B153E
DTC B153E
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B153E 02
- Liftgate Position Sensor Signal Circuit Short to Ground
DTC B153E 05
- Liftgate Position Sensor Signal Circuit Short to Battery or Open
DTC B153E 08
- Liftgate Position Sensor Signal Circuit Signal Invalid
Diagnostic Fault Information
Circuit/System Description
The liftgate control module (LGM) 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 LGM. The Hall effect sensor signal circuits are referenced from voltage within the LGM and pulsed low by the Hall effect sensors.
Conditions for Running the DTC
The system voltage is 9-18 volts.
Conditions for Setting the DTC
B153E 02
The LGM detects a short to ground in the liftgate motor assembly position sensor circuit.
B153E 05
The LGM detects a short to voltage or an open/high resistance in the liftgate motor assembly position sensor circuit.
B153E 08
The LGM does not detect optical sensor pulses when the liftgate is in motion.
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 DTC.
* A history DTC will clear after 50 ignition cycles.
Diagnostic Aids
Important: Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (Procedures) for the appropriate procedure.
Whenever the LGM loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the LGM.
Reference Information
Schematic Reference
Liftgate Schematics (Liftgate Schematics)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Rear Hatch/Gate Description and Operation (Rear Hatch/Gate Description and Operation)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
Scan Tool Reference
Programming and Relearning (Programming and Relearning) for scan tool information
Circuit/System Verification
1. Ignition ON, doors unlocked, transaxle in Park, enable the power liftgate by pressing the liftgate enable/disable button on the I/P switch assembly.
2. Open the liftgate by pressing the touchpad on the liftgate handle switch. The liftgate should release and power open.
3. Close the liftgate by pressing the liftgate button switch. The liftgate should power close, cinch-in, and latch.
Circuit/System Testing
1. Ignition OFF, disconnect the X3 harness connector at the LGM.
2. Ignition OFF, test for less than 1 ohm between the low reference terminal 11 at the LGM and ground.
• If not the specified range, replace the LGM.
3. Ignition ON, test for 4.8-5.2 volts between 5-volt reference terminal 8 at the LGM and ground.
• If greater than the specified value, replace the LGM.
4. Ignition ON, test for 4.8-5.2 volts are between sensor 1 signal terminal 9 and low reference terminal 11 at the LGM.
• If not within the specified range, replace the LGM.
5. Test for 4.8-5.2 volts between sensor 2 signal terminal 10 and low reference terminal 11 at the LGM.
• If not within the specified range, replace the LGM.
6. If all circuits test normal, test or replace the liftgate motor assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Programming and Relearning (Programming and Relearning) for LGM replacement, setup and programming