B2472

Chart 1 Of 2:

Chart 2 Of 2:

Wiring Schematic:

CIRCUIT DESCRIPTION
The body control module (PZM) may command the low beams through a discrete output to the low beam relay. Grounding this output also grounds the headlamps input to the instrument cluster.

CONDITIONS FOR SETTING THE DTC
A short to ground is tested for under the following conditions:
^ The exterior lamp power is active.
^ The low beam output is inactive.
^ The headlamp switch is not active.
^ DTC B1970 is not active.

A short to the battery is tested for under the following conditions:
^ The exterior lamp power is active.
^ The low beam output is active.
^ DTC B1970 is not active.

ACTION TAKEN WHEN THE DTC SETS
The PZM continues to command the state requested until the state is achieved or changed.

CONDITIONS FOR CLEARING THE DTC
The commanded state matches the feedback state.