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Key in OFF position.
Operate the interior lamps by opening and closing the doors.
Do the interior lamps illuminate?
The interior lamps are inoperative
Instrument cluster module.
Vehicle security module
Go To Pinpoint Test A .
That was pinpoint Test A1
Now for test A2
A2 CHECK INTERIOR LAMP OPERATION AT THE HEADLAMP SWITCH
Operate the interior lamps by turning the interior lamp switch on.
Do any interior lamps illuminate?
Yes
CARRY OUT no communication test with suspect module. REFER to Section 413-01 for the instrument cluster module or Section 419-10 for the vehicle security module.
No
GO to A3 .
when you have the engine running is the Service Engine light on??