Circuit Diagnosis - Turn/Hazard/Stop Lamps

Exterior Lamps: Brake Switch:

BRAKE SWITCH
Check connections and terminals for damage, tightness, or corrosion.

Check switch resistance pin A (gray connector) to pin C or D (black connector).

Switch resistance: Open when brake not depressed. Less than one ohm when brake depressed.

Repair/replace as needed.

REAR TAIL LAMP ASSEMBLIES
Check connections and terminals for damage, tightness, or corrosion.

Check resistance through the bulb sockets.

Repair/replace as needed.

FRONT PARK/TURN LAMP ASSEMBLIES
Check connections and terminals for damage, tightness, or corrosion.

Check resistance through the bulb sockets.

Repair/replace as needed.

TURN/HAZARD SWITCH
Refer to Turn Signals/Combination Switch for Lever Combination Switch (LCS) testing. Combination Switch

Repair/replace as needed.

BULBS
Check connections and terminals for damage, tightness, or corrosion.

Visually inspect the bulb. Check the resistance through the bulb.

Repair/replace as needed.

CENTER HIGH MOUNT STOP LAMP
Check connections and terminals for damage, tightness, or corrosion.

Check resistance through the bulb sockets.

Repair/replace as needed.

Flasher Module:

FLASHER MODULE