B153E

DTC B153E

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 B153E 02
Liftgate Position Sensor Signal Circuit Short to Ground

DTC B153E 05
Liftgate Position Sensor Signal Circuit Short to Battery or Open





DIAGNOSTIC FAULT INFORMATION

CIRCUIT/SYSTEM DESCRIPTION
The power liftgate control module (PLGM) continuously monitors power liftgate operation and calculates its location and direction of travel using 2 Hall effect sensors that are part of the gear motor assembly. The Hall effect sensors are 5-volt 3-wire sensors and are supplied with a 5-volt power, ground and signal circuits from the PLGM. The Hall effect sensor signal circuits are referenced from voltage within the PLGM and pulsed low by the Hall effect sensors.

CONDITIONS FOR RUNNING THE DTC
System voltage to the liftgate control module must be 9-16 volts.

CONDITIONS FOR SETTING THE DTC

B153E 02
The PLGM detects a short to ground in the liftgate motor assembly position sensor circuit

B153E 05
The PLGM detects a short to voltage or an open/high resistance in the liftgate motor assembly position sensor circuit.

ACTION TAKEN WHEN THE DTC SETS
The power liftgate system will be disabled.

CONDITIONS FOR CLEARING THE DTC
- The DTC will be current for as long as the fault is present.
- When the fault is no longer present, the DTC will be a history status code.

CIRCUIT/SYSTEM TESTING
1. Ignition ON, observe the voltage between the sensor 1 terminal 9 and ground while manually opening and closing the liftgate. The voltage should vary while opening and closing the liftgate.
- If the voltage does not vary, check the sensor 1 signal circuit terminal 9 for a short to ground, open/high resistance or a short to voltage.
2. Observe the voltage between the sensor 2 terminal 10 and ground while manually opening and closing the liftgate. The voltage should vary while opening and closing the liftgate.
- If the voltage does not vary, check the sensor 2 signal circuit terminal 10 for a short to ground, open/high resistance or a short to voltage. If the circuit tests normal, replace the PLGM.
3. If all circuits test normal, replace the liftgate motor assembly.

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

Programming and Relearning. Programming and Relearning