The warning light for the lighting system keeps coming on. It will be one for a day or two and then not for another day or so. It appears all the bulbs are still burning.

I read in manual that it is suppose to mean that there is a problem with one of the bulbs. I can't find the problem.

Anyone else ever had this one?

 

I had this one when the passenger side front side marking light was out.

 

Diagnostic Test
1. THE LAMP OUTAGE INDICATOR LAMP/INSTRUMENT CLUSTER
Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Note: Check connectors — Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Lamp Outage Indicator circuit at the Instrument
Cluster C1 harness connector.
Is the voltage above 10 volts?
Yes >> Inspect the Lamp Outage Indicator Lamp. If OK, replace the
Instrument Cluster. Refer to Page 8J-83.
Perform BODY VERIFICATION TEST.
No >> Go to 2
2. MEASURE LAMP OUTAGE INDICATOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the Illumination Control Module harness connector.
Note: Check connectors — Clean/repair as necessary.
Measure the resistance of the Lamp Outage Indicator circuit from the Illumination
Control Module D harness connector to the Instrument Cluster
C1 harness connector.
Is the resistance below 5.0 ohms?
Yes >> Replace the Illumination Control Module.
Perform BODY VERIFICATION TEST.
No >> Repair the Lamp Outage Indicator circuit for an open.
Perform BODY VERIFICATION TEST.

 

BODY VERIFICATION TEST
1.Turn the ignition off.
Disconnect all jumper wires and reconnect all previously disconnected
components and connectors.
Note: If the SKREEM or the PCM was replaced, refer to the service
information for proper programming procedures.
If the Body Control Module was replaced, turn the ignition on for 15 seconds
(to allow the new BCM to learn VIN) or engine may not start.
Program all RKE transmitters and other options as necessary.
With the DRB IIIT, erase all Diagnostic Trouble Codes (DTCs) from ALL
modules. Start the engine and allow it to run for 2 minutes. Operate all
functions of the system that caused the original complaint.
Ensure that all accessories are turned off and the battery is fully charged.
Turn the ignition off and wait 5 seconds. Turn the ignition on and using the
DRB IIIT, read DTCs from ALL modules.
Are any DTCs present or is the original complaint still present?
Are any DTCs present?
YES >> Repair is not complete, refer to appropriate symptom.
NO >> Repair is complete.