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) power back door main switch circuit, 4) back door closer system, 5) meter/gauge system, 6) main body ECU (instrument panel junction block LH), or 7) 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
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
OK -- Continue to next step.

5. CHECK DTC OUTPUT
(a) Check for the DTCs Power Back Door System.

Result





C -- GO TO DTC CHART
B -- GO TO DTC CHART
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)
OK -- Continue to next step.

8. 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 main switch functions as specified in the normal condition.

NG -- INSPECT POWER BACK DOOR MAIN SWITCH
OK -- REPLACE POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU)
9. INSPECT POWER BACK DOOR MAIN SWITCH





(a) Remove the power back door main switch Removal.
(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Reinstall the power back door main switch.

NG -- REPLACE POWER BACK DOOR MAIN SWITCH
OK -- Continue to next step.

10. CHECK HARNESS AND CONNECTOR (MAIN SWITCH - BACK DOOR ECU AND BODY GROUND)





(a) Disconnect the H69 switch connector.
(b) Disconnect the O30 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the switch and ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU)