2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 322
5. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 3 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
6. Test for less than 1V between the signal circuit terminal 1 and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage.
7. Ignition OFF, test for infinite resistance between the signal circuit terminal 1 and ground.
瀚慖f not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, test or replace the S43 ultrasonic intrusion
sensor disable switch.
8. Content theft disable switch closed, test for less than 10ohm between the signal circuit terminal 1 and ground.
瀚慖f greater than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, test or replace the S43
ultrasonic intrusion sensor disable switch.
9. Ignition ON, verify the content theft disable indicator is not illuminated.
瀚慖f the indicator is illuminated, test the control circuit terminal 2 for a short to voltage.
10. Install a 3A fused jumper wire between the control circuit terminal 2 and B+. Verify the content theft disable indicator is illuminated.
瀚慖f the indicator is not illuminated, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or
replace the S43 ultrasonic intrusion sensor disable switch.
11. Disconnect the X6 harness connector at the K9 BCM.
12. Test for less than 1V between the serial data circuit terminal 16 and ground.
瀚慖f greater than the specified range, test the serial data circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the serial data circuit terminal 16 and ground.
瀚慖f not the specified value, test the serial data circuit for a short to ground.
14. Test for less than 2ohm between the serial data circuit terminal 16 at the K9 BCM harness connector X6 and the serial data circuit terminal 4
at the B67 ultrasonic intrusion sensor harness connector.
瀚慖f greater than the specified range, test the serial data circuit for an open/high resistance.
15. If all circuits test normal, replace the B67 ultrasonic intrusion sensor. Verify DTC B291B is not set.
瀚慖f the DTC is set, replace the K9 BCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Theft Deterrent Sensor Replacement (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Antitheft Motion
Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
B297B
DTC B297B or B297C
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.
