2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 289
Action Taken When the DTC Sets
The BCM will ignore the input from the lockout switch and the child lockout feature will be inoperative.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/Description and Operation)
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 Verification
Ignition ON, doors locked, command the child lockout function by pressing the child lockout switch, the interior rear door handles should become
inoperative and the lockout indicator should illuminate.
Circuit/System Testing
1. Ignition OFF, disconnect the X1 harness connector at the A20 radio/HVAC control.
2. Ignition ON, test for greater than 10 V between the signal circuit terminal 5 and ground.
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, replace
the BCM.
3. If all circuits test normal, test or replace the A20 radio/HVAC control.
Component Testing
Child Lockout Switch Test
1. Ignition OFF, disconnect the X1 harness connector at the A20 radio/HVAC control.
2. Test for infinite resistance between the signal terminal 5 and the ground terminal 17 with the switch in the open position.
瀚慖f less than the specified value, replace the A20 radio/HVAC control.
3. Test for less than 2 ohm between the signal terminal 5 and the ground terminal 17 while holding the switch in the closed position.
瀚慖f greater than the specified range, replace the A20 radio/HVAC control.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM and the radio/HVAC control replacement, setup
