Circuit Description
The switch that failed and generated this diagnostic trouble code (DTC) is wired to the passenger door module (PDM). The PDM contains a microprocessor which takes the signal generated by this switch and assigns a digital message to the switch signal. The PDM then sends this message over a simple bus interface (SBI) link to the driver door module (DDM). The DDM sends the switch message to the rear integration module (RIM), which is the "master" of all lock operations, as a Class 2 message. The RIM sends its OK to the DDM. If the OK message is received, the DDM sends the required signal to all other door modules via the simple bus interface (SBI) message system.
Conditions for Running the DTC
The DDM and the PDM must both be powered and neither can have B1327-Battery Voltage Low or B1328-Battery Voltage High set for this DTC to set.
Conditions for Setting the DTC
If the DDM receives a message indicating that the switch is closed for more than 30 continuous seconds from the PDM, the DDM sets this DTC.
Action Taken When the DTC Sets
The DDM ignores any signal from the PDM for this switch and prevents lock movement from the RFDM switches. The DDM will respond to other lock switch inputs.
Conditions for Clearing the DTC
The DDM clears this DTC when the switch signal is not received during one of the checks of the SBI. The PDM will accept a command when it no longer receives a switch input.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform A Diagnostic System Check - Door Systems? | ||
Does the scan tool display Idle? | |||
3 |
Does the Pass. Door Lock Switch parameter change state? | ||
4 |
Does the scan tool indicate the Idle state? | ||
5 | Test the passenger lock unlock input circuit for a short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | ||
6 | Inspect for poor connections/terminal tension at the right front door module harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | ||
7 | Inspect for poor connections/terminal tension at the passenger door lock switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | ||
8 | Replace the right front door module. Refer to Door Control Module Replacement . Did you complete the replacement? | -- | |
9 | Replace the passenger door lock switch. Refer to Door Lock Switch Replacement . Did you complete the replacement? | -- | |
10 |
Does the DTC reset? | System OK |
