DOOR / HATCH POWER BACK DOOR SYSTEM Power Back Door cannot be Operated Using Any Switch
DESCRIPTION
The power back door is controlled by the multiplex network door ECU and drives the back door motor.
If the power back door does not operate using any of the operations, a malfunction related to the power back door operation conditions or multiplex network door ECU are possible causes.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
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.
·Inspect fuses for circuits related to this system before performing the following inspection procedure.
·If the multiplex network door ECU has been replaced, or if any of the connectors has been disconnected, initialize the power back door system.
·If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.
·If the 2-step unlock function is enabled via customize settings, only the driver door unlocks when the first unlock operation is performed and the power back door does not operate as all the doors are not unlocked.
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 |
- Result:
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
Read the customize setting "Unlock 2 Opeartion" according to the display on the GTS.
w/ Smart Entry and Start System:
w/o Smart Entry and Start System:
- Result:
Result Proceed to The customize setting is "OFF" A The customize setting is "ON" B
A
B
w/ Smart Entry and Start System:
w/o Smart Entry and Start System:
Read the customize setting "Unlock key Twice" according to the display on the GTS.
- Result:
Result Proceed to The customize setting is "OFF" A The customize setting is "ON" B
A
B
Check for DTCs.
- Body Electrical > Back Door > Trouble Codes
- 50001 489
- OK:
DTC is not output
- Result:
Proceed to OK NG
OK
NG
Read the Data List according to the display on the GTS.
- Body Electrical > Back Door > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Half Latch Switch Latch switch signal ON or OFF Back door opened condition: ON
Back door closed condition: OFF- Closer Position Switch Initial switch signal ON or OFF Back door opened condition: ON
Back door closed condition: ON- Pawl Switch Pawl switch signal ON or OFF Back door opened condition: OFF
Back door closed condition: OFF- Courtesy Switch Back door courtesy switch signal ON or OFF Back door opened condition: ON
Back door closed condition: OFF-
- Body Electrical > Back Door > Data List
-
Tester Display Half Latch Switch Closer Position Switch Pawl Switch Courtesy Switch - 50003 489 1003,1005,1017,1018
- Result:
Result Proceed to The ON/OFF switches normally depending on the back door condition (open or close). A The ON/OFF not switches normally depending on the back door condition (open or close). B
A
B
Check the power back door system condition.
- Result:
Result Proceed to Power back door does not operate normally A Power back door operates normally B
A
B
Operation check
Check that the shift position indicator light in the combination meter assembly operates correctly in accordance with the operation of the shift lever.
Confirm that the speedometer indicates 0 km/h when the vehicle is stopped.
- OK:
The meter and gauge system operates correctly.
- Result:
Proceed to OK NG
OK
NG
for GTMC Made:
for SFTM Made:
Disconnect the R28, R29 and R30 multiplex network door ECU connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R28-4 (GND) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition R30-7 (ECUB) - Body ground Ignition switch off 11 to 14 V R29-5 (B) - Body ground Ignition switch off 11 to 14 V R30-9 (IG) - Body ground Ignition switch off Below 1 V Ignition switch ON 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
Read the Data List according to the display on the GTS.
- Body Electrical > Back Door > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note PBD Main Switch Power back door ON/OFF signal ON or OFF Current customize setting displayed - Door Lock Signal Back door condition signal Lock or Unlock Lock: Back door locked
Unlock: Back door unlocked-
- Body Electrical > Back Door > Data List
-
Tester Display PBD Main Switch Door Lock Signal - 50003 489 1037,1051
- Result:
Result Proceed to Either item is normal A "PBD Main SW" item does not switch to "ON" or "OFF" according to main switch operation B "Door Lock Signal" item does not switch to "Lock" or "Unlock" according to operation to lock or unlock all doors C
A
B
for GTMC Made:
for SFTM Made:
C
Read the Data List according to the display on the GTS.
- Body Electrical > Back Door > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note PBD Touch Sensor RH Power back door sensor assembly RH signal ON, OFF or Open ON: Power back door sensor assembly RH pressed
OFF: Power back door sensor assembly RH not pressed
Open: Power back door sensor assembly RH circuit open- PBD Touch Sensor LH Power back door sensor assembly LH signal ON, OFF or Open ON: Power back door sensor assembly LH pressed
OFF: Power back door sensor assembly LH not pressed
Open: Power back door sensor assembly LH circuit open-
- Body Electrical > Back Door > Data List
-
Tester Display PBD Touch Sensor RH PBD Touch Sensor LH - 50003 489 1057,1058
- Result:
Result Proceed to On the GTS screen, ON or OFF is displayed accordingly A On the GTS screen, ON or OFF is not displayed accordingly or Open is displayed for power back door sensor assembly RH B On the GTS screen, ON or OFF is not displayed accordingly or Open is displayed for power back door sensor assembly LH C
A
B
C
- Result:
Proceed to OK NG
OK
NG
Disconnect the R8 power back door sensor assembly RH connector.
Disconnect the R31 multiplex network door ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R8-1 (OSR) - R31-8 (OSR) Always Below 1 Ω R8-2 (OSRE) - R31-9 (OSE) Always Below 1 Ω R8-1 (OSR) or R31-8 (OSR) - Body ground Always 10 kΩ or higher R8-2 (OSRE) or R31-9 (OSE) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG
Disconnect the R9 power back door sensor assembly LH connector.
Disconnect the R31 multiplex network door ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R9-1 (OSL) - R31-1 (OSL) Always Below 1 Ω R9-2 (OSLE) - R31-9 (OSE) Always Below 1 Ω R9-1 (OSL) or R31-1 (OSL) - Body ground Always 10 kΩ or higher R9-2 (OSLE) or R31-9 (OSE) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the G167 main body ECU (multiplex network body ECU) connector.
Disconnect the R30 multiplex network door ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition G167-7 (LSBO) - R30-11 (LIB) Always Below 1 Ω G167-13 (LSBO) or R30-11 (LIB) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *a | Component with harness connected
(Main Body ECU [Multiplex Network Body ECU]) |
Remove the main body ECU (multiplex network body ECU) with the connector(s) still connected.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition G167-7 (LSBO) - Body ground Back door unlocked Below 1 V
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG
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Disconnect the R28 multiplex network door ECU connector.
Disconnect the R13 back door lock with courtesy light switch assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R28-2 (DC+) - R13-2 (M+) Always Below 1 Ω R28-6 (DC-) - R13-1 (M-) Always Below 1 Ω R28-2 (DC+) or R13-2 (M+) - Body ground Always 10 kΩ or higher R28-6 (DC-) or R13-1 (M-) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG