Room Oscillator does not Recognize Key: Procedure

1. Check that the wireless door lock and unlock functions operate normally.

   OK

   Wireless door lock functions operate normally.

NG → GO TO  WIRELESS DOOR LOCK CONTROL SYSTEM 

OK: Go to next step 

1. After replacing the key with a normally functioning one, check that the wireless lock and unlock functions operate normally.

   OK

   Wireless lock and unlock functions operate normally.

OK → END (KEY IS DEFECTIVE) 

NG: Go to next step 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the antenna operates.
   CERTIFICATION ECU:
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Fr-Seat Outside Transmitter	Indoor electrical key antenna (front)	ON/OFF	-
   Rr-Seat Outside Transmitter	Indoor electrical key antenna (rear)	ON/OFF	-
   Inside Trunk/Backdoor Transmitter	Luggage compartment door inner antenna	ON/OFF	-

   OK

   When key is brought close to indoor electrical key antenna, antenna is turned OFF and indicator on key illuminates.

OK → REPLACE CERTIFICATION ECU ASSEMBLY 

NG: Go to next step 

Fig 1: Identifying Terminals Of U35, V32 And V33 Antenna Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the U35, V32 and V33 antenna connectors.
2. Disconnect the U28 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   U35-1 (CLG3) - U28-11 (CLG5)*1	Below 1 Ω
   U35-1 (CLG3) or U28-11 (CLG5)*1 - Body ground	10 kΩ or higher
   V32-1 (CLG4) - U28-13 (CLG6)*2	Below 1 Ω
   V32-1 (CLG4) or U28-13 (CLG6)*2 - Body ground	10 kΩ or higher
   V33-1 (CLG6) - U28-15 (CLG7)*3	Below 1 Ω
   V33-1 (CLG6) or U28-15 (CLG7)*3 - Body ground	10 kΩ or higher
   U35-3 (CLGB) - U28-12 (CLG5B)*1	Below 1 Ω
   U35-3 (CLGB) or U28-12 (CG5B)*1 - Body ground	10 kΩ or higher
   V32-3 (CLGB) - U28-14 (LG6B)*2	Below 1 Ω
   V32-3 (CLGB) or U28-14 (CG6B)*2 - Body ground	10 kΩ or higher
   V33-3 (CLGB) - U28-16 (CG7B)*3	Below 1 Ω
   V33-3 (CLGB) or U28-16 (CG7B)*3 - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Carry the key into the vehicle.
2. Replace the indoor electrical key antenna with a new one.
3. Depress the brake pedal and check that the engine switch indicator illuminates in green.

   OK

   Engine switch indicator illuminates in green.

OK → END (INDOOR ELECTRICAL KEY ANTENNA IS DEFECTIVE) 

NG → REPLACE CERTIFICATION ECU ASSEMBLY