For 1990-2009 cars

Symptom | Procedure
--- | ---
Brake and center high mount stop lamp (CHMSL) inoperative | Go to Chart 1.
Center high mount stop lamp (CHMSL) inoperative, stop lamps OK |

1. Remove the CHMSL connector.
2. Probe terminal circuit 20, LT BLU with a test light-to-ground.
3. Apply brakes.

• | Bulb does not light -- open circuit 20 between left IPFB and CHMSL connector.

• | Bulb lights -- faulty bulb or open circuit 650. 450 sedan or 650 wagon.

Only one brake lamp does not operate. | Inspect bulb and related wiring for affected stop lamp.
Turn lamps do not operate, hazard lamps OK. | Go to Chart 2.
Hazard lamps do not operate, turn lamps OK. | Go to Chart 3.
Left turn indicator inoperative | Check bulb. If OK -- open circuit 14 between left IPFB.
Right turn indicator inoperative | Check bulb. If OK, open circuit 15 between left IPFB.
Park, marker and tail lamps inoperative |

1. Connect Tech 2.
2. Turn head lamp switch to PARK position.
3. Observe park lamp input on Tech 2.

• | Input ON -- open circuit 9 between left IPFB and lamps

• | Input not ON -- disconnect headlamp connector. Connect a fused jumper between circuit 240, ORN and circuit 9, BRN.

- | Input on the Tech 2 changes to ON -- faulty connections or headlamp switch.

- | Input on the Tech 2 does not change to ON -- open circuit 9 between headlamp switch and left IPFB.

Both license lamps inoperative | Open circuit 9 between left IPFB and lamps
Both back-up lamps inoperative | Go to Chart 4.
One back-up lamp inoperative | Inspect related bulb and wiring.
Back-up lamps are always ON. |

1. Inspect adjustment of transaxle range switch (automatic) or back-up lamp switch (manual).
2. If OK, circuit 240 shorted to B+, or faulty transaxle range switch (auto) or back-up lamp switch (manual).

### Chart 1 - Brake Center High Mount Stop Lamp (CHMSL) Inoperative

### Chart 2 - Turn Lamps Do Not Operate - Hazard Lamps OK

### Chart 3 - Hazard Lamps Inoperative - Turn Lamps OK

### Chart 4 - Left Hand and Right Hand Back-Up Lamps Are Inoperative