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 (power back door motor unit), 2) power back door touch sensor circuit, 3) power slide door main switch circuit, 4) back door closer system, 5) meter/gauge system, 6) main body ECU or 7) power back door ECU (power back door motor unit).

WIRING DIAGRAM





INSPECTION PROCEDURE

CAUTION:
The power back door system uses a CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How to Proceed With Troubleshooting. Troubleshoot the power back door system after confirming that the communication system is functioning properly.

PROCEDURE

1. INITIALIZE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT)

(a) Perform the initialization for the power back door ECU (power back door motor unit) Initialization.

NEXT -- Continue to next step.

2. CHECK POWER BACK DOOR SYSTEM

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

OK:

Power back door system operates normally.

NG -- CHECK BACK DOOR CLOSER SYSTEM

OK -- END

3. CHECK BACK DOOR CLOSER SYSTEM

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

OK:

Back door closer system operates normally.

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

4. CHECK COMBINATION METER ASSY

(a) Check shift position indicator operation and that the speedometer indicates 0 km/h (0 mph) when the vehicle is stopped with the engine idling.

OK:

Combination meter operates normally.

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

5. CHECK POWER DOOR LOCK OPERATION (BASIC FUNCTION)

(a) Check the power door lock function Operation Check.

OK:

The power door lock basic function operates normally.

NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

6. CHECK DTC OUTPUT

(a) Check for DTCs Power Back Door System.

Result





E -- GO TO OTHER FLOW CHART (B2251) B2251

D -- GO TO OTHER FLOW CHART (B2250) B2250

C -- GO TO OTHER FLOW CHART (B2225) B2225

B -- GO TO OTHER FLOW CHART (B2222) B2222
A -- Continue to next step.

7. READ VALUE USING TECHSTREAM (BACK DOOR OPEN)

(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) Check the Data List to determine if the back door lock assembly functions properly.

Main Body (Main Body ECU)





OK:

The back door functions as specified in the normal condition column.

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

8. READ VALUE USING TECHSTREAM (DOOR LOCK STATUS)

(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) Check the Data List to determine if the back door lock assembly functions properly.

Back Door (Power Back Door ECU)





OK:

The back door functions as specified in the normal condition column.

NG -- REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) Removal
OK -- Continue to next step.

9. READ VALUE USING TECHSTREAM (PBD TOUCH SENSOR)

(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) Check the Data List to determine if the power back door touch sensor functions properly.

Back Door (Power Back Door ECU)





Result





B -- GO TO OTHER FLOW CHART (TOUCH SENSOR CIRCUIT) Component Tests and General Diagnostics
A -- Continue to next step.

10. READ VALUE USING TECHSTREAM (PBD MAIN SW)

(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) Check the Data List to determine if the power slide door main switch functions properly.

Back Door (Power Back Door ECU)





OK:

The power slide door main switch functions as specified in the normal condition column.

NG -- INSPECT POWER SLIDE DOOR MAIN SWITCH

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

11. INSPECT POWER SLIDE DOOR MAIN SWITCH

(a) Remove the power slide door main switch on the instrument panel Removal.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





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

12. CHECK HARNESS AND CONNECTOR (POWER SLIDE DOOR MAIN SWITCH - POWER BACK DOOR ECU)

(a) Disconnect the D1 power slide door main switch connector and K14 power back door ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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