Symptom Chart

Symptom	Possible Causes	Action
Low beam lamp(s) inoperative	Bulb failure Fuse(s) blown Circuit fault Lighting control switch fault Steering column left multifunction switch fault	Check the bulb condition Check the fuse condition Refer to the electrical circuit diagrams and test the low/high beam circuits for open circuit Test the operation of the lighting control switch Test the operation of the steering column left multifunction switch fault Using the manufacturer approved diagnostic system, check the Central Junction Box (CJB) for related DTCs and refer to the relevant DTC index
High beam lamp(s) inoperative
Low beam lamp(s) dim	Incorrect bulb rating Tourist lever set in the wrong position Circuit fault Lighting control switch fault Steering column left multifunction switch fault	Check the bulb condition and rating Check the tourist lever is set correctly Refer to the electrical circuit diagrams and test the low/high beam circuits for high resistance Test the operation of the lighting control switch Test the operation of the steering column left multifunction switch fault
High beam lamp(s) dim
Low beam lamp(s) stuck on	Circuit fault Lighting control switch fault Steering column left multifunction switch fault Headlamp timer function fault	Refer to the electrical circuit diagrams and test the headlamp low/high beam circuits for short circuit to power Test the operation of the lighting control switch Test the operation of the steering column left multifunction switch fault Test the operation of the headlamp timer Using the manufacturer approved diagnostic system, check the Central Junction Box (CJB) for related DTCs and refer to the relevant DTC index
High beam lamp(s) stuck on
Headlamp low/high beam switching function inoperative	Circuit fault Steering column left multifunction switch fault Xenon lamp shutter mechanism fault	Refer to the electrical circuit diagrams and test the low/high beam switching circuit for short circuit to ground, short circuit to power, open circuit, high resistance Test the operation of the steering column left multifunction switch fault Test the operation of the xenon lamp shutter mechanism Using the manufacturer approved diagnostic system, check the Central Junction Box (CJB) for related DTCs and refer to the relevant DTC index
Warning lamp(s) inoperative	Fuse(s) blown Lighting control switch fault Steering column left multifunction switch fault Circuit fault Instrument cluster fault	Check the fuse(s) Test the operation of the lighting control switch Test the operation of the steering column left multifunction switch fault Refer to the electrical circuit diagrams and test the warning indicator circuit for short circuit to ground, short circuit to power, open circuit, high resistance Using the manufacturer approved diagnostic system, check the Instrument Cluster (IC) for related DTCs and refer to the relevant DTC index