Rear Door LH Entry Lock and Unlock Functions do not Operate [09/2015 - ]: Procedure

1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

   Refer to OPERATION CHECK [09/2015 - 08/2019] , or refer to OPERATION CHECK [08/2019 - ]

   OK

   Door locks operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result: 

OK 

See step  2

1. Check for DTCs.

   Body Electrical > Smart Access > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2015 - 12/2017]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2017 - ] 

Result: 

A 

See step  3

1. Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the rear door outside handle assembly LH and perform an entry function check.

   Refer to OPERATION CHECK [09/2015 - 08/2019] , or refer to OPERATION CHECK [08/2019 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Approximately 0.3 m (0.984 ft.)

   HINT: 

   • Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the rear door outside handle assembly LH.
   • When the electrical key transmitter sub-assembly is brought near the rear door outside handle assembly LH, 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 at certain 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.
   • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
   • If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
   • When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

   Result

   Result	Proceed to
   Entry function does not operate normally	A
   Entry function operates normally	B

Result: 

B 

AFFECTED BY WAVE INTERFERENCE 

Result: 

A 

See step  4

1. Turn the engine switch off.
2. Open and close the rear door LH.
3. With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
4. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the rear door LH.
5. Check that the LED of the electrical key transmitter sub-assembly blinks.
6. Read the Data List according to the display on the Techstream.
7. Touch the unlock sensor on the backside of the front door outside handle assembly (for rear door LH).

   HINT: 

   When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Unlock Sensor (Backside)

   Body Electrical > Smart Access > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Dr-Door Touch Sensor	Rear door LH touch sensor (unlock sensor)	ON or OFF	ON: Rear door LH touch sensor (unlock sensor) touched OFF: Rear door LH touch sensor (unlock sensor) not touched	Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

   Body Electrical > Smart Access > Data List 

   Tester Display
   Dr-Door Touch Sensor

   OK

   The Techstream display changes correctly in response to the operation of the rear door outside handle assembly LH.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  7

Result: 

OK 

See step  5

1. Turn the engine switch off.
2. Open and close the rear door LH.
3. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the rear door LH.
4. Read the Data List according to the display on the Techstream.
5. Touch the lock sensor of the front door outside handle assembly (for rear door LH).

   HINT: 

   • If the door does not lock even when touching the lock sensor, touch it with your palm.
   • When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

   Body Electrical > Smart Access > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Dr-Door Trigger Switch	Rear door LH touch sensor (lock sensor)	ON or OFF	ON: Rear door LH touch sensor (lock sensor) touched OFF: Rear door LH touch sensor (lock sensor) not touched	Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

   Body Electrical > Smart Access > Data List 

   Tester Display
   Dr-Door Trigger Switch

   HINT: 

   When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

   OK

   The Techstream display changes correctly in response to the operation of the rear door outside handle assembly LH.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Lock Sensor

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  7

Result: 

OK 

See step  6

1. Check the following antenna in key diagnostic mode.

   Body Electrical > Smart Access > Utility 

   Tester Display
   Communication Check(Key Diag Mode)

2. Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.
   1. Check the electrical key antenna (for rear door LH):

      When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the rear door outside handle assembly LH, check that the wireless buzzer sounds.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	0.7 to 1 m (2.30 to 3.28 ft.)

      HINT: 

      • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
      • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

   Result

   Result	Proceed to
   Wireless buzzer does not sound	A
   Wireless buzzer sounds	B

Result: 

B 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

Result: 

A 

See step  7

1. Disconnect the R1 certification ECU (smart key ECU assembly) connector.
2. Disconnect the P4 rear door outside handle assembly LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R1-1 (CLG3) - P4-4 (ANT1)	Always	Below 1 Ω
   R1-2 (CG3B) - P4-5 (ANT2)	Always	Below 1 Ω
   R1-1 (CLG3) or P4-4 (ANT1) - Body ground	Always	10 kΩ or higher
   R1-2 (CG3B) or P4-5 (ANT2) - Body ground	Always	10 kΩ or higher

4. Reconnect the R1 certification ECU (smart key ECU assembly) connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  8

1. Using an oscilloscope, check the waveform.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Rear Door Outside Handle Assembly LH)
   *b	Waveform 1

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   P4-4 (ANT1) - P4-5 (ANT2)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	5 V/DIV., 100 ms/DIV.	Pulse generation (See waveform 1)

   *: For details about the entry function detection area, refer to Operation Check.

   Refer to OPERATION CHECK [09/2015 - 08/2019] , or refer to OPERATION CHECK [08/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

Result: 

OK 

See step  9

1. Connect all connectors and check that the function operates normally.

   Refer to OPERATION CHECK [09/2015 - 08/2019] , or refer to OPERATION CHECK [08/2019 - ]

   Result

   Result	Proceed to
   Entry function does not operate normally	A
   Entry function operates normally	B

Result: 

B 

END (CONNECTOR WAS NOT CONNECTED SECURELY) 

Result: 

A 

See step  10

1. Replace the rear door outside handle assembly LH with a new one or the rear door outside handle assembly RH if it is functioning properly.

   Refer to DISASSEMBLY [09/2015 - 08/2016] , or refer to DISASSEMBLY [08/2016 - 08/2019] , or refer to DISASSEMBLY [08/2019 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  11

1. Check that the function operates normally.

   Refer to OPERATION CHECK [09/2015 - 08/2019] , or refer to OPERATION CHECK [08/2019 - ]

   Result

   Result	Proceed to
   Entry function operates normally	A
   Entry function does not operate normally	B

Result: 

A 

END (REAR DOOR OUTSIDE HANDLE ASSEMBLY LH WAS DEFECTIVE) 

Result: 

B 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ]