For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptor

DTC B1019 00: System Configuration Error

### Circuit/System Description

When calibrating the liftgate position, the liftgate module (LGM) is placed in a functional state to learn the liftgate travel limits. DTC B1019 00 will set automatically as an indicator that the system is in learn mode and not as a fault indicator. Once the travel limits are learned by the liftgate module, the LGM will exit calibration mode. If the LGM does not exit learn mode, DTC B1019 00 will remain current and indicate a fault.

### Conditions for Running the DTC

The system voltage is 9-18 volts.

### Conditions for Setting the DTC

Whenever the LGM is replaced or in learn mode.

### Action Taken When the DTC Sets

The power liftgate system will be disabled.

### Conditions for Clearing the DTC

• | The DTC will be current until the liftgate calibration procedure has been completed.

• | When the calibration procedure has been completed the DTC will be a history DTC.

• | A history DTC will clear after 50 ignition cycles.

### Diagnostic Aids

A new or reprogrammed LGM will be in a locked state and will require an ignition cycle before the calibration procedure can be performed.

### Reference Information

#### Schematic Reference

Liftgate Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Rear Hatch/Gate Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Perform the Liftgate Calibration Procedure . The LGM should learn the travel limits, exit the calibration mode, and B1019 00 should clear.

⇒ | If the LGM does not exit learn mode after the calibration attempt, replace the LGM.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for LGM replacement, setup and programming