SL L4-1.9L SOHC VIN 9 (1991)
Dimmer Switch: Component Tests and General Diagnostics
Component Testing - Coupe - Park/Marker/License/Tail/Dim Illuminations Lamps
BULBS
Visually inspect the bulb. Check the resistance through the bulb.
Repair as needed.
If this component is good, go to the next item indicated on the chart.
TAILLAMP ASSEMBLIES
Visually inspect the lamp assembly. Check resistance through the connector and pigtail.
Repair as needed.
If this component is good, go to the next item indicated on the chart.
HEADLAMP SWITCH
Check switch resistance.
Switch resistance:
Pin F to Pin K in:
Off
Open
Doors Open
Open
Park
Less than 1 ohm
Headlamp
Less than 1 ohm
Repair as needed.
I/P DIMMER
Check switch resistance.
Switch resistance:
Dim
Greater than 8 ohms
Medium
3 - 7 ohms
Bright
Less than 2 ohms
Repair as needed.
STOP LAMP SWITCH (BRAKE SWITCH)
Check connections and terminals for damage, tightness, or corrosion.
Check switch resistance:
Pin A or B (Gray connector) to Pin C or D (Black connector).
Switch resistance: OPEN when brake not depressed. Less than one ohm when brake depressed.
FLASHER MODULE
Refer to chart for diagnosis.
