Driver Side Door Entry Lock and Unlock Functions do not Operate: Procedure

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

   OK

   Manual door lock and 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 door lock position switch.
   MULTIPLEX NETWORK MASTER SWITCH:
   
   

   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 Outside Transmitter	Driver side oscillator	ON / OFF	-

   OK

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

OK → REPLACE CERTIFICATION ECU 

NG: Go to next step 

Fig 1: Identifying U28 ECU And q2 Oscillator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the U28 ECU connector.
2. Disconnect the q2 oscillator connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   U28-33 (CLG1) - q2-10 (CLG)	Below 1 Ω
   U28-34 (CG1B) - q2-5 (CLGB)	Below 1 Ω
   U28-33 (CLG1) or q2-10 (CLG) - Body ground	10 kΩ or higher
   U28-34 (CG1B) or q2-5 (CLGB) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 2: Identifying q1 And q2 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the q2 oscillator connector.
2. Disconnect the q1 antenna connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   q2-2 (SGT) - q1-6 (SGT2)	Below 1 Ω
   q2-3 (ANT1) - q1-5 (ANT1)	Below 1 Ω
   q2-8 (ANT2) - q1-2 (ANT2)	Below 1 Ω
   q2-9 (TRG-) - q1-1 (TRG-)	Below 1 Ω
   q2-2 (SGT) or q1-6 (SGT2) - Body ground	10 kΩ or higher
   q2-3 (ANT1) or q1-5 (ANT1) - Body ground	10 kΩ or higher
   q2-8 (ANT2) or q1-2 (ANT2) - Body ground	10 kΩ or higher
   q2-9 (TRG-) or q1-1 (TRG-) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 3: Identifying q2 Oscillator And M10 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the q2 oscillator connector.
2. Disconnect the M10 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   q2-1 (+B) - M10-7 (OSCB)	Below 1 Ω
   q2-7 (GND) - M10-20 (OSCE)	Below 1 Ω
   q2-1 (+B) or M10-7 (OSCB) - Body ground	10 kΩ or higher
   q2-7 (GND) or M10-20 (OSCE) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 4: Identifying q1 Oscillator And M10 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the q1 oscillator connector.
2. Disconnect the M10 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   q1-3 (TRG+) - M10-18 (TRG+)	Below 1 Ω
   q1-3 (TRG+) or M10-18 (TRG+) - Body ground	10 kΩor higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. After replacing the electrical key antenna front LH with a normal one, check that the entry lock and unlock functions operate normally.

   OK

   Entry lock and unlock functions operate normally.

OK → END (ELECTRICAL KEY ANTENNA FRONT LH IS DEFECTIVE) 

NG: Go to next step 

1. After replacing the door electrical key oscillator front LH with a normal one, check that the entry lock and unlock functions operate normally.

   OK

   Entry lock and unlock functions operate normally.

NG → REPLACE CERTIFICATION ECU 

OK → END (DOOR ELECTRICAL KEY OSCILLATOR FRONT LH IS DEFECTIVE)