U113D

U113D-LOST COMMUNICATION WITH MASTER POWER WINDOW SWITCH - DDM





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Whenever the module is awake.

- Set Condition:
When one or both door modules have lost communication with the Driver Express Window/Door Lock Switch, this code will set.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
NOTE: If the scan tool displays any other power window DTC(s), repair them first before continuing.

Turn the ignition on.
With the scan tool, record and erase DTC's
Try to operate the Front Windows up and down several times.
Wait 30 seconds.
With the scan tool, read DTC's.
Does the scan tool display: U113D-LOST COMMUNICATION WITH MASTER POWER WINDOW SWITCH?

Yes

- Go to 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

2. CHECK THE LIN BUS CIRCUIT




With the scan tool, erase DTC's.
Turn the ignition off.
Disconnect the Driver Window/Door Lock Switch C2 connector.
Turn the ignition on.
Measure the voltage between the (D500) LIN Bus circuit and the (D501) LIN Bus Return circuit.
Is the voltage above 8.0 volts?

No

- Go to 4
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

Yes

- Go to 3

3. (D500) LIN BUS CIRCUIT SHORT TO VOLTAGE




Turn the ignition off.
Disconnect the Driver Door Module C5 connector.
Turn the ignition on.
Measure the voltage between Ground and the (D500) LIN Bus circuit.
Is there any voltage present?

Yes

- Repair the (D500) LIN Bus circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

No

- Replace the Driver Window/Door Lock Switch.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

4. (D501) LIN BUS RETURN CIRCUIT OPEN




Using a 12-volt test light connected to 12-volts, check the (D501) LIN Bus Return circuit in the Window Switch connector.
Does the test light illuminate brightly?

Yes

- Go to 5

No

- Repair the (D501) LIN Bus Return circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

5. (D500) LIN BUS CIRCUIT SHORT TO GROUND




Turn the ignition off.
Disconnect the Driver Door Module C5 connector.
Measure the resistance between Ground and the (D500) LIN Bus circuit in the Door Module C4 connector.
Is the resistance below 10,000.0 ohms?

Yes

- Repair the (D500) LIN Bus circuit for a short to the ground.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

No

- Go to 6

6. (D500) LIN BUS CIRCUIT OPEN




Measure the resistance of the (D500) LIN Bus circuit between the Door Module C5 connector and the Driver Express Window/Door Lock Switch connector.
Is the resistance below 2.0 ohms?

No

- Repair the (D500) LIN Bus circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.

Yes

- Replace the Driver Door Module.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.