2010 Cadillac CTS Sedan AWD V6-3.6L Page 213
commanded.
Circuit/System Testing
B320A 39
Ignition ON, command the appropriate power window DOWN and UP with a scan tool. The power window should go DOWN and UP as
commanded.
If the DTC is current and the power window is inoperative, replace the power window motor.
If the DTC is history and the power window performs the UP and DOWN functions, clear the DTC.
B320A 42
Ignition ON, reprogram the appropriate power window and operate the power window within the conditions for running the DTC, verify the DTC
does not reset.
If the DTC resets, replace the power window motor.
B320A 4B
Ignition ON, command the front window motor fully DOWN by pressing and holding the front window switch for 5 seconds, then command the
front window motor fully UP by lifting and holding the front window switch for 5 seconds.
If the DTC resets, replace the power window motor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Front Side Door Window Regulator Motor Replacement (Sedan/Wagon) (See: Body and Frame/Doors, Hood and Trunk/Doors/Front Door/Front
Door Window Motor/Service and Repair)
B370C
DTC B370C or B370D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B370C 00
- Rain Sensor Intensity Signal Circuit.
DTC B370D 00
- Rain Sensor Mode Control Circuit.
Diagnostic Fault Information
Circuit/System Description
Ignition voltage is supplied to the windshield outside moisture sensor from the body control module (BCM). Whenever the ignition is in the run or
accessory positions, the BCM sends the wiper/washer switch status using a pulse width modulated (PWM) signal through the windshield outside
