Reverse Lockout System

Circuit Troubleshooting (cont'd)

 13-58  

  1. 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/WHT wire between the reverse lockout solenoid and the ECM (B7). If the wire is OK, substitute a known-good ECM and recheck.

NO - Repair the VSS circuit.

  1. 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.

    Is the vehicle speed input above 20 km/h (12 mph)?

YES - Go to step 9.

NO - Repair the VSS circuit.

  1. Turn the ignition switch OFF.
  1. Disconnect the reverse lockout solenoid 2P connector.
  1. Turn the ignition switch ON (II).
  1. Measure the voltage between the reverse lockout solenoid 2P connector terminal No. 2 and body ground.

REVERSE LOCKOUT SOLENOID 2P CONNECTOR

Wire side of female terminals

Is there battery voltage?

YES - Go to step 13.

NO - Check for loose or poor connections at C101 (20P) connector. If the connections are OK, repair open in the wire between No. 4 (7.5A) fuse in the under-dash fuse/relay box and the reverse lockout solenoid.

  1. Turn the ignition switch OFF.
  1. Remove the reverse lockout solenoid (see page 13-22).
  1. Connect the No. 2 terminal of the reverse lockout solenoid to the battery positive terminal, and connect the No. 1 to the battery negative terminal. Check that the reverse lockout solenoid operates.

REVERSE LOCKOUT SOLENOID 2P CONNECTOR

Terminal side of male terminals

Does the reverse lockout solenoid operate properly?

YES - Go to step 16.

NO - Replace the reverse lockout solenoid.

  1. Reinstall the reverse lockout solenoid and reconnect the solenoid 2P connector.
  1. Turn the ignition switch ON (II).
  1. Measure the voltage between ECM connector B7 and body ground.

ECM CONNECTOR B (24P)

Wire side of female terminals

Is there battery voltage?

YES - Check for loose connectors at ECM connector B (24P). If necessary, substitute a known-good ECM, then recheck (see page 11-5). 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 (B7).