Headlight (hi-beam) circuit

The body ecu controls the headlight relay, no. 2 Daytime running light relay (marking: drl no. 2) And no. 4 Daytime running light relay (marking: drl no. 4).

1. 1
   Perform active test by intelligent tester
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 item below in the active test and then check the relay operation.

   

1. 1
   Check headlight (low)
2. 2
   Check that the headlight (low) comes on when the light control switch is on (head).

1. 1
   Inspect fuse (head lh, head rh)
2. 2
   Remove the head lh fuse and head rh fuse from the engine room no. 2 Relay block.
3. 3
   Measure the resistance of the fuses.

Standard resistance: below 1

4. Inspect daytime running light relay (marking: drl no. 2, Drl no. 3, Drl no. 4)

1. 1
   Remove the no. 2 Relay, no. 3 Relay and no. 4 Relay from the engine room no. 2 Relay block.
2. 2
   Measure the resistance of the relays.

No. 2, No. 4

No. 3

5. Inspect headlight bulb (high)

1. 1
   Remove the headlight bulb (high).
2. 2
   Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, then check that the bulb illuminates.

   

   

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

1. 1
   Disconnect the e16 main body ecu connector.
2. 2
   Measure the voltage of the wire harness side connector.

Standard voltage

7. Check wire harness (main body ecu)

1. 1
   Remove the headlight relay from the engine room no. 2 Relay block.
2. 2
   Disconnect the e15 main body ecu connector.
3. 3
   Measure the voltage of the wire harness side connector.

Standard voltage

8. Check wire harness (headlight relay - no. 3 Daytime running light relay and body ground)

1. 1
   Remove the no. 3 Daytime running light relay from the engine room no. 2 Relay block.
2. 2
   Measure the voltage and resistance of the relay block.

Standard voltage

Standard resistance

9. Check wire harness (battery - no. 2 Daytime running light relay, bulb and body ground)

1. 1
   Remove the no. 2 Daytime running light relay from the engine room no. 2 Relay block.
2. 2
   Remove the a14 and a22 headlight bulb connectors.
3. 3
   Measure the voltage and resistance of the relay block.

Standard voltage

Standard resistance

10. Check wire harness (main body ecu - dimmer switch)

1. 1
   Disconnect the e15 main body ecu connector.
2. 2
   Disconnect the e12 headlight dimmer switch connector.
3. 3
   Disconnect the ij instrument panel junction block connector.
4. 4
   Measure the resistance of the wire harness side connectors.

Standard resistance

11. Inspect headlight dimmer switch

1. 1
   Remove the headlight dimmer switch.
2. 2
   Measure the resistance of the switch.

Standard resistance