Wireless Ignition Node (WIN)

U0037-LIN BUS





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously when the ignition is on.

- Set Condition:
The module detects a short to ground, short to voltage or an open circuit on the (D508) Com-LIN Tire Pressure Monitor LAN (LIN Bus) circuit.





Diagnostic Test

1. VERIFY DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, record and erase the Wireless Ignition Node (WIN) DTCs.
3. Cycle the ignition from on to off to on three times.
4. Wait 30 seconds.
5. With the scan tool, read the active Wireless Ignition Node (WIN) DTCs.

Does the scan tool display: U0037-LIN BUS as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE RAIN SENSOR




1. Turn the ignition off.
2. Disconnect the Rain Sensor harness connector.

NOTE: If this vehicle is not equipped with a Rain Sensor, go to the next step.

3. Turn the ignition on.
4. With the scan tool, erase the Wireless Ignition Node (WIN) DTCs.
5. Cycle the ignition from on to off to on three times.
6. Wait 30 seconds.
7. With the scan tool, read the active Wireless Ignition Node (WIN) DTCs.

Does the scan tool display active: U0037-LIN BUS?

yes

- Go To 3

No

- Replace the Rain Sensor. Light Rain Sensor Module (LRSM) - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. STEERING COLUMN LOCK MODULE




1. Turn the ignition off.
2. Disconnect the Steering Column Lock Module (ELV) harness connector.

NOTE: If this vehicle is not equipped with a Steering Wheel Lock Module (BUX), go to the next step.

3. Turn the ignition on.
4. With the scan tool, erase the Wireless Ignition Node (WIN) DTCs.
5. Cycle the ignition from on to off to on three times.
6. Wait 30 seconds.
7. With the scan tool, read the active Wireless Ignition Node (WIN) DTCs.

Does the scan tool display active: U0037-LIN BUS?

Yes

- Go To 4

No

- Replace the Steering Column Lock Module. The Wireless Ignition Node (WIN) must also be replaced along with the Steering Column Lock Module (ELV). When replacing the WIN and the Steering Column Lock Module (ELV), the WIN MUST be programmed BEFORE the Steering Column Lock Module (ELV) is programmed.
- Replace and program the Wireless Ignition Node (WIN). Wireless Ignition Node Receiver - Removal.
- Replace and program the Steering Column Lock Module (ELV). Shaft Lock Module - Removal.
- Perform the WIN VERIFICATION TEST. Wireless Ignition Node (WIN) Verification Test.

4. (D508) LIN BUS CIRCUIT SHORTED TO THE (Z905) GROUND CIRCUIT




1. Turn the ignition off.
2. Disconnect the Wireless Ignition Node harness connector.
3. Measure the resistance between the (D508) LIN Bus circuit and the (Z905) Ground circuit in the WIN harness connector.

Is the resistance below 10K Ohms?

Yes

- Repair the (D508) LIN Bus circuit for a short to the (Z905) Ground circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 5

5. (D508) LIN BUS CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition on.
2. Measure the voltage between ground and the (D508) LIN Bus circuit in the WIN harness connector.

Is there any voltage present?

Yes

- Repair the short to voltage in the (D508) LIN Bus circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 6

6. (D508) LIN BUS CIRCUIT OPEN




1. Turn the ignition off.
2. Measure the resistance of the (D508) LIN Bus circuit between the WIN connector and the Rain Sensor or the Steering Column Lock Module (ELV) (BUX) (if equipped) harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Replace the Wireless Ignition Node (WIN). If this vehicle is equipped with a Steering Column Lock Module (BUX), it must also be replaced. When replacing the WIN and the Steering Column Lock Module (ELV), the Win MUST be programmed BEFORE the Steering Column Lock Module (ELV) is programmed.
- Replace and program the Wireless Ignition Node (WIN). Wireless Ignition Node Receiver - Removal.
- Replace and program the Steering Column Lock Module (ELV). Shaft Lock Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open in the (D508) LIN Bus circuit.
- Perform the WIN VERIFICATION TEST. Wireless Ignition Node (WIN) Verification Test.