## Automatic Transmission

#### Interlock System - Shift Lock System Circuit Troubleshooting (cont'd)

14-100

7. Turn the ignition switch OFF.

8. Install the shift lock relay.
9. Remove the centre console (see page 20-73).
10. Disconnect shift lock solenoid connector.
11. Turn the ignition switch ON (II).
12. Press the brake pedal and measure the voltage between the No. 1 terminal of the shift lock solenoid connector and body ground.

SHIFT LOCK SOLENOID CONNECTOR

Wire side of female terminals

Is there battery voltage when pressing the brake pedal?

YES - Go to step 13.

NO - Repair open or short in the wire between the No. 1 terminal of the shift lock solenoid and the shift lock relay.

13. Measure the voltage at shift lock solenoid connector terminals when pressing the brake pedal.

SHIFT LOCK SOLENOID CONNECTOR

Wire side of female terminals

Is there battery voltage when pressing the brake pedal?

YES - Go to step 14.

NO - Repair open in the wire between the No. 2 terminal of the shift lock solenoid connector and ground, or repair poor ground (G451).

14. Connect the No. 1 terminal of the shift lock solenoid connector to the battery positive terminal and connect the No. 2 terminal to the battery negative terminal. Check that the shift lock solenoid operates.

    NOTE: Do not connect the No. 2 terminal to the battery positive terminal or you will damage the diode inside the shift lock solenoid.

SHIFT LOCK SOLENOID CONNECTOR

Terminal side male terminals

Dose the shift lock solenoid operate properly?

YES - Check for shift lever shift lock mechanism. If necessary, substitute a known-good multiplex control unit and recheck.

NO - Replace the shift lock solenoid.