M/T Reverse Lockout System Circuit Troubleshooting

Check the No. 21 (7.5 A) fuse in the under-dash fuse/relay box. Is the fuse OK?
YES | - | Go to Step 2 .
NO | - | Replace the fuse, and recheck.■
Start the engine and check the Malfunction Indicator Lamp (MIL). Does the MIL come on?
YES | - | Troubleshoot the DTC, and recheck.■
NO | - | Go to Step 3 .
Turn the ignition switch OFF. Shift to reverse gear. Can the transmission be shifted into reverse gear?
YES | - | Go to Step 5 .
NO | - | Repair the transmission and recheck.■
Turn the ignition switch ON (II). With the vehicle moving slowly (vehicle speed below 15 km/h (9 mph), shift the transmission into reverse gear. Can the transmission be shifted into reverse gear?
YES | - | Go to Step 6 .
NO | - | Go to Step 7 .
Raise the front wheels and block the rear wheels, run the vehicle to a speed above 20 km/h (12 mph). Can the transmission be shifted into reverse gear?
YES | - | Go to Step 8 .
NO | - | Intermittent failure, system is OK at this time.■
Check the VSS input in the PGM-FI data list with the PGM Tester. Is the vehicle speed input below 15 km/h (9 mph)?
YES | - | Check for a short to body ground in the GRN/BLK and GRN wire between the reverse lockout solenoid and the ECM (B2). If the wire is OK, substitute a known-good ECM and recheck.■
NO | - | Repair the VSS circuit.■
With the vehicle still running above 20 km/h (12 mph), check the VSS input in the PGM-FI data list with the PGM Tester or the HDS. Is the vehicle speed input above 20 km/h (12 mph)?
YES | - | Go to Step 9 .
NO | - | Repair the VSS circuit.■
Turn the ignition switch OFF. Disconnect the reverse lockout solenoid 2P connector. Turn the ignition switch ON (II). Measure the voltage between the reverse lockout solenoid 2P connector terminal No. 2 and body ground. Is there battery voltage?
YES | - | Go to Step 13 .
NO | - | Check for loose or poor connections at connector. If the connections are OK, repair open in the wire between No. 21 (7.5 A) fuse in the under-dash fuse/relay box and the reverse lockout solenoid.■
Turn the ignition switch OFF. Remove the reverse lockout solenoid. |

Connect the No. 2 terminal of the reverse lockout solenoid 2P connector to the battery positive terminal, and connect the No. 1 to the battery negative terminal. Check that the reverse lockout solenoid operates. Does the reverse lockout solenoid operate properly?
YES | - | Go to Step 16 .
NO | - | Replace the reverse lockout solenoid.■
Reinstall the reverse lockout solenoid and reconnect the solenoid 2P connector. Turn the ignition switch ON (II). |

Measure the voltage between ECM connector B2 and body ground. Is there battery voltage?
YES | - | Check for loose connectors at ECM connector B (31P). If necessary, update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM .■
NO | - | Repair open in the wire between reverse lockout solenoid and ECM (B2).■