DTC B123A-86: Left Front Turn Indicator - Signal invalid: Action
- Refer to the applicable SYSTEM WIRING DIAGRAMS and check the left headlamp power and ground circuits for open circuit, high resistance
- Refer to the applicable SYSTEM WIRING DIAGRAMS and check the front left turn signal indicator circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Refer to the applicable SYSTEM WIRING DIAGRAMS and check the headlamp LIN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance