2010 Cadillac Truck SRX AWD V6-3.0L Page 611
Conditions for Clearing the DTC
* A current DTC will clear when the fault is no longer present.
* A history DTC will clear after 40 consecutive ignition cycles without a fault present.
Reference Information
Schematic Reference
Remote Function Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry
Transmitter/Diagrams/Electrical Diagrams)
Component Connector End Views
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Keyless Entry System Description and Operation (without ATH) (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless
Entry/Description and Operation/Keyless Entry System (without ATH))Keyless Entry System Description and Operation (with ATH) (See:
Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Description and Operation/Keyless Entry System (with ATH))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the K77 remote control door lock receiver.
2. Ignition OFF, test for less than 20 Ohms between the low reference circuit terminal 1 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K9
BCM.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 4 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. If the circuit tests normal, replace
the K9 BCM.
4. Test for 3-6 V between the serial data circuit terminal 3 and ground.
瀚慖f greater than the specified range, test the serial data circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
瀚慖f less than the specified range, test the serial data circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K9 BCM.
5. Ignition OFF, disconnect the X1 and X2 harness connectors at the K9 BCM.
6. Ignition ON, test for less than 1 V between the serial data circuit terminal 27 and ground.
瀚慖f greater than the specified range, test the serial data circuit for a short to voltage.
7. Ignition OFF, test for infinite resistance between the serial data circuit terminal 27 and ground.
瀚慖f not the specified value, test the serial data circuit for a short to ground.
8. Test for less than 2 Ohms between the K9 BCM serial data circuit terminal 27 X2 and the K77 remote control door lock receiver serial data
circuit terminal 2.
瀚慖f greater than the specified range, test the serial data circuit for an open/high resistance.
9. If all circuits test normal, replace the K77 remote control door lock receiver. Verify DTC B3101 is not set.
瀚慖f the DTC is set, replace the K9 BCM.
