( SMR9EQ6E34151100000FAAT00 )

M/T Reverse Lockout System Circuit Troubleshooting

NOTE:

Refer to the How to Troubleshoot Circuits at the ECM connectors in the Fuel and Emission Systems before troubleshoot this circuit.
When you inspect whether it is possible or not the transmission shift into reverse gear during the vehicles runs forward, raise the vehicle on the 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 the transmission into reverse gear during the wheels are driven to forward.
When the vehicle on the lift, and you make the wheels drive, turn off the VSA system by the VSA OFF switch.

Driver can select the reverse gear when vehicle speed at 20 km/h (12 mph) or more

Is the fuse OK?

YES	-	Reinstall the fuse, then go to Step 3 .
NO	-	Install the new No. 3 (10 A) fuse, and recheck. If the fuse continues to blow, check for short to body ground in the wire between the No. 3 (10 A) fuse in the driver's under-dash fuse/relay box and the reverse lockout solenoid or other component.■

Is any DTC in the ECM indicated?

YES	-	Go to the indicated ECM DTC's troubleshooting. ■
NO	-	Go to Step 5 .

Measure the voltage between the reverse lockout solenoid 2P connector terminal No. 2 and body ground.

Is there battery voltage?

YES	-	Go to Step 9 .
NO	-	Repair open in the wire between the reverse lockout solenoid and the No. 3 (10 A) fuse in the driver's under-dash fuse/relay box.■

Check for continuity between the reverse lockout solenoid 2P connector terminal No. 1 and ECM connector C (49P) terminal No. 27.

Is the continuity?

YES	-	Go to Step 13 .
NO	-	Repair open in the wire between the reverse lockout solenoid and the ECM.■

Is the reverse lockout solenoid OK?

YES	-	Check for loose terminals or poor connections at ECM. If necessary, update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the trouble goes away with a known-good ECM, replace the original ECM. ■
NO	-	Repair or replace the reverse lockout solenoid. ■

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

Can you shift the transmission into the reverse?

YES	-	Go to Step 4 .
NO	-	Go to Step 3 .

Is the reverse lockout solenoid OK?

YES	-	Check the change lever assembly, if necessary inspect the internal transmission.■
NO	-	Repair or replace the reverse lockout solenoid. ■

Can you shift the transmission into the reverse?

YES	-	Intermittent failure, the system is OK at this time.■
NO	-	Go to Step 5 .

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

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 ECM. If necessary, update the ECM if it does not have the latest software, then recheck. If the trouble goes away with a known-good ECM, replace the original ECM. ■