The kick door control sensor uses LIN communication and stops sensor output based on the vehicle speed, ignition switch ON (IG) or ON (ACC) signals sent from the multiplex network door ECU.
When the kick door control sensor detects a kick operation, it sends an operation signal to the multiplex network door 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.
Check the smart entry and start system (for Entry Function) first before troubleshooting the power back door system.
for Entry Function, HV Model:
for Entry Function, Gasoline Model:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
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 |
| Hands Free | Function that can be used to set the hands free power back door. | On | On or Off | Multiplex network door ECU |
| Result | Proceed to |
|---|---|
| Customization item is "On" | A |
| Customization item is "Off" | 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
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Turn the ignition switch to ON and wait for at least 10 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTC is output | A |
| DTC is not output | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Kick Sensor Error | Status of the kick door control sensor error | Normal or Error | Normal: Kick door control sensor normal
Error: Kick door control sensor abnormal |
- |
| Tester Display |
|---|
| Kick Sensor Error |
On the GTS, Normal is displayed.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Click hereVehicle Exterior>DOOR / HATCH>KICK SENSOR>REMOVAL202409,999999,_59,_083093,_0417406,RM100000002NG1U,
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Kick Sensor Detection | Status of the kick door control sensor detection | OFF or ON | OFF: Kick door control sensor not detecting a foot
ON: Kick door control sensor detecting a foot |
- |
| Tester Display |
|---|
| Kick Sensor Detection |
On GTS screen, item changes between ON and OFF according to above chart.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the Q7 kick door control sensor connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Q7-6 (LIN) - 6B-37 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Front view of wire harness connector
(to Kick Door Control Sensor) |
Disconnect the kick door control sensor connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Q7-7 (GND) - Body ground | Always | Below 1 Ω |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| Q7-2 (B) - Body ground | Ignition switch off | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the Q7 kick door control sensor connector.
Disconnect the R30 multiplex network door ECU connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Q7-3 (KSOT) - R30-12 (KSIN) | Always | Below 1 Ω |
| Q7-3 (KSOT) or R30-12 (KSIN) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the multiplex network door ECU with the connector(s) still connected.
| *a | Component with harness connected
(Multiplex Network Door ECU) |
| *b | Waveform |
Check the signal waveform according to the condition(s) in the table below.
| Item | Condition |
|---|---|
| Tester Connection | R30-12 (KSIN) - Body ground |
| Tool Setting | 2 V/DIV., 50 ms./DIV. |
| Vehicle Condition | Ignition switch ON, kick door control sensor not detecting a foot |
The waveform displayed is as shown in the illustration.
| Proceed to |
|---|
| OK |
| NG |
OK
Click hereVehicle Exterior>DOOR / HATCH>KICK SENSOR>REMOVAL202409,999999,_59,_083093,_0417406,RM100000002NG1U,
NG