Power Back Door Cannot Be Operated Using Any Switch

DOOR / HATCH: POWER BACK DOOR SYSTEM: Power Back Door cannot be Operated Using Any Switch
- Power Back Door cannot be Operated Using Any Switch

DESCRIPTION

When the power back door cannot be operated using any switch, one of the following may be the cause: 1) initialization of the power back door ECU, or a malfunction in the 2) power back door touch sensor circuit, 3) back door closer system, 4) meter/gauge system, 5) main body ECU (instrument panel junction block LH), or 6) power back door drive unit (power back door ECU).

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INITIALIZE POWER BACK DOOR ECU

(a) Check that the power back door drive unit (power back door ECU) can be initialized Initialization.

NEXT -- Continue to next step.

2. CHECK POWER BACK DOOR SYSTEM

(a) Check the power back door system operation.

OK:

Power back door system operates normally.

NG -- CHECK BACK DOOR CLOSER SYSTEM

OK -- END

3. CHECK BACK DOOR CLOSER SYSTEM

(a) Check the back door closer system operation Operation Check.

NG -- GO TO BACK DOOR CLOSER SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

4. CHECK COMBINATION METER

(a) Check the A/T shift position indicator operation.

(b) Check that the speedometer indicates 0 mph when the vehicle is stopped and the engine idling.

NG -- GO TO METER / GAUGE SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

5. CHECK DTC OUTPUT

(a) Check for the DTCs Power Back Door System.

Result





C -- GO TO DTC CHART Back Door Closer System

B -- GO TO DTC CHART Back Door Closer System
A -- Continue to next step.

6. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List /

(e) According to the display on the Techstream, read the Data List.

Main Body





OK:

The back door functions as specified in the normal condition.

NG -- REPLACE MAIN BODY ECU
OK -- Continue to next step.

7. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Back Door / Data List /

(e) According to the display on the Techstream, read the Data List.

Back Door





OK:

The power back door touch sensor functions as specified in the normal condition.

NG -- GO TO OTHER FLOW CHART (TOUCH SENSOR CIRCUIT) Component Tests and General Diagnostics

OK -- REPLACE POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU) Removal