2010 Cadillac CTS Sedan AWD V6-3.6L Page 221
Liftgate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Description and Operation/Liftgate
Description and Operation)
Electrical Information Reference
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Liftgate Front Control Switch parameter while switching the mode/release select switch between Max and OFF.
The parameter should change from Inactive to Active.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the interior liftgate control switch.
2. Test for less than 1 ohm 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 driver
door lock/window switch.
3. Ignition ON, test for greater than 10V between the signal circuit terminal 3 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 liftgate module.
4. If all circuits test normal, test or replace the interior liftgate control switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the interior liftgate control switch.
2. Test for infinite resistance between the signal terminal 4 and the low reference terminal 1 with the liftgate open switch in the inactive
position.
瀚慖f not the specified value, replace the interior liftgate control switch.
3. Test for less than 3 ohm between the signal terminal 4 and the low reference terminal 3 with the switch in the active position.
瀚慖f greater than the specified range, replace the interior liftgate control switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Rear Compartment Lid Release Switch Replacement (Sedan) (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk /
Liftgate Switch/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for LGM and driver door lock/window switch
replacement, setup and programming
B396E
DTC B396E
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.
