2010 Cadillac Truck SRX AWD V6-3.0L Page 341
Circuit/System Testing
Driver Window Switch Malfunction
1. Ignition OFF, disconnect the harness connector at the S79D window switch-driver.
2. Ignition ON, verify that the scan tool Driver Window Main Control Down Switch parameter is Inactive.
瀚慖f not the specified value, test the control circuit terminal 3 for a short to ground. If the circuit tests normal, test or replace the M74D
window motor-driver.
3. Verify that the scan tool Driver Window Main Control Up Switch parameter is Inactive.
瀚慖f not the specified value, test the control circuit terminal 6 for a short to ground. If the circuit tests normal, test or replace the M74D
window motor-driver.
4. Verify that the scan tool Driver Window Main Control Express Switch parameter is Inactive.
瀚慖f not the specified value, test the control circuit terminal 2 for a short to ground. If the circuit tests normal, test or replace the M74D
window motor-driver.
5. If all circuits test normal, test or replace the S79D window switch-driver.
Passenger Switch Window Malfunction
1. Ignition OFF, disconnect the harness connector at the S79P window switch-passenger.
2. Ignition ON, test for greater than 10V between the signal circuit terminal listed below and ground:
* Signal circuit terminal 6
* Signal circuit terminal 7
* Signal circuit terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or
replace the M74P window motor-passenger.
3. If all circuits test normal, test or replace the S79P window switch-passenger.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Side Door Window and Multifunction Switch Replacement (See: Windows and Glass/Windows/Service and Repair/Front Side Door
Window and Multifunction Switch Replacement)
* Rear Side Door Window Switch Replacement (See: Windows and Glass/Windows/Service and Repair/Rear Side Door Window Switch
Replacement)
* Rear Side Door Window Regulator Motor Replacement (See: Windows and Glass/Windows/Service and Repair/Rear Side Door Window
Regulator Motor Replacement)
B318A
DTC B316B, B317A, B318A, or B319A
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 Descriptors
DTC B316B 00
- Driver Window Switch
DTC B316B 02
- Driver Window Switch Short to Ground
DTC B316B 39
- Driver Window Switch Internal Malfunction
