Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the engine switch on (IG).
3. Following the display on the tester, select "DATA LIST".

   SMART KEY (Certification ECU): 

   DATA LIST
   
   

   Item	Measurement Item / Range (Display)	Normal Condition	Diagnostic Note
   D TOUCH SENSOR	Status of touch sensor front LH / ON or OFF	ON: Touch sensor is touched OFF: Touch sensor is not touched	-
   P TOUCH SENSOR	Status of touch sensor front RH / ON or OFF	ON: Touch sensor is touched OFF: Touch sensor is not touched	-
   DR TOUCH SENSOR	Status of touch sensor rear LH / ON or OFF	ON: Touch sensor is touched OFF: Touch sensor does not touched	-
   DP TOUCH SENSOR	Status of touch sensor rear RH / ON or OFF	ON: Touch sensor is touched OFF: Touch sensor does not touched	-

   OK: 

   "ON" (screen is touched) appears on the tester screen. 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

NG: GO TO NEXT STEP 

1. Disconnect the D39 and D40 ECU connector.
   Fig 1: Disconnecting D39 And D40 ECU Connector

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Disconnect the oscillator connectors.
   Fig 2: Disconnecting Oscillator Connectors

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. Measure the resistance between the oscillator and the certification ECU to check for an open circuit in the wire harness.

   Resistance: 

   Below 1  

4. Measure the resistance between the oscillator and the certification ECU to check for an short circuit in the wire harness.

   Resistance: 

   10 k or higher 

   HINT:

   Refer to the WIRING DIAGRAM  for connection of each terminal.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Reconnect the ECU and the oscillator connectors.
2. Connect the intelligent tester to the DLC3.
3. Turn the engine switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   SEL1 (D39-5) - Body ground	Move the key more than 5 m (16.4 ft) away from the front door LH --> Bring it to the outside handle	10 to 14 V --> Below 1 V
   SEL2 (D39-6) - Body ground	Move the key more than 5 m (16.4 ft) away from the front door RH --> Bring it to the outside handle	10 to 14 V --> Below 1 V
   SEL3 (D40-1) - Body ground	Move the key more than 5 m (16.4 ft) away from the rear door LH --> Bring it to the outside handle	10 to 14 V --> Below 1 V
   SEL4 (D40-2) - Body ground	Move the key more than 5 m (16.4 ft) away from the rear door RH --> Bring it to the outside handle	10 to 14 V --> Below 1 V
   SEN1 (D39-22) - Body ground	Front door LH outside handle is not held --> Front door LH outside handle is held	10 to 14 V --> Below 1 V
   SEN2 (D39-23) - Body ground	Front door LH outside handle is not held --> Front door LH outside handle is held	10 to 14 V --> Below 1 V
   SEN4 (D40-27) - Body ground	Rear door LH outside handle is not held --> Rear door LH outside handle is held	10 to 14 V --> Below 1 V
   SEN3 (D40-28) - Body ground	Rear door LH outside handle is not held --> Rear door LH outside handle is held	10 to 14 V --> Below 1 V

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

Fig 3: Inspecting Certification ECU

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: GO TO NEXT STEP 

1. Replace the door oscillator.
2. Check that the entry UNLOCK function operates normally.

   OK: 

   Entry UNLOCK function operates normally. 

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

OK: END (DOOR OSCILLATOR IS DEFECTIVE)