B2374

B2374-WASHER SWITCH INPUT CIRCUIT







Theory of Operation

The Washer/Wiper Switch is part of the Right Multifunction Switch. The switching status is transferred to the Cluster by way of the LIN bus, a serial sub-bus. The Cluster converts the data to CAN(B) and sends the message to the corresponding module on the bus.

- When Monitored:
Continuously with the ignition on.

- Set Condition:
The Cluster senses that the Washer Switch is in the Set position for greater than 50 seconds.





1. DTC IS ACTIVE

NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set.

NOTE: If U1149-LOST COMMUNICATION WITH MULTI-FUNCTION SWITCH is set along with this DTC, diagnose the communication DTC first.

NOTE: If U1008-LIN 1 BUS is set along with this DTC, diagnose the communication DTC first.

NOTE: If P0562-BATTERY VOLTAGE LOW or P0563-BATTERY VOLTAGE HIGH is set along with this DTC, diagnose the battery voltage DTC first.

1. Ignition on, engine not running.
2. With the scan tool, select View DTCs in the Cluster.

Is the DTC status Active at this time?

Yes

- Go To 2

No

- Go To 4

2. RIGHT MULTIFUNCTION SWITCH
1. Turn the ignition off.
2. Replace the Right Multifunction Switch.
3. Turn the ignition on.
4. Press and release the Washer Switch Switch several times.
5. With the scan tool, clear stored DTCs in the Cluster.
6. With the scan tool, select Data Display and view the Washer switch data.
7. While monitoring the Washer switch data, press and release the Washer switch several times.

Does the Washer switch data change states when the switch is pressed and released?

Yes

- Test complete.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CLUSTER
1. View the repair.

Repair

- Replace the Cluster.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. INTERMITTENT WASHER SWITCH CIRCUIT
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
3. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
4. Look for the data to change or for the DTC to reset during the wiggle test.

Were any problems found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Test complete.
- Perform the BODY VERIFICATION TEST. Body Verification Test.