Driver Side Door 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 driver side door courtesy light switch.
   MULTIPLEX NETWORK BODY ECU
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D Door Courtesy SW	Courtesy switch / ON or OFF	ON: Courtesy light switch is pushed OFF: Courtesy light switch is not pushed	-

   OK

   ON (door courtesy light 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 MASTER SWITCH ASSEMBLY:
   
   

   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 Driver Door 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
   D-Seat Select	Driver side select	ON/OFF	-

   OK

   ON (D SELECT SIG is on) appears on the screen.

NG → REPLACE CERTIFICATION ECU ASSEMBLY 

OK: Go to next step 

1. With "D-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
   D-Touch Sensor	Driver side door touch sensor / ON or OFF	ON: Sensor is touched OFF: Sensor is not touched	-

   OK

   When driver side is selected ON, ON (Sensor is touched) appears on the screen.

NG → See step   7 

OK: Go to next step 

1. After replacing the multiplex network master switch assembly with a normal one, check that the entry unlock function operates normally.

   OK

   Entry unlock function operates normally.

NG → REPLACE CERTIFICATION ECU ASSEMBLY 

OK → END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 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 ASSEMBLY 

NG: Go to next step 

Fig 2: Identifying Antenna P3 Connector & Oscillator P4 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the p4 oscillator connector.
2. Disconnect the p3 antenna connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   p4-2 (SGT) - p3-6 (SGT)	Below 1 Ω
   p4-3 (ANT1) - p3-5 (ANT1)	Below 1 Ω
   p4-8 (ANT2) - p3-2 (ANT2)	Below 1 Ω
   p4-9 (TRG-) - p3-1 (TRG-)	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 3: Identifying Terminals Of P4 Oscillator And U28 ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the U28 ECU connector.
2. Disconnect the p4 oscillator connector.
3. Measure the resistance of the wire harness connectors.

   Standard resistance

   Tester Connection	Specified Condition
   U28-5 (SEL1) - p4-4 (SEL)	Below 1 Ω
   U28-22 (SEN1) - p4-6 (SENS)	Below 1 Ω
   U28-33 (CLG1) - p4-10 (CLG)	Below 1 Ω
   U28-34 (CG1B) - p4-5 (CLGB)	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → REPLACE ELECTRICAL KEY OSCILLATOR FRONT LH