## Automatic Transmission

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

14-99

4-door Model (KH Model)

1. Press the brake pedal.

Are the brake lights ON?

YES - Go to step 2.

NO - Repair faulty brake light circuit.

2. Remove the shift lock relay and check for continuity between the relay terminals (see page 22-80).

Is the shift lock relay OK?

YES - Go to step 3.

NO - Replace the shift lock relay.

3. Measure the voltage between the No. 1 terminal of the shift lock relay and body ground when pressing the brake pedal and when it released.

SHIFT LOCK RELAY CONNECTOR

Terminal side of female terminals

Is there battery voltage when pressing the brake pedal and no voltage when it released?

YES - Go to step 4.

NO - Repair open or short in the wire between the No. 3 terminal of the shift lock relay and the brake pedal position switch.

4. Turn the ignition switch ON (II).

5. Measure the voltage between the No. 4 terminal of the shift lock relay and body ground.

SHIFT LOCK RELAY CONNECTOR

Terminal side of female terminals

Is there battery voltage?

YES - Go to step 6.

NO - Check for blown No. 10 (7.5A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open or short in the wire between the No. 4 terminal of the shift lock relay and the under-dash fuse/relay box.

6. Measure the voltage between the No. 3 terminal of the shift lock relay and body ground. (The shift lever is position.)

SHIFT LOCK RELAY CONNECTOR

Terminal side of female terminals

Is there voltage?

YES - Repair open in ATP P wire between the No. 3 terminal of the shift lock relay and the transmission range switch.

NO - Go to step 7.