Only Wireless Control Function is Inoperative [02/2017 - ]: Procedure

1. Check the power door lock operation.

   Refer to OPERATION CHECK [02/2017 - 10/2017] , or refer to OPERATION CHECK [10/2017 - 12/2021] , or refer to OPERATION CHECK [12/2021 - ]

   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 [02/2017 - ] 

Result: 

OK 

See step  2

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

   Refer to OPERATION CHECK [02/2017 - ]

   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 [02/2017 - ] 

Result: 

OK 

See step  3

1. When a known good registered door control transmitter 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 assembly.	A
   Wireless door lock function does not operate.	B

Result: 

B 

See step  5

Result: 

A 

See step  4

1. Inspect the battery capacity.
   1. Remove the battery from the door control transmitter assembly that does not operate (Refer to REMOVAL [02/2017 - ] ). Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative (-) terminal.
      NOTE:

      Do not wrap the lead wire around a terminal, wedge it between the terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.
   NOTE:

   When replacing the transmitter battery, before starting work, remove static electricity that has built up in the body by touching, for example, the vehicle to prevent the door control transmitter assembly from being damaged.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

3. Check the transmitter battery voltage.

   HINT: 

   Measure the transmitter battery voltage while pressing the lock or unlock switch on the door control transmitter assembly.

   Standard Voltage

   Item	Content
   Tester Connection	Transmitter battery positive (+) - Transmitter battery negative (-)
   Condition	Ignition switch off, all doors closed and lock or unlock switch is pressed
   Specified Condition	2.5 to 3.2 V

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DOOR CONTROL TRANSMITTER ASSEMBLY 

Result: 

NG 

REPLACE TRANSMITTER BATTERY. Refer to  REMOVAL [02/2017 - ] 

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

   HINT: 

   • When the door control transmitter 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. Connect the Techstream to the DLC3.
2. Turn the Ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Wireless Diagnosis Mode.

   Body Electrical > Main Body > Utility 

   Tester Display
   Wireless Code Registration

5. Proceed to the next step in accordance with the prompts on the Techstream screen.
6. Check that the system has switched to self-diagnostic mode by checking the interior light output pattern.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Inspect the diagnostic outputs when the door control transmitter assembly switch is pressed. The diagnostic outputs can be checked by the flash patterns of the interior lights.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Result	Proceed to
   Normal wave (light flash pattern) is output.	A
   Unmatching recognition code is output.	B
   No diagnostic outputs.	C

Result: 

A 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [02/2017 - 10/2017]  , or refer to  REMOVAL [10/2017 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - ] 

Result: 

C 

See step  9

Result: 

B 

See step  8

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 [02/2017 - ] 

   OK

   Recognition code can be registered.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (GO TO  OPERATION CHECK [02/2017 - 10/2017]   or  OPERATION CHECK [10/2017 - 12/2021]  ) 

Result: 

NG 

See step  13

1. Prepare the door control transmitter assembly from another vehicle.
2. Press and hold down the door control transmitter assembly switch.
3. Check that an unmatching recognition code is output.

   OK

   Unmatching recognition code is output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DOOR CONTROL (CUT KEY) TRANSMITTER ASSEMBLY 

Result: 

NG 

See step  10

1. Disconnect the M23 door control and tire pressure monitoring system receiver assembly.

   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 chart below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M23-12 (GND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   M23-7 (+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  11

1. Connect the M23 door control and tire pressure monitoring system receiver assembly.
2. Measure the voltage according to the value(s) in the chart 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
   M23-4 (RDA) - Body ground	Ignition switch lock, all doors closed and door control transmitter assembly switch not pressed	11 to 14 V
   	Ignition switch lock, all doors closed and door control transmitter assembly switch pressed	Pulse generation (0 to 12 V)

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY. Refer to  REMOVAL [02/2017 - 10/2017]  , or refer to  REMOVAL [10/2017 - 09/2019]  , or refer to  REMOVAL [09/2019 - ] 

Result: 

OK 

See step  12

1. Disconnect the F15 main body ECU (multiplex network body ECU) connector.
2. Disconnect the M23 door control and tire pressure monitoring system receiver assembly connector.
3. Measure the resistance according to the value(s) in the chart below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M23-4 (RDA) - F15-4 (RDA)	Always	Below 1 Ω
   M23-5 (PRG) - F15-5 (PRG)	Always	Below 1 Ω
   M23-4 (RDA) - Body ground	Always	10 kΩ or higher
   M23-5 (PRG) - Body ground	Always	10 kΩ or higher
   F15-4 (RDA) - Body ground	Always	10 kΩ or higher
   F15-5 (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  13

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

   Refer to REMOVAL [02/2017 - 10/2017] , or refer to REMOVAL [10/2017 - 09/2019] , or refer to REMOVAL [09/2019 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  14

1. Perform the Registration procedure.

   Refer to REGISTRATION [02/2017 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  15

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

   OK

   Doors can be locked and unlocked by the door control transmitter 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 [02/2017 - 10/2017]  , or refer to  REMOVAL [10/2017 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - ]