. Do the reverse lockout solenoid test. Testing and Inspection

Is the reverse lockout solenoid OK?
YES - Check the change lever assembly, M/T Change Lever Assembly Disassembly/Reassembly if necessary inspect the internal transmission.

NO - Repair or replace the reverse lockout solenoid. Service and Repair


4. Start the engine, and try to shift the transmission into reverse.

Can you shift the transmission into the reverse?
YES - Intermittent failure, the system is OK at this time.

NO - Go to step 5.


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

6. Jump the SCS line with the HDS.

7. Disconnect ECM connector A (44P).

8. Disconnect the reverse lockout solenoid 2P connector.

9. Check for continuity between reverse lockout solenoid 2P connector terminal No. 1 and body ground.

Is there continuity?
YES - Repair 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, ECM Update or substitute a known-good ECM, Initial Inspection and Diagnostic Overview then recheck. If the symptom goes away with a known-good ECM, replace the original ECM. Service and Repair