Illumination circuit

The main body ecu receives information regarding the door courtesy switch and door lock position switch, and turns on the room light.

1. 1
   Perform active test by intelligent tester (main body ecu)
2. 2
   Connect the intelligent tester (with can vim) to the dlc3.
3. 3
   Turn the ignition switch to the on position and press the intelligent tester main switch on.
4. 4
   Select the items below in the active test and then check the main body ecu operation.

   

1. 1
   Inspect fuse (dome)
2. 2
   Remove the dome fuse from the engine room no. 2 Relay block.
3. 3
   Measure the resistance of the fuse.

Standard resistance: below 1

3. Inspect room light assembly

1. 1
   Remove the room light assembly
2. 2
   Measure the resistance of the room light switch base.

Standard resistance

4. Inspect room light bulb

1. 1
   Remove the room light assembly.
2. 2
   Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, then check that the light comes on when the switch is in the door position.

3. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 3, then check that the light comes on when the switch is in the on position.

5. Check harness and connector (battery - room light and main body ecu)

1. 1
   Disconnect the ik instrument panel junction block connector.
2. 2
   Measure the voltage of the wire harness side connector.

Standard voltage

6. Inspect map light bulb

1. 1
   Remove the map light assembly.
2. 2
   Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 1, then check that the light comes on when the switch is in the door position.

3. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 7, then check that the light comes on when the switch is in the on position.

7. Inspect map light

1. 1
   Replace the map light bulb with a normally functioning one or a new one.
2. 2
   Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 1, then check that the light comes on when the switch is in the door position.

3. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 7, then check that the light comes on when the switch is in the on position.

8. Check wire harness (battery - map light and main body ecu)

1. 1
   Disconnect the ik instrument panel junction block connector.
2. 2
   Measure the voltage of the wire harness side connector.

Standard voltage

9. Inspect ignition key cylinder light

1. 1
   W/ engine immobiliser system
2. 2
   Remove the transponder key amplifier (ignition key cylinder light).
3. 3
   Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 6, then check that the light comes on.

2. W/o engine immobiliser system

1. 1
   Remove the ignition key cylinder light.
2. 2
   Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, then check that the light comes on.

10. Check wire harness (battery - main body ecu)

1. 1
   Disconnect the ie instrument panel junction block connector.
2. 2
   Measure the voltage of the wire harness side connector.