B1572

CIRCUIT DESCRIPTION
The switch that failed and generated this diagnostic trouble code (DTC) is a built in pan of the driver door switch assembly (DDSA). The DDSA contains a microprocessor which takes the signal generated by the switch and assigns a digital message to the switch signal. The DDSA then sends this message over the power door serial data link to the driver door module (DDM). The DDM then either moves the left mirror or sends commands over the power door serial data link to the passenger front door module (PDM) to move the right mirror.

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

CONDITIONS FOR SETTING THE DTC
If the DDM receives the message that a mirror switch is closed for more than 30 continuous seconds, the DDM sets a DTC.

ACTION TAKEN WHEN THE DTC SETS
The DDM ignores the continuous message from the driver door switch assembly (DDSA) for this switch. The DDM will not respond to the invalid mirror switch message as a command for either door mirror. The DDM will respond to all other valid mirror switch messages.

CONDITIONS FOR CLEARING THE DTC
When the switch message status changes, the DDM clears this current DTC and stores it as history. The history DTC will clear either after 50 OFF/ON ignition switch cycles without a repeated failure or in response to a scan tool command.

DIAGNOSTIC AIDS
An intermittently sticking or binding switch may cause the DTC to set.

TEST

Steps 1-9: