B3152

DTC B3152

CIRCUIT DESCRIPTION
The switch that failed and generated the diagnostic trouble code (DTC) is wired to either the driver door switch assembly (DDSA, or the passenger door module (PDM). When a front door lock switch is activated to the Lock or Unlock function, the DDSA or the PDM receives the switch input and sends the information on to the driver door module (DDM) via the power door serial data communications line. The DDM then sends this message over the Serial Data Class 2 communication line to the rear integration module (RIM), which is the master of all lock operations. If the RIM determines that the message is a valid request and conditions are correct for a door lock function to occur, it sends its OK back, via the Class 2 line to the DDM. The DDM then sends the command out to all the other door modules to Lock or Unlock the doors. Each door module supplies power and ground to its associated lock actuator to Lock or Unlock the doors.

CONDITIONS FOR RUNNING THE DTC
The door modules must be powered and can not have B1327-Battery Voltage Low or B1328-Battery Voltage High set for this DTC to set.

CONDITIONS FOR SETTING THE DTC
If the DDM detects that either switch is closed to a Lock or Unlock function for more than 30 continuous seconds, it sets the DTC.

ACTION TAKEN WHEN THE DTC SETS
The door module ignores inputs from this switch until the switch state changes.

CONDITIONS FOR CLEARING THE MIL/DTC
The current DTC will clear when the DDM does not detect the failure during the last module self diagnostic test.

DIAGNOSTIC AIDS
A sticking or binding switch can cause this DTC to set.

TEST DESCRIPTION

Step 1 - 3:

Step 4 - 10:

The number below refers to the step number on the diagnostic table.
2. Checks the existing state of the passenger door lock switch by using the current state of the Input parameter.