Circuit Description
The circuit for the passenger power window switch on the LF door consists of the following components:
| • | The LH front power window switch. |
| • | The simple bus interface (SBI). |
| • | The driver door module (DDM). |
The LH front power window switch is different from the other window switches. This switch contains an internal microprocessor. The LH front power window switch assembly reports all switch activity as SBI messages to the DDM. The diagnostic software for DTC B2214 is contained in the DDM. This diagnostic program is run once every 300 milliseconds. Any fault involving the DDM or the SBI may set other DTCs and affect the operation of the power door locks and outside rearview mirrors.
Conditions for Setting the DTC
DTC B2214 is set current when the SBI messages from the LH front power window switch indicates that the LR window switch has been in the UP position for 15 consecutive seconds. This diagnostic will not run if either DTC B1982 (battery voltage high) or DTC B1983 (battery voltage low) are set current.
Action Taken When the DTC Sets
This DTC is dynamic and is set current only while the fault is present. When DTC B2214 is set current the DDM ignores actuation of the LH front power window switch.
Conditions for Clearing the DTC
| • | This DTC will set from current to history when the window UP 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 fault. |
| • | If DTC B2214 is current, cycle the ignition switch from OFF to RUN. If the DTC is still current, perform the following diagnostic. |
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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Perform the power door diagnostic system check before diagnosing DTC B2214.
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This test step checks for other set DTCs.
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This test step tests the operation of all the power windows.
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This test step tests the function of the LH front power window switch.
Step | Action | Value(s) | Yes | No | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Did you perform the Power Door Diagnostic System Check? | -- | Go to Step 2 | ||||||||||||||||||
Inspect the scan tool for the following DTCs.
Are all of the above DTCs set? | -- | Go to Step 6 | Go to Step 3 | |||||||||||||||||
Do all the windows function properly? | -- | Go to Step 5 | Go to Step 6 | |||||||||||||||||
4 | Replace the LH front power window switch. Refer to Front Side Door Window Switch Replacement . Is the repair complete? | -- | Go to Step 7 | -- | ||||||||||||||||
Turn the ignition ON. Press any driver door window switch, other than the one with the DTC set. Does that switch operate the window properly? | -- | Go to Step 4 | ||||||||||||||||||
6 | Replace the DDM. Refer to Front Door Module Replacement . Is the repair complete? | -- | Go to Step 7 | -- | ||||||||||||||||
7 |
Are all the DTCs cleared? | -- | -- |
