Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 809
B221D-(RSM) RAIN SENSOR MODULE INTERNAL
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Rain Sensing Module detects an internal failure.
Possible Causes
RAIN SENSING MODULE
Diagnostic Test
1.
REPLACE THE RAIN SENSING MODULE
With the scan tool, read RSM DTCs.
Is DTC: B221D-(RSM) RAIN SENSOR MODULE INTERNAL active?
Yes
>> Replace the Rain Sensing Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
No
>> Test complete.
8R - 56
WIPERS/WASHERS - ELECTRICAL DIAGNOSTICS
LX
B2329-RAIN SENSOR OPTICAL PATH 1 PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
Each optical track (received value) is monitored once a second while the rain sensor is active (WK Intermittent
1-5, LX intermittent 1–6) and compared to a small value. The optical track value must be below this value for
4 minutes (checked once per second) before this DTC will be set. Once the DTC is set, the optical track must
be above the threshold for 4 minutes (checked once per second) before the DTC is cleared.
Possible Causes
RAIN SENSING MODULE
Diagnostic Test
1.
REPLACE THE RAIN SENSOR MODULE
NOTE: Check the contact surface of the RSM to the windshield for Delamination (this will resemble air bub-
bles in the contact area). If Delamination is present, replace the windshield in accordance with the service
information.
With the scan tool read RSM DTCs.
Does the scan tool read: B2329-RAIN SENSOR OPTICAL PATH 1 PERFORMANCE?
Yes
>> Replace the RSM in accordance with the service information.
Perform the BODY VERIFICATION TEST — VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
No
>> Test complete.
LX
WIPERS/WASHERS - ELECTRICAL DIAGNOSTICS
8R - 57
B232A-RAIN SENSOR OPTICAL PATH 2 PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
Each optical track (received value) is monitored once a second while the rain sensor is active (WK Intermittent
1-5, LX intermittent 1-6) and compared to a small value. The optical track value must be below this value for
4 minutes (checked once per second) before this DTC will be set. Once the DTC is set, the optical track must
be above the threshold for 4 minutes (checked once per second) before the DTC is cleared.
Possible Causes
RAIN SENSING MODULE
Diagnostic Test
1.
REPLACE THE RAIN SENSOR MODULE
NOTE: Check the contact surface of the RSM to the windshield for Delamination (this will resemble air bub-
bles in the contact area). If Delamination is present, replace the windshield in accordance with the service
information.
With the scan tool read RSM DTCs.
Does the scan tool read: B232A-RAIN SENSOR OPTICAL PATH 2 PERFORMANCE?
Yes
>> Replace the RSM in accordance with the service information.
Perform the BODY VERIFICATION TEST — VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
No
>> Test complete.
8R - 58
WIPERS/WASHERS - ELECTRICAL DIAGNOSTICS
LX
B232B-RAIN SENSOR OPTICAL PATH 3 PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
Each optical track (received value) is monitored once a second while the rain sensor is active (WK Intermittent
1-5, LX intermittent 1-6) and compared to a small value. The optical track value must be below this value for
4 minutes (checked once per second) before this DTC will be set. Once the DTC is set, the optical track must
be above the threshold for 4 minutes (checked once per second) before the DTC is cleared.
Possible Causes
RAIN SENSING MODULE
Diagnostic Test
1.
REPLACE THE RAIN SENSOR MODULE
NOTE: Check the contact surface of the RSM to the windshield for Delamination (this will resemble air bub-
bles in the contact area). If Delamination is present, replace the windshield in accordance with the service
information.
With the scan tool read RSM DTCs.
Does the scan tool read: B232B-RAIN SENSOR OPTICAL PATH 3 PERFORMANCE?
Yes
>> Replace the RSM in accordance with the service information.
Perform the BODY VERIFICATION TEST — VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
No
>> Test complete.
LX
WIPERS/WASHERS - ELECTRICAL DIAGNOSTICS
8R - 59
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