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Diagnostic Trouble Code: B0238
Diagnostic Trouble Code Name: Defogger Door Motor Circuit
Vehicle Make: Chevrolet
Vehicle Model: Caprice (VE)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Lighting Control Switch Signal
Possible Sensor Faults
Body Control Module
Possible Related Diagnostic Trouble Codes
DTC B257B
Circuit / System Description
The instrument panel lamp dimmer switch is used to increase and decrease the brightness of the interior backlighting components. The instrument panel lamp dimmer switch provides a voltage signal that will increase as the brightness of the lights are increased and decrease as the brightness of the lights are decreased. The body control module (BCM) provides a low reference signal and a B+ voltage reference to the instrument panel lamp dimmer switch. When the instrument panel lamp dimmer switch is placed in the desired position, the dimmed voltage setting is applied from the instrument panel dimmer switch through the instrument panel lamp dimmer switch signal circuit to the BCM. The BCM interprets the signal and applies the dimmed voltage to the instrument panel lamp lamps supply voltage circuit and the interior backlighting components dim to the requested level.
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