Turn Signal Lamps Malfunction
- Ignition OFF, disconnect the harness connector at the inoperative turn signal lamp.
- Test for less than 5.0 Ω between the appropriate ground circuit terminal listed below and ground.
- E4RF Turn Signal Lamp - Right Front ground circuit harness connector terminal 1
- A9A Outside Rearview Mirror - Driver ground circuit harness connector terminal 4
- E4LF Turn Signal Lamp - Left Front ground circuit harness connector terminal 1
- A9B Outside Rearview Mirror - Passenger ground circuit harness connector terminal 4
- E42L Tail Lamp Assembly - Left ground circuit harness connector terminal F
- E42R Tail Lamp Assembly - Right ground circuit harness connector terminal F
- If greater than the specified range, test the ground circuit for an open circuit/high resistance.
- Connect a test lamp between the appropriate control circuit terminal listed below and ground.
- E4RF Turn Signal Lamp - Right Front circuit harness connector terminal 2
- A9A Outside Rearview Mirror - Driver circuit harness connector terminal 16
- E4LF Turn Signal Lamp - Left Front circuit harness connector terminal 2
- A9B Outside Rearview Mirror - Passenger circuit harness connector terminal 16
- E42R Tail Lamp Assembly - Auxiliary Right Turn Signal Lamp circuit harness connector terminal B
- E42L Tail Lamp Assembly - Auxiliary Left Turn Signal Lamp circuit harness connector terminal B
- Command the appropriate Turn Signal Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
- If the test lamp is always ON, test the control circuit for a short to voltage. If the test shows that the circuit is normal, replace the body electronic module K9.
- If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the test shows that the circuit is normal, replace the body electronic module K9.
- If all circuits test normal, replace the appropriate turn signal lamp assembly.