The main body ECU (multiplex network body ECU) receives signals from the back door opener switch assembly. Then, the main body ECU (multiplex network body ECU) activates the back door lock motor.
When using the GTS with the vehicle ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.
Inspect the fuses for circuits related to this system before performing the following procedure.
The power door lock control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.
If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin (w/ Smart Entry and Start System).
Perform the Active Test according to the display on the GTS.
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Trunk Lid / Back Door Open | Back door lock motor | OFF or ON | - |
| Tester Display |
|---|
| Trunk Lid / Back Door Open |
The back door lock with courtesy light switch assembly unlatches when ON is selected.
| Result | Proceed to |
|---|---|
| OK (w/ Entry Function) | A |
| OK (w/o Entry Function) | B |
| NG | C |
A
for HV Model:
for Gasoline Model:
B
C
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the R10 back door opener switch assembly connector.
Disconnect the G169 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 |
|---|---|---|
| R10-3 (UL) - G169-19 (BDSU) | Always | Below 1 Ω |
| R10-2 (E) - Body ground | Always | Below 1 Ω |
| R10-3 (UL) or G169-19 (BDSU) - Other terminals and body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
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Disconnect the R11 back door lock with courtesy light switch assembly connector.
Disconnect the 6F power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| R11-1 (ACT+) - 6F-39 | Always | Below 1 Ω |
| R11-3 (D+) - 6F-2 | Always | Below 1 Ω |
| R11-2 (ACT-) - Body ground | Always | Below 1 Ω |
| R11-1 (ACT+) or 6F-39 - Other terminals and body ground | Always | 10 kΩ or higher |
| R11-3 (D+) or 6F-2 - Other terminals and body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A-19 (BCTY) - 6F-2 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the power distribution box assembly connectors.
| *a | Front view of wire harness connector
(to Power Distribution Box Assembly) |
- | - |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| 6H-1 - Body ground | Ignition switch off | 11 to 14 V |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 6B-36 - Body ground | Always | Below 1 Ω |
| 6C-41 - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 6F-39 - 6B-36 | Auxiliary battery voltage applied to terminals 6H-1 and A-5 | 10 kΩ or higher |
| 6F-39 - 6B-36 | Auxiliary battery voltage not applied to terminals 6H-1 and A-5 | Below 1 Ω |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 6F-39 - Auxiliary battery negative (-) terminal | Auxiliary battery voltage applied to terminals 6H-1 and A-5 | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG