Cell 147: Left Outside Power Mirror
Circuit Description
The LH front power window switch receives inputs from the memory function switch. When you press the MEMORY-1 switch, the LH front power window switch recognizes the input and sends a message on the simple bus interface (SBI) to the driver door module (DDM).
The message indicates that the LH front power window switch received a memory recall input. The DDM then relays the message through the class 2 serial data line to the Memory Seat Module (MSM).
Conditions for Setting the DTC
| • | DTC DDM B2240 sets when the MEMORY-1 switch is active for 30 seconds continuously. |
| • | DTCs B1982 (Battery Voltage High) and B1983 (Battery Voltage Low) must not be current or the diagnostic will not run. |
Action Taken When the DTC Sets
| • | The DDM will not respond to inputs from the shorted memory function switch. |
| • | The DDM will continue to respond to valid inputs from the other memory function switches. |
Conditions for Clearing the DTC
| • | This DTC will set from current to history when the MEMORY-1 input cycles off or when the power mode changes from OFF to RUN. |
| • | The history DTC will clear after 50 ignition cycles. |
| • | Use a scan tool in order to clear a history DTC. |
Diagnostic Aids
A history DTC is evidence of an intermittent condition.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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This step determines if there is a stuck switch or the wiring input to the LH front power window switch. The DTC will set again if there is a short in the wiring or there is an internal LH front power window switch condition. The DTC will not set again if there is a stuck switch because the switch is disconnected from the LH front power window switch.
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This step determines if there is a short in the input wiring to the LH front power window switch.
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Was the Power Door Diagnostic System Check performed? | -- | Go to Step 2 | |||||
Does the DTC set again? | -- | Go to Step 3 | Go to Step 5 | |||||
Test for a short to ground in the appropriate circuit:
Is there a short to ground in CKT 615 or CKT 616? | -- | Go to Step 6 | Go to Step 4 | |||||
4 | Replace the LH front power window switch. Refer to Front Side Door Window Switch Replacement . Is the repair complete? | -- | Go to Step 7 | -- | ||||
5 | Replace the memory function switch. Is the repair complete? | -- | Go to Step 7 | -- | ||||
6 | Repair the short to ground in the appropriate circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 7 | -- | ||||
7 |
Are all the DTCs cleared? | -- | -- |
