Circuit Description
The switch that failed and generated this diagnostic trouble code (DTC) is wired to the driver door switch assembly (DDSA). The DDSA contains a microprocessor which takes the signal generated by the memory function switch, processes it, and assigns a digital message to it.
When the DDSA receives a signal to initiate a memory recall, it sends class 2 messages to the driver door module and the passenger front door module to position the mirrors, the memory seat module to position the driver seat, the instrument panel module to adjust climate controls, and the integrated radio control to adjust radio settings.
Conditions for Running the DTC
The DDSA must be powered and can not have B1328 -- Battery Voltage High or B1327-Battery Voltage Low as active DTCs for this DTC to set.
Conditions for Setting the DTC
If the DDSA receives the message that the switch is closed for more than 30 continuous seconds, the DDSA then sets this DTC.
Action Taken When the DTC Sets
The DDSA ignores the invalid switch input from the memory function switch and will not respond to it. The DDSA will respond to all other valid switch inputs.
Conditions for Clearing the MIL/DTC
The DDSA clears this DTC under two conditions. Either the switch signal is not received during one of the checks of the class 2 data link, or the power to the DDSA changes from OFF to ON.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Power Seat Systems? | -- | ||
Does the scan tool display Idle? | -- | |||
3 |
Does the Memory Recall Switches parameter momentarily change state? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
4 |
Does the scan tool display Idle? | -- | ||
5 | Test the memory set switch input circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
6 | Inspect for poor connections at the harness connector of the driver door switch assembly. 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 at the harness connector of the memory function switch. 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 driver door switch assembly. Refer to Front Door Switch Replacement in Doors. Did you complete the replacement? | -- | -- | |
9 | Replace the memory function switch. Refer to Driver Seat Adjuster Memory Switch Replacement . Did you complete the replacement? | -- | -- | |
10 |
Does the DTC reset? | -- | System OK |
