Entry And Start System (For Entry Function) All Door Entry Lock/Unlock Functions And Wireless Functions Do Not Operate

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK POWER DOOR LOCK CONTROL SYSTEM

CHECK DOOR CONTROL TRANSMITTER

CHECK DOOR CONTROL TRANSMITTER (LED)

INSPECT TRANSMITTER BATTERY (VOLTAGE)

CHECK WAVE ENVIRONMENT

INSPECT FUSE (IMB)

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - BATTERY)

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - DOOR CONTROL RECEIVER AND BODY GROUND)

CHECK DOOR CONTROL RECEIVER (OPERATION)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. Before performing the inspection, check that there are no problems related to the "CAN Communication System" and "LIN Communication System".
   
2. Check that there are no door control transmitters in the vehicle.
   
3. Before performing the inspection, check that DTC B1242 is not output (Click here).
   

1. When the master switch door control switch is operated, check that the locked doors unlock (Click here).
   

   OK:

   Locked doors unlock.
   

1. When another registered door control transmitter is used, check that the wireless and entry function operates normally (Click here).
   

   Result

   Result	Proceed to
   Entry function operates and door control transmitter that did not operate is electrical key transmitter	A
   Entry function does not operate	B

1. Check the transmitter battery level of the electrical key transmitter that was checked first.
   

   1. Press and hold the lock switch of the transmitter for 5 seconds and check the number of times that the transmitter LED illuminates.
      

      Result

      Result	Proceed to
      Transmitter LED does not illuminate when switch is pressed and held	A
      Transmitter LED illuminates 3 times or more when switch is pressed and held	B
      Transmitter LED illuminates once or twice but not a third time	C

      HINT:

      1. The electrical key transmitter sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.5 V or less (Click here).
         
      2. Even if the transmitter battery is depleted, it is still possible to start the engine by holding the electrical key transmitter against the engine switch, depressing the brake pedal and pressing the engine switch.
         

1. Electrical key transmitter
   

   HINT:

   1. Type A: for Australia
      
   2. Type B: except Australia, China
      
   3. Type C: for China
      
   
   
   

   1. Remove the battery from the electrical key transmitter that does not operate. Attach a lead wire (0.6 mm (0.0236 in.) or less in diameter including wire sheath) with tape or equivalent to the negative terminal (Click here).
      

      
      
      
      

      NOTICE:

      Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

   2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.
      

   
   
   

   3. Check the transmitter battery voltage waveform.
      

      HINT:

      When measuring the battery voltage, while operating the lock switch of a door handle, bring the electrical key transmitter within the entry operating range to perform the measurement. For the entry operating range, refer to System Description (Click here).

      
      
      
      

      OK:

      Tester Connection	Condition	Specified Condition
      Transmitter battery positive (+) - Transmitter battery negative (-)	Engine switch off, all doors closed and lock switch pushed	2.5 to 3.2 V

1. Bring the door control transmitter near the door control receiver, and perform a wireless and entry function operation check.
   

   HINT:

   1. When the door control transmitter is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      
   2. If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
      

   OK:

   Wireless and entry functions operate normally.
   

1. Remove the IMB fuse from the engine room relay block.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   IMB fuse	Always	Below 1 Ω

1. Disconnect the E29 ECU connector.
   

2. Measure the voltage according to the value(s) in the tables below.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   E29-1 (+B) - Body ground	Always	11 to 14 V

1. Disconnect the L21 receiver connector.
   

2. Disconnect the E29 ECU connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E29-29 (RCO) - L21-4 (+5)	Always	Below 1 Ω
   E29-38 (RDA) - L21-5 (DATA)	Always	Below 1 Ω
   E29-39 (RSSI) - L21-2 (RSSI)	Always	Below 1 Ω
   E29-17(E) - Body ground	Always	Below 1 Ω
   L21-1 (GND) - Body ground	Always	Below 1 Ω
   E29-29 (RCO) or L21-4 (+5) - Body ground	Always	10 kΩ or higher
   E29-38 (RDA) or L21-5 (DATA) - Body ground	Always	10 kΩ or higher
   E29-39 (RSSI) or L21-2 (RSSI) - Body ground	Always	10 kΩ or higher

1. Temporarily replace the door control receiver with a new one (Click here).
   

2. Check that the wireless and entry functions operate normally.
   

   OK:

   Wireless and entry functions operate normally.