Only Wireless Control Function is Inoperative [03/2017 - ]: Procedure

1. Check the power door lock operation.

   Refer to OPERATION CHECK [03/2017 - ]

   OK

   Locked doors unlock.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ] 

Result: 

OK 

See step  2

1. Check that the key reminder warning buzzer operates properly.

   Refer to OPERATION CHECK [03/2017 - ]

   OK

   Key reminder warning buzzer operates properly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO KEY REMINDER WARNING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ] 

Result: 

OK 

See step  3

1. When a known good registered door control transmitter module set sub-assembly is used, check that the wireless functions operate properly.

   Result

   Result	Proceed to
   Wireless door lock/unlock function operates properly with a known good door control transmitter module set sub-assembly	A
   Wireless door lock/unlock function does not operate	B

Result: 

B 

See step  5

Result: 

A 

See step  4

1. Inspect the transmitter battery capacity.

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DOOR CONTROL TRANSMITTER MODULE SET SUB-ASSEMBLY 

Result: 

NG 

REPLACE TRANSMITTER BATTERY. Refer to  REPLACEMENT [03/2017 - ] 

1. Bring the door control transmitter module set sub-assembly near the door control and tire pressure monitoring system receiver assembly, and perform wireless operation check.

   HINT: 

   • When the door control transmitter module set assembly is brought near the door control and tire pressure monitoring system receiver assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
   • If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

   OK

   Wireless functions operate properly.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (AFFECTED BY WAVE INTERFERENCE) 

Result: 

NG 

See step  6

1. Switch to self-diagnostic mode.

   Refer to DIAGNOSIS SYSTEM [03/2017 - ] 

2. Check self-diagnostic mode.

   Refer to DIAGNOSIS SYSTEM [03/2017 - ] 

   Result

   Result	Proceed to
   Normal pattern (wireless door lock buzzer output pattern) is output	A
   Unmatching recognition code is output	B
   No diagnostic output	C

Result: 

A 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2017 - 06/2017]  , or refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ] 

Result: 

C 

See step  8

Result: 

B 

See step  7

1. Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered.

   Refer to REGISTRATION [03/2017 - ] 

   OK

   Recognition code can be registered.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (GO TO OPERATION CHECK). Refer To  OPERATION CHECK [03/2017 - 06/2017]  , or Refer To  OPERATION CHECK [06/2017 - ]  

Result: 

NG 

See step  12

1. Prepare a door control transmitter module set sub-assembly from another vehicle.
2. Press and hold a door control transmitter module set sub-assembly switch.
3. Check that an unmatching recognition code is output.

   OK

   Unmatching recognition code is output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE DOOR CONTROL TRANSMITTER MODULE SET SUB-ASSEMBLY 

Result: 

OK 

See step  9

1. Disconnect the R120 door control and tire pressure monitoring system receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Door Control and Tire Pressure Monitoring System Receiver Assembly)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R120-12 (GND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   R120-7 (+B) - Body ground	Always	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  10

1. Reconnect the R120 door control and tire pressure monitoring system receiver assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Door Control and Tire Pressure Monitoring System Receiver Assembly)

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   R120-4 (RDA) - Body ground	Procedure:  Remove key from ignition key cylinder Close all doors Press lock or unlock switch of door control transmitter module set sub-assembly	11 to 14 V → pulse generation

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY. Refer to  REMOVAL [03/2017 - 06/2017]  , or refer to  REMOVAL [06/2017 - 09/2019]  , or refer to  REMOVAL [09/2019 - 10/2020]  , or refer to  REMOVAL [10/2020 - ] 

Result: 

NG 

See step  11

1. Disconnect the K53 main body ECU (multiplex network body ECU) connector.
2. Disconnect the R120 door control and tire pressure monitoring system receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R120-4 (RDA) - K53-10 (RDA)	Always	Below 1 Ω
   R120-5 (PRG) - K53-11 (PRG)	Always	Below 1 Ω
   R120-4 (RDA) or K53-10 (RDA) - Body ground	Always	10 kΩ or higher
   R120-5 (PRG) or K53-11 (PRG) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  12

1. Temporarily replace the door control and tire pressure monitoring system receiver assembly with a new or known good one.

   Refer to REMOVAL [03/2017 - 06/2017] , or refer to REMOVAL [06/2017 - 09/2019] , or refer to REMOVAL [09/2019 - 10/2020] , or refer to REMOVAL [10/2020 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  13

1. Perform the Registration procedure.

   Refer to REGISTRATION [03/2017 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  14

1. Check that the doors can be locked and unlocked by the door control transmitter module set sub-assembly lock and unlock switches.

   OK

   Doors can be locked and unlocked by the door control transmitter module set sub-assembly.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2017 - 06/2017]  , or refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ]