B3527

Diagnostic Chart:

Schematics:

CIRCUIT DESCRIPTION
The switch that failed and generated this diagnostic trouble code (DTC) is part of the driver door switch. This module contains a microprocessor which takes the ground signal generated by this switch and assigns a digital message to the switch signal. The driver door switch then sends this message over a simple bus interface (SBI) link to the driver door module (DDM).

CONDITIONS FOR RUNNING THE DTC
The DDM must be powered for this DTC to set.

CONDITIONS FOR SETTING THE DTC
If the driver door module (DDM) receives the message that the switch is closed for more than 30 continuous seconds the DDM sets this DTC.

ACTION TAKEN WHEN THE DTC SETS
The driver door switch assembly does not send a new lockout ON/OFF message until the DTC is cleared and the switch is re-activated. The windows and the indicator lamp respond to the last valid switch signal.

CONDITIONS FOR CLEARING THE DTC
The DDM clears this DTC when the switch message indicates a change of states.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
2. Checks the existing state of the driver door window switch module passenger window lockout switch by using the current state of the input parameter.