Inspection 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. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the oscillator operates.

   Certification ECU: 

   ACTIVE TEST
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   D-Seat Outside Transmitter	Driver side transmitter	ON/OFF	-

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

OK : REPLACE CERTIFICATION ECU ASSEMBLY 

NG : Go to next step 

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   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 

Fig 1: Identifying Terminals Of U28 ECU And P4 Oscillator Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to next step 

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   p4-2 (SGT) - p3-6 (SGT2)	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 

Fig 2: Identifying Terminals Of P4 Oscillator And P3 Antenna Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to next step 

1. Disconnect the p4 oscillator connector.
2. Disconnect the M10 ECU connector.
3. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   p4-1 (+B) - M10-7 (OSCB)	Below 1 Ω
   p4-7 (GND) - M10-20 (OSCE)	Below 1 Ω

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 3: Identifying Terminals Of P4 Oscillator And M10 ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to next step 

1. Disconnect the p3 oscillator connector.
2. Disconnect the M10 ECU connector.
3. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   p3-3 (TRG+) - M10-18 (TRG+)	Below 1 Ω

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 4: Identifying Terminals Of M10 ECU And P3 Oscillator Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 ASSEMBLY 

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