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  WIRELESS DOOR LOCK CONTROL FUNCTION 

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 (for front)	ON / OFF	-
   Rr-Seat Outside Transmitter	Indoor electrical key antenna (for rear)	ON / OFF	-
   Inside Trunk/Back Door Transmitter	Indoor electrical key antenna (for luggage)	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 

NG: Go to next step 

Fig 1: Identifying Indoor Electrical Key Antenna And Certification ECU Connector Terminals

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 (CG5B)*1	Below 1 Ω
   U35-3 (CLGB) or U28-12 (CG5B)*1 - Body ground	10 kΩ or higher
   V32-3 (CLGB) - U28-14 (CG6B)*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 OR 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 power switch indicator illuminates in green.

   OK

   Power switch indicator illuminates in green.

OK → END (INDOOR ELECTRICAL KEY ANTENNA IS DEFECTIVE) 

NG → REPLACE CERTIFICATION ECU