B221D

B221D-00-RAIN SENSOR MODULE (RSM) INTERNAL





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

Theory of Operation

The Body Control Module (BCM) is the Local Interconnect Network (LIN) master for the Light Rain Sensing Module (LRSM). The LRSM performs an internal self test and sends the information to the BCM. The repair of this fault condition does not involve any external circuitry and centers on verifying the integrity of the internal circuitry and software validity.

- When Monitored:
With the ignition on.

- Set Condition:
The Light Rain Sensing Module (LRSM) detects an internal failure.





REPLACE THE LIGHT RAIN SENSING MODULE IF THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, erase the DTCs.
3. Cycle the ignition from on to off three times.
4. Turn the ignition on and wait 30 seconds.
5. With the scan tool, read the DTCs.

Does the scan tool display DTC: B221D-00-RAIN SENSOR MODULE (RSM) INTERNAL as active?

Yes

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

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 correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.