The power back door control switch sends a signal to the multiplex network door ECU using CAN communication via the main body ECU (multiplex network body ECU).
If the multiplex network door ECU has been replaced, or if any of the connectors has been disconnected, initialize the power back door system.
First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.
If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.
Operate the multi-information display and check the customization status.
| Display | Description | Default | Setting | Relevant ECU |
|---|---|---|---|---|
| System Settings | Function that enables or disables the power back door operation. | On | On or Off | Multiplex network door ECU |
| Result | Proceed to |
|---|---|
| Customization item is "On" (power back door system operation is possible) | A |
| Customization item is "Off" (power back door system operation is prohibited) | B |
A
B
Check the power back door system.
| Result | Proceed to |
|---|---|
| Power back door system operates normally | A |
| Power back door system does not operate normally | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Back Door Operation Switch (Instrument) | Power back door control switch signal | ON or OFF | ON: Power back door control switch on
OFF: Power back door control switch off |
- |
| Tester Display |
|---|
| Back Door Operation Switch (Instrument) |
The GTS display changes correctly in response to the switch operation.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the G11 power back door control switch connector.
Disconnect the G168 main body ECU (multiplex network body ECU) connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G11-5 (MSW) - G168-21(PBDS) | Always | Below 1 Ω |
| G11-2 (MSE) - Body ground | Always | Below 1 Ω |
| G11-5 (MSW) or G168-21 (PBDS) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG