Diagnosis System

ENGINE HOOD / DOOR: BACK DOOR CLOSER SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

1. DESCRIPTION
(a) The power back door ECU (power back door drive unit) controls the vehicle's back door closer system functions. Back door closer system data and Diagnostic Trouble Code (DTC) can be read through the vehicle's Data Link Connector 3 (DLC3).
When the system seems to be malfunctioning, use Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3
(a) Check the DLC3 General Information.
3. INSPECT BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.