B2473

Diagnostic Trouble Code Chart:

Wiring Schematic:

CIRCUIT DESCRIPTION
The body control module (PZM) commands the high beams through a discrete output to the high/low beam headlamp control relay. When the headlamps relay is energized the high/low beam headlamp control relay provides a power source to either the low beams or the high beams.

CONDITIONS FOR SETTING THE DTC
The commanded state of the high beams does not match the feedback state.

ACTION TAKEN WHEN THE DTC SETS
The PZM continues to command the state requested until the instrument cluster revokes the request.
^ When the measurements are requested in the diagnostic table below, use the J 39200 Digital Multimeter (DMM) with the correct terminal adapter from the J 35616-A.
^ When a proper connection is requested, refer to Intermittents and Poor Connections Diagnosis.
^ When a wire, connector or terminal repair is requested, use the J 38125-B. Refer to Diagrams.