Fuel Lid Opener does not Operate [12/2023 - ]: Procedure

1. Using the GTS, check that DTCs related to the close tank valve assembly or vapor pressure sensor are not output.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTCs related to the close tank valve assembly or vapor pressure sensor are not output	A
   DTCs related to the close tank valve assembly or vapor pressure sensor are output	B

Result: 

B 

GO TO RELEVANT DIAGNOSTIC TROUBLE CODE PROCEDURE 

for 1Motor-HEV Model: Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ]

for PHEV Model: Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ]

Result: 

A 

See step  2

1. Perform the Active Test according to the display on the GTS.

   Powertrain > Engine > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Activate the Fuel Filler Opener	Activate fuel lid with motor lock assembly	OFF or ON	-

   Powertrain > Engine > Active Test 

   Tester Display
   Activate the Fuel Filler Opener

   OK

   The fuel lid with motor lock assembly operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  13

Result: 

OK 

See step  3

Refer to INSPECTION [09/2023 - ]

Result

Result: 

NG 

REPLACE FUEL LID OPENER SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

Result: 

OK 

See step  4

1. Disconnect the D23 fuel lid opener switch (integration control and panel assembly) connector.
2. Disconnect the B77*1 or B86*2 ECM connector.
   1. *1: for 1Motor-HEV Model
   2. *2: for PHEV Model
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR 1MOTOR-HEV MODEL
   
   

   Tester Connection	Condition	Specified Condition
   D23-3 (B) - B77-51 (FUEL)	Always	Below 1 Ω
   D23-6 (L) - Body ground	Always	Below 1 Ω
   D23-3 (B) or B77-51 (FUEL) - Body ground	Always	10 kΩ or higher

   FOR PHEV MODEL
   
   

   Tester Connection	Condition	Specified Condition
   D23-3 (B) - B86-32 (FUEL)	Always	Below 1 Ω
   D23-6 (L) - Body ground	Always	Below 1 Ω
   D23-3 (B) or B86-32 (FUEL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

Refer to INSPECTION [09/2023 - ]

Result

Result: 

NG 

REPLACE FUEL LID WITH MOTOR LOCK ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

OK 

See step  6

1. Disconnect the J10 fuel lid with motor lock assembly connector.
2. Disconnect the B77*1 or B86*2 ECM connector.
   1. *1: for 1Motor-HEV Model
   2. *2: for PHEV Model
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR 1MOTOR-HEV MODEL
   
   

   Tester Connection	Condition	Specified Condition
   J10-3 (B) - B77-23 (LIDO)	Always	Below 1 Ω
   J10-2 (E) - Body ground	Always	Below 1 Ω
   J10-3 (B) or B77-23 (LIDO) - Body ground	Always	10 kΩ or higher

   FOR PHEV MODEL
   
   

   Tester Connection	Condition	Specified Condition
   J10-3 (B) - B86-37 (LIDO)	Always	Below 1 Ω
   J10-2 (E) - Body ground	Always	Below 1 Ω
   J10-3 (B) or B86-37 (LIDO) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Check the close tank valve assembly or fuel tank vent hose for clogging.

   Refer to ON-VEHICLE INSPECTION [09/2023 - ]

   OK

   The close tank valve assembly or fuel tank vent hose is not clogged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REMOVE THE CLOGGING 

Result: 

OK 

See step  8

for 1Motor-HEV Model: Refer to INSPECTION [09/2023 - ]

for PHEV Model: Refer to INSPECTION [12/2023 - ]

Result

Result: 

NG 

REPLACE CLOSE TANK VALVE ASSEMBLY 

for 1Motor-HEV Model: Refer to REMOVAL [09/2023 - ]

for PHEV Model: Refer to REMOVAL [12/2023 - ]

Result: 

OK 

See step  9

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for 1Motor-HEV Model	A
   for PHEV Model	B

Result: 

B 

See step  12

Result: 

A 

See step  10

1. Replace the vapor pressure sensor with a new or known good one.

   Refer to REMOVAL [09/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  11

1. Check the fuel lid opener operation.

   Refer to OPERATION CHECK [09/2023 - ] 

   OK

   Fuel lid opener operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (VAPOR PRESSURE SENSOR WAS DEFECTIVE) 

Result: 

NG 

REPLACE ECM 

for 1Motor-HEV Model: Refer to REMOVAL [09/2023 - ]

for PHEV Model: Refer to REMOVAL [12/2023 - ]

1. Replace the fuel pressure sensor with a new or known good one.

   Refer to REMOVAL [12/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  11

Refer to INSPECTION [09/2023 - ]

Result

Result: 

NG 

REPLACE FUEL LID WITH MOTOR LOCK ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

OK 

See step  14

1. Disconnect the J10 fuel lid with motor lock assembly connector.
2. Disconnect the J48 power distribution box assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J10-1 (B) - J48-29	Always	Below 1 Ω
   J10-2 (E) - Body ground	Always	Below 1 Ω
   J10-1 (B) or J48-29 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  15

1. Disconnect the B58 power distribution box assembly connector.
2. Disconnect the C27*1 or C86*2 ECM connector.
   1. *1: for 1Motor-HEV Model
   2. *2: for PHEV Model
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR 1MOTOR-HEV MODEL
   
   

   Tester Connection	Condition	Specified Condition
   B58-16 - C27-15 (FREL)	Always	Below 1 Ω
   B58-16 or C27-15 (FREL) - Body ground	Always	10 kΩ or higher

   FOR PHEV MODEL
   
   

   Tester Connection	Condition	Specified Condition
   B58-16 - C86-32 (FREL)	Always	Below 1 Ω
   B58-16 or C86-32 (FREL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  16

1. Disconnect the B58, B57 and D62 power distribution box assembly connectors.
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   B57-1 - Body ground	Ignition switch off	11 to 14 V
   B58-1 - Body ground	Ignition switch ON	11 to 14 V
   	Ignition switch off	Below 1 V

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D62-36 - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  17

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the power distribution box assembly.

   Refer to REMOVAL [09/2023 - ]

2. Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

   Refer to REMOVAL [09/2023 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B57-1 - J48-29	Voltage applied between terminals B58-1 and B58-16	Below 1 Ω
   B57-1 - J48-29	Voltage not applied between terminals B58-1 and B58-16	10 kΩ or higher
   D62-36 - J48-29	Voltage not applied between terminals B58-1 and B58-16	Below 1 Ω
   D62-36 - J48-29	Voltage applied between terminals B58-1 and B58-16	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

for 1Motor-HEV Model: Refer to REMOVAL [09/2023 - ]

for PHEV Model: Refer to REMOVAL [12/2023 - ]

Result: 

NG 

REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to  REMOVAL [09/2023 - ]