B2730

DTC B2730

DIAGNOSTIC INSTRUCTIONS
- Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
- Review Strategy Based Diagnosis for an overview of the diagnostic approach.
- Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC DESCRIPTOR

DTC B2730
Interior Trunk/Hatch/Liftglass Release Sw Circuit




DIAGNOSTIC FAULT INFORMATION

CIRCUIT/SYSTEM DESCRIPTION
Pressing the I/P switch assembly closes a contact providing a ground for the Liftgate Open circuit. The power liftgate module (PLGM) will detect the voltage drop and command the liftgate to open or close depending upon the position of the liftgate.

CONDITIONS FOR RUNNING THE DTC
Battery voltage must be between 9-16 volts.

CONDITIONS FOR SETTING THE DTC
This DTC will set when the LGM detects a fault in the Liftgate Open circuit.

ACTION TAKEN WHEN THE DTC SETS
- The BCM stores the DTC to memory.
- The lift switch will be inoperative.

CONDITIONS FOR CLEARING THE DTC
- This DTC will change from current to history when the fault is no longer present.
- A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
- The technician issues a scan tool CLEAR DTCs command.

CIRCUIT/SYSTEM VERIFICATION
Ignition ON, observe the Int Trunk/Liftglass Sw parameter while pressing the I/P Switch Assembly. The reading should change between Active and Inactive.

CIRCUIT/SYSTEM TESTING
1. Ignition OFF, disconnect the harness connector at the I/P Switch.
2. Ignition ON, verify the scan tool Int Trunk/Liftglass Sw is Inactive.
- If not the specified value, test the signal circuit terminal 7 for a short to ground. If the circuit tests normal, replace the PLGM.
3. Install a 3A fused jumper wire between the signal circuit terminal 7 and ground. Verify the scan tool Int Trunk/Liftglass Sw is Active.
- If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PLGM.
4. If all circuits test normal, test or replace the I/P Switch.

REPAIR INSTRUCTIONS
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Programming and Relearning. Programming and Relearning