Turn signal light circuit

The turn signal flasher relay (marking: flsh) in the main body ecu turns on when it receives signals from the headlight dimmer switch integrated with the turn signal switch, causing the turn signal lights to flash.

1. 1
   Check operation of turn signal light
2. 2
   When the turn signal light switch is operated, check that the appropriate turn signal light flashes.

   

1. 1
   Inspect fuse (ecu-ig2, haz)
2. 2
   Remove the ecu-ig2 fuse from the instrument panel junction block.
3. 3
   Remove the haz fuse from the engine room no. 1 Relay block.
4. 4
   Measure the resistance of the fuses.

Standard resistance: below 1

3. Check wire harness (battery - turn signal flasher relay)

1. 1
   Disconnect the ib instrument panel junction block connector.
2. 2
   Remove the turn signal flasher relay from the instrument panel junction block.
3. 3
   Measure the voltage of the wire harness side connectors.

Standard voltage

1. 1
   Inspect headlight dimmer switch

   

2. 2
   Remove the headlight dimmer switch.
3. 3
   Inspect the turn signal switch.
4. 4
   Measure the resistance of the switch.

Standard resistance

5. Check wire harness (headlight dimmer switch - instrument panel junction block)

1. 1
   Remove the turn signal flasher relay.
2. 2
   Disconnect the e15 headlight dimmer switch connector.
3. 3
   Measure the resistance of the wire harness side connectors and junction block.

Standard resistance

1. 1
   Inspect front turn signal light
2. 2
   Remove the front turn signal light.
3. 3
   Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, then check that the light comes on.

7. Check wire harness (instrument panel junction block - front turn signal light)

1. 1
   Disconnect the a12 and a24 front turn signal light connectors.
2. 2
   Disconnect the ib instrument panel junction block connector.
3. 3
   Measure the resistance of the wire harness side connectors.

Standard resistance

8. Inspect rear turn signal light

1. 1
   Remove the rear combinationl light.
2. 2
   Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 1, then check that the light comes on.

9. Check wire harness (instrument panel junction block - rear turn signal light)

1. 1
   Disconnect the k12 and k14 rear combination light connectors.
2. 2
   Disconnect the ia instrument panel junction block connector.
3. 3
   Measure the resistance of the wire harness side connectors.

Standard resistance