Back Door Entry Unlock Function does 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

B → See step   11 

C → See step   16 

A: Go to next step 

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

   OK

   All doors can be unlocked with door control switch.

NG → See step   12 

OK: Go to next step 

1. Check that the wireless door lock and unlock functions operate normally. Refer to OPERATION CHECK .

   OK

   Wireless door lock and unlock functions operate normally.

NG → See step   13 

OK: Go to next step 

1. Check the Data List for proper functioning of the back door courtesy light switch.
   MAIN BODY
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   Back Door Courtesy SW	Back door courtesy light switch signal / ON or OFF	ON: Back door is open OFF: Back door is closed	-

   OK

   On Techstream screen, item changes between ON and OFF according to above chart.

NG → See step   14 

OK: Go to next step 

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

   Tester Display	Test Part	Control Range	Diagnostic Note
   Back Door Select	Door electrical key oscillator (back door)	ON or OFF	-

   OK

   ON (Outside Trunk/Backdoor Transmitter is ON) appears on screen.

NG → See step   15 

OK: Go to next step 

1. With "Back Door Select" ON, check the Data List to confirm the operation of the touch sensor.
   SMART KEY
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   B-Door Touch Sensor	Back door touch sensor / ON or OFF	ON: Touch sensor is touched OFF: Touch sensor is not touched	-

   OK

   When back door sensor is set to ON, ON (sensor is touched) appears on screen.

NG → See step   8 

OK: Go to next step 

1. Temporarily replace the ECU aggregation box (certification ECU) with a new or normally functioning one.
2. Check that the entry back door unlock function operates normally.

   OK

   Entry back door unlock function operates normally.

NG → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

OK → END (CERTIFICATION ECU IS DEFECTIVE) 

Fig 1: Checking Door Electrical Key Oscillator (For Back Door)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the voltage of the oscillator.

   Standard voltage 

   Tester Connection	Condition	Specified Condition
   4 (SEL) - Body ground	During Active Test	Below 1 V
   6 (SENS) - Body ground	Touch sensor is touched during Active Test	Below 1 V
   	Touch sensor is not touched during Active Test	11 to 14 V

NG → See step   9 

OK → See step   15 

Fig 2: Checking Wire Harness (Door Electrical Key Oscillator - Electrical Key Antenna)

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: Checking Wire Harness (Certification ECU - Door Electrical Key Oscillator)

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
   E84-37 (SEL9) - Q11-4 (SEL)	Below 1 Ω
   E84-26 (SEN9) - Q11-6 (SENS)
   E84-31 (CLG9) - Q11-10 (CLG)
   E84-32 (CG9B) - Q11-5 (CLGB)
   E84-37 (SEL9) or Q11-4 (SEL) - Body ground	10 kΩ or higher
   E84-26 (SEN9) or Q11-6 (SENS) - Body ground
   E84-31 (CLG9) or Q11-10 (CLG) - Body ground
   E84-32 (CG9B) or Q11-5 (CLGB) - Body ground

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → REPLACE DOOR ELECTRICAL KEY OSCILLATOR (for Back Door)