Reverse Lockout System Symptom Troubleshooting - Driver can select reverse gear when vehicle speed is 12 mph (20 km/h) or more
Driver can select reverse gear when vehicle speed is 12 mph (20 km/h) or more
NOTE: Refer to How to Troubleshoot Circuits at the PCM connectors in the Fuel and Emissions Systems section before troubleshooting this circuit.

1.
PGM-FI system DTC check:

PGM-FI system DTC check
?1.
Test-drive the vehicle.

?2.
Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
       

Are any DTCs stored?

     
YES
     
     
     
     
NO
     
     
     
DTC is not indicated. Go to step 2.
2.
Open wire check (IG1 line):

Open wire check (IG1 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Reverse lockout solenoid 2P connector

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Reverse lockout solenoid 2P connector: disconnected
Test point 1
Reverse lockout solenoid 2P connector No. 1
Test point 2
Body ground


Is there battery voltage?

     
YES
     
     
     
The IG1 wire is OK. Go to step 3.
     
NO
     
     
     
Repair an open in the IG1 wire between the No. C30 (10 A) fuse in the under-dash fuse/relay box and the reverse lockout solenoid.?
3.
Open wire check (RVS LCK line):

Open wire check (RVS LCK line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Jump the SCS line with the HDS.


?3.
Disconnect the following connector.
PCM connector C (51P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
PCM connector C (51P): disconnected
 
Reverse lockout solenoid 2P connector: disconnected
Test point 1
PCM connector C (51P) No. 23
Test point 2
Reverse lockout solenoid 2P connector No. 2


Is there continuity?

     
YES
     
     
     
The RVS LCK wire is OK. Go to step 4.
     
NO
     
     
     
Repair an open in the RVS LCK wire between the reverse lockout solenoid and the PCM.?
4.
Reverse lockout solenoid check:

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

Is the reverse lockout solenoid OK?

     
YES
     
     
     
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.?
     
NO