Lights On Indicator Malfunction
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Lights On Indicator Malfunction
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Circuit/System Description
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With the headlight switch in the HEADLAMP or PARKLAMP position, the appropriate headlamp switch signal circuit is grounded through the headlight switch. The body control module (BCM) then sends a serial data message to the instrument cluster requesting the instrument cluster to illuminate the lights on indicator. With the turn signal/multifunction switch in the HIGH BEAM or FLASH TO PASS position the appropriate turn signal/multifunction switch signal circuit is grounded through the turn signal/multifunction switch. The BCM then sends a serial data message to the instrument cluster requesting the instrument cluster to illuminate the high beam indicator. The BCM will also request the instrument cluster to turn on the lights on indicator located in the driver information center anytime the headlamps are ON and the ignition is OFF or the driver door is opened.
This diagnostic procedure assumes that the headlamps operate as described in
Exterior Lighting Systems Description and Operation
.
Schematic Reference
Connector End View Reference
Component Connector End Views
Description and Operation
Exterior Lighting Systems Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for information on diagnostic tools
Lights On Indicator Malfunction
Ignition ON, command the All Indicators test ON and OFF with the scan tool, verify that the lights on indicator changes between turn ON and OFF.
High Beam Indicator Malfunction
Ignition ON, command the All Indicators test ON and OFF with the scan tool, verify that the high beam indicator changes between turn ON and OFF.
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for BCM or instrument cluster replacement, setup, and programming
