Reverse Lockout System 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:
Do not release the clutch pedal if you can select reverse gear while the wheels are driven forward.
Refer to How to Troubleshoot Circuits at the PCM connectors in the Fuel and Emissions Systems section before troubleshooting this circuit.
1.
Problem verification (without engine running):

Problem verification (without engine running)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Try to shift the transmission into reverse.

Can you shift the transmission into reverse?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
The failure is duplicated. Go to step 2.
2.
Reverse lockout solenoid check:

Reverse lockout solenoid check
?1.
Do the reverse lockout solenoid test.

Is the reverse lockout solenoid OK?

     
YES
     
     
     
The reverse lockout solenoid is OK. Check the change lever assembly, or inspect the internal transmission.?
     
NO
     
     
     
3.
Problem verification (with engine running):

Problem verification (with engine running)
?1.
Start the engine, and try to shift the transmission into reverse.

Can you shift the transmission into reverse?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
The failure is duplicated. Go to step 4.
4.
Shorted wire check (RLS line):

Shorted wire check (RLS line)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Jump the SCS line with the HDS.


?3.
Disconnect the following connectors.

?4.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
PCM connector A (51P): disconnected
 
Reverse lockout solenoid 2P connector: disconnected
Test circuit
RLS
Test point 1
L4 engine: Reverse lockout solenoid 2P connector No. 2 (GRN/BLK)
V6 engine: Reverse lockout solenoid 2P connector No. 2 (WHT)
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Repair a short to ground in the RLS wire between the reverse lockout solenoid and the PCM.?
     
NO
     
     
     
Check for loose terminals or poor connections between the PCM and the reverse lockout solenoid. If necessary, update the PCM if it does not have the latest software, or substitute a known-good PCM, and recheck. If the symptom/indication goes away with the updated PCM, troubleshooting is complete. If the symptom/indication goes away with a known-good PCM, replace the original PCM.?