2010 Cadillac CTS Sedan AWD V6-3.6L Page 221

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.