Rear Door LH Entry Lock and Unlock Functions do not Operate: Procedure

1. When the master switch assembly door control switch is operated, check that the locked doors unlock.

   OK

   Door locks operate normally.

NG → See step   12 

OK: Go to next step 

1. Using the Techstream, read the Data List.
   SMART KEY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Dr-Door Touch Sensor	Driver side rear door touch sensor / ON or OFF	ON: Touch sensor touched OFF: Touch sensor not touched	-
   Dr-Door Trigger Switch	Driver side rear door outside handle lock switch / ON or OFF	ON: Entry lock switch pushed OFF: Entry lock switch not pushed	-

   RESULT
   
   

   Result	Proceed to
   Display changes according to manual operation	A
   Display does not change according to manual operation	B

B → See step   5 

A: Go to next step 

1. Bring the electrical key transmitter near the driver side rear door outside handle, and perform a driver side rear door entry lock and unlock operation check.
   Fig 1: Identifying Distance Between Electrical Key Transmitter And Driver Side Rear Door

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible.

   HINT: 

   • When the electrical key transmitter is brought near the driver side rear door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
   • If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
   RESULT
   
   

   Result	Proceed to
   Operation check fails	A
   Operation check is normal	B

B → AFFECTED BY WAVE INTERFERENCE 

A: Go to next step 

1. Diagnostic mode inspection (driver side rear door electrical key oscillator).
   Fig 2: Identifying Distance Between Electrical Key Transmitter And Driver Side Rear Door

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Connect the Techstream to the DLC3.
   2. Turn the engine switch on (IG).
   3. Turn the Techstream on.
   4. Enter the following menus: Body Electrical / Smart Key / Smart Communication Check / Overhead + Driver Side Rear.
   5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

      HINT: 

      If the buzzer sounds, it can be determined that the driver side rear seat outside transmitter is operating normally.

      OK

      Wireless door lock buzzer sounds.

NG → See step   5 

OK → See step   13 

1. Disconnect the E30 ECU connector.
   Fig 3: E30 ECU & z28 Oscillator Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the z28 oscillator connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E30-1 (SEL3) - z28-4 (SEL)	Always	Below 1 Ω
   E30-8 (CLG3) - z28-10 (CLG)	Always	Below 1 Ω
   E30-9 (CG3B) - z28-5 (CLGB)	Always	Below 1 Ω
   E30-1 (SEL3) - Body ground	Always	10 kΩ or higher
   E30-8 (CLG3) - Body ground	Always	10 kΩ or higher
   E30-9 (CG3B) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the z27 handle connector.
   Fig 4: Identifying Door Electrical Key Oscillator And Rear Door Outside Handle Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the z28 oscillator connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z27-2 (ANT2) - z28-8 (ANT2)	Always	Below 1 Ω
   z27-5 (ANT1) - z28-3 (ANT1)	Always	Below 1 Ω
   z27-2 (ANT2) - Body ground	Always	10 kΩ or higher
   z27-5 (ANT1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the z28 oscillator connector.
   Fig 5: Identifying Door Electrical Key Oscillator Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   z28-1 (B) - z28-7 (GND)	Always	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the door electrical key oscillator. Refer to DISASSEMBLY - Step 39 .

NEXT: Go to next step 

1. Check that the entry function operates normally.

   OK

   Operates normally.

NG → See step   10 

OK → END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

1. Replace the rear door outside handle. Refer to REMOVAL - Step 10 .

NEXT: Go to next step 

1. Check that the entry function operates normally.

   OK

   Operates normally.

NG → See step   13 

OK → END (REAR DOOR OUTSIDE HANDLE IS DEFECTIVE)