Rear Door LH Entry Unlock Function does not Operate: Procedure

1. Check that the manual door unlock function operates normally.

   OK

   Manual door unlock function operates normally.

NG → GO TO POWER DOOR LOCK CONTROL SYSTEM 

OK: Go to next step 

1. Check the DATA LIST for proper functioning of the rear LH side door courtesy switches.
   MAIN BODY ECU RH:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Rr Door Courtesy SW	Rear door courtesy switch / ON or OFF	ON: Courtesy switch is pushed OFF: Courtesy switch is not pushed	-

   OK

   ON (door courtesy switch is pushed) appears on the screen.

NG → GO TO LIGHTING SYSTEM 

OK: Go to next step 

1. Check the DATA LIST for proper functioning of the door lock position switch.
   MULTIPLEX NETWORK DOOR ECU REAR LH:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Door Unlock Detection Switch	Door unlock detection switch / ON or OFF	ON: Door is unlocked OFF: Door is locked	-

   OK

   On the Techstream screen, the display changes between ON and OFF as shown in the chart above.

NG → GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door LH LOCK / UNLOCK Functions do not Operate) 

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.
   CERTIFICATION ECU:
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Dr-Seat Select	Driver side rear select	ON / OFF	-

   OK

   ON (Dr-Seat Select is on) appears on the screen.

NG → REPLACE CERTIFICATION ECU 

OK: Go to next step 

1. With "Dr-Seat Select" ON, check the DATA LIST for proper functioning of the touch sensor.
   CERTIFICATION ECU:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Dr-Touch Sensor	Driver side rear door touch sensor / ON or OFF	ON: Sensor is touched OFF: Sensor is not touched	-

   OK

   When driver side rear door touch sensor is touched, ON (Sensor is touched) appears on the screen.

NG → See step   7 

OK: Go to next step 

1. After replacing the multiplex network door ECU rear LH with a normal one, check that the entry unlock function operates normally.

   OK

   Entry unlock function operates normally.

NG → REPLACE CERTIFICATION ECU 

OK → END (MULTIPLEX NETWORK DOOR ECU REAR LH IS DEFECTIVE) 

Fig 1: Identifying Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the voltage of the oscillator connector.

   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

OK → REPLACE CERTIFICATION ECU 

NG: Go to next step 

Fig 2: Identifying s2 And s1 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the s2 oscillator connector.
2. Disconnect the s1 antenna connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   s2-2 (SGT) - s1-6 (SGT2)	Below 1 Ω
   s2-3 (ANT1) - s1-5 (ANT1)	Below 1 Ω
   s2-8 (ANT2) - s1-2 (ANT2)	Below 1 Ω
   s2-9 (TRG-) - s1-1 (TRG-)	Below 1 Ω
   s2-2 (SGT) or s1-6 (SGT2) - Body ground	10 kΩ or higher
   s2-3 (ANT1) or s1-5 (ANT1) - Body ground	10 kΩ or higher
   s2-8 (ANT2) or s1-2 (ANT2) - Body ground	10 kΩ or higher
   s2-9 (TRG-) or s1-1 (TRG-) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 3: Identifying U33 ECU And s2 Oscillator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the U33 ECU connector.
2. Disconnect the s2 oscillator connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   U33-1 (SEL3) - s2-4 (SEL)	Below 1 Ω
   U33-28 (SEN3) - s2-6 (SENS)	Below 1 Ω
   U33-8 (CLG3) - s2-10 (CLG)	Below 1 Ω
   U33-9 (CG3B) - s2-5 (CLGB)	Below 1 Ω
   U33-1 (SEL3) or s2-4 (SEL) - Body ground	10 kΩ or higher
   U33-28 (SEN3) or s2-6 (SENS) - Body ground	10 kΩ or higher
   U33-8 (CLG3) or s2-10 (CLG) - Body ground	10 kΩ or higher
   U33-9 (CG3B) or s2-5 (CLGB) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE DOOR ELECTRICAL KEY OSCILLATOR REAR LH