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 ErrorDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Latch Pawl Switch Signal | B153A 08 | B153A 08 | 1 | -- |
Latch Ratchet Switch Signal | B153A 08 | B153A 08 | 1 | -- |
Latch Sector Switch Signal | B153A 08 | B153A 08 | 1 | -- |
Liftgate Ajar Switch Signal | B396F 06 | B396F 06 | B396F 0B | -- |
Liftgate Latch Motor Close Control | B2495 02 | B2495 04 | B2495 01 | -- |
Liftgate Latch Motor Open Control | B2495 02 | B2495 04 | B2495 01 | -- |
Liftgate Motor Close Control | B396A 02 | B396A 04 | B396A 01 | -- |
Liftgate Motor Disengage Control | B396B 02 | B396B 04 | B396B 01 | -- |
Liftgate Motor Engage Control | B396B 02 | B396B 04 | B396B 01 | -- |
Liftgate Motor Open Control | B396A 02 | B396A 04 | B396A 01 | -- |
Liftgate Position Sensor Reference Voltage | B153E 02 | B153E 05 | B153E 05 | -- |
Liftgate Position Sensor Signal 1 | B153E 08 | B153E 08 | B153E 08 | -- |
Liftgate Position Sensor Signal 2 | B153E 08 | B153E 08 | B153E 08 | -- |
Liftgate Tape Switch Signal | B153F 02 | B153F 05 | B153F 05 | -- |
Liftgate Full Open Switch Signal | B153B 02 | B153B 05 | B153B 05 | -- |
Open/Close Switch Signal | B2494 02 | 1 | 1 | -- |
Liftgate Full Open Switch Low Reference | -- | B153A 08 | -- | -- |
Liftgate Handle Switch Low Reference | -- | 1 | -- | -- |
Liftgate Position Sensor Low Reference | -- | 1 | -- | -- |
Liftgate Tape Switch Low Reference | -- | B153F 05 | -- | -- |
1. Power Liftgate Malfunction | ||||
Circuit/System Description
When calibrating the liftgate position, the liftgate control module (LGM) is placed in a functional state to learn the liftgate travel limits. DTC B1019 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 LGM, the LGM will exit calibration mode and DTC B1019 will clear. If the LGM does not exit learn mode, DTC B1019 will remain current and indicate a fault. For more detailed information concerning power liftgate operation refer to Liftgate Description and Operation .
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
DTC B1019 will set when the liftgate control module is replaced or reprogrammed.
Actions Taken When the DTC Sets
The liftgate control modules travel limits will be unlearned.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | You issue a scan tool CLEAR DTCs command. |
| • | A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred. |
Diagnostic Aids
Whenever the LGM is disconnected or loses power, the ignition must be cycled OFF then ON.
Reference Information
Schematic Reference
Connector End View Reference
Vehicle Access Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
Perform the Liftgate Calibration Procedure. Refer to Liftgate Calibration Procedure . The liftgate module should learn the travel limits, exit the calibration mode, and DTC B1019 should clear.
| ⇒ | If the liftgate module does not exit learn mode after the calibration attempt, replace the liftgate module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for LGM replacement, setup, and programming
