Symptom Related Diagnostic Procedures

POWER LIFTGATE SYSTEM
In order to obtain conclusive testing of the power liftgate system, the Controller Area Network (CAN) data bus, and all of the electronic modules that provide inputs to, or receive outputs from the power liftgate system components must be checked. Any diagnosis of the power liftgate system should begin with, the use of a scan tool.

NOTE: Before any testing of the power liftgate system is attempted, the battery should be fully-charged.

Symptom Driven Power Liftgate System Diagnosis Table Part 1:

Symptom Driven Power Liftgate System Diagnosis Table Part 2:

Symptom Driven Power Liftgate System Diagnosis Table Part 3:

Symptom Driven Power Liftgate System Diagnosis Table Part 4:

Symptom Driven Power Liftgate System Diagnosis Table Part 5:

Following are quick reference diagnostic tables to help when diagnosing and testing the power liftgate system.