Back Door Entry Lock and Unlock Functions do not Operate: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream ON.
3. By following the Techstream screen display, check whether any DTCs are output.

   OK

   No DTC output.

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (2AR-FE)	B
   NG (2GR-FE)	C

C → See step   13 

B → See step   10 

A: Go to next step 

1. Check that all the doors lock when the door control switch (for manual operation) is turned to LOCK and UNLOCK.

   OK

   All doors can be locked and unlocked with door control switch.

NG → See step   11 

OK: Go to next step 

1. Select the Active Test, use the Techstream to generate a control command, and then check that the oscillator operates.
   SMART KEY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Outside Trunk/Backdoor Transmitter	Door electrical key oscillator (back door)	ON or OFF	-

   OK

   When key is brought close to door oscillator that is ON, indicator light on key illuminates.

NG → See step   4 

OK → See step   12 

Fig 1: Identifying Certification ECU And Door Electrical Key Oscillator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E84 ECU connector.
2. Disconnect the Q11 oscillator connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   E84-31 (CLG9) - Q11-10 (CLG)	Below 1 Ω
   E84-32 (CG9B) - Q11-5 (CLGB)
   E84-31 (CLG9) or Q11-10 (CLG) - Body ground	10 kΩ or higher
   E84-32 (CG9B) or Q11-5 (CLGB) - Body ground

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 2: Identifying Door Electrical Key Oscillator And Door Electrical Key Antenna Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the Q11 oscillator connector.
2. Disconnect the Q12 antenna connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   Q11-2 (SGT) - Q12-6 (SGT)	Below 1 Ω
   Q11-3 (ANT1) - Q12-5 (ANT1)
   Q11-8 (ANT2) - Q12-2 (ANT2)
   Q11-9 (TRG-) - Q12-1 (TRG-)
   Q11-2 (SGT) or Q12-6 (SGT) - Body ground	10 kΩ or higher
   Q11-3 (ANT1) or Q12-5 (ANT1) - Body ground
   Q11-8 (ANT2) or Q12-2 (ANT2) - Body ground
   Q11-9 (TRG-) or Q12-1 (TRG-) - Body ground

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 3: Identifying Door Electrical Key Oscillator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the Q11 oscillator connector.
2. Measure the resistance and voltage of the wire harness side connector.

   Standard resistance

   Tester Connection	Specified Condition
   Q11-7 (GND) - Body ground	Below 1 Ω

   Standard voltage

   Tester Connection	Specified Condition
   Q11-1 (+B) - Body ground	11 to 14 V

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 4: Identifying Door Electrical Key Antenna And Certification ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the Q12 antenna connector.
2. Disconnect the E84 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   Q12-3 (TRG+) - E84-7 (TSW9)	Below 1 Ω
   Q12-3 (TRG+) or E84-7 (TSW9) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Temporarily replace the back door outside handle with a new or normally functioning one. Refer to REMOVAL .
2. Check that the entry lock and unlock functions operate normally. Refer to OPERATION CHECK .

   OK

   Entry lock and unlock functions operate normally.

NG → END (ELECTRICAL KEY ANTENNA IS DEFECTIVE) 

OK: Go to next step 

1. Temporarily replace the door electrical key oscillator (back door) with a new or normally
2. Check that the entry lock and unlock functions operate normally.

   OK

   Entry lock and unlock functions operate normally.

NG → See step   12 

OK → END (DOOR KEY OSCILLATOR IS DEFECTIVE)