FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Faulty Signal






Faulty signal

Checking for permanent or intermittent faults




- Ignition on.
Press the power window switch 2 steps up to check the function of the automatic power window mechanism.

Is the automatic power window mechanism functioning?

Yes - Intermittent fault

No - Checking the connectors

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Checking the connectors








- Ignition off
- Check the power window lift motor connector for contact resistance and oxidation and remedy according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. In particular, check for any damage
- Reinstall the components, reconnect the connectors etc.
- Ignition on.
Press the power window switch 2 steps up and down.

Other information:
- To access the window lift mechanism, see appropriate service procedure.









Is the automatic power window mechanism functioning?

Yes - Verification

No - Checking for open-circuits and short-circuits

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Checking for open-circuits and short-circuits
Check the cable between door control module terminal #23A and power window motor connector terminal #2. Check for a short-circuit to ground. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to supply voltage. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between door control module terminal #16A and power window lift motor connector terminal #4. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between door control module terminal #19A and power window lift motor connector terminal #1 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between door control module terminal #24A and power window motor connector terminal #5. Check for a short-circuit to ground. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to supply voltage. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters.









Was a fault detected?

Yes - Verification

No - Replacing the component

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Replacing the component




Replace the power window mechanism .
Ignition on.
Move the window to its upper limit position using manual control.
Initialize the window.
From model year 2003 inclusive, the window will lower approximately 10 centimeters and then close again during initialization.






Continue - Verification

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Intermittent fault
Check the control module and power window lift motor connectors. Check for contact resistance and oxidation. See Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for loose connections. See Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the cable between control module terminal #23A and power window lift motor terminal #2. Check the cable between control module terminal #24A and power window lift motor terminal #5. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the cable between door control module terminal #16A and power window lift motor connector terminal #4. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the cable between door control module terminal #19A and power window lift motor connector terminal #1 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters.










Continue - Fault-tracing information

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Check that the automatic power window mechanism is functioning by pressing the 2 stage button in each direction.

Is the automatic power window mechanism functioning?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking for permanent or intermittent faults

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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FAULT FOUND - Fault Found

Attempt New Test - Checking for permanent or intermittent faults

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