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 ELECTRICAL KEY TRANSMITTER

CHECK ELECTRICAL KEY TRANSMITTER (LED)

INSPECT TRANSMITTER BATTERY (VOLTAGE)

CHECK WAVE ENVIRONMENT

CHECK POWER SOURCE

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY AND BODY GROUND)

CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - CERTIFICATION ECU AND BODY GROUND)

CHECK DOOR CONTROL RECEIVER (OPERATION)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. The entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (LandCruiser RM000000XU70G9X.html). Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.
   
2. When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the intelligent tester and vehicle begins.
   
3. Check that there are no electrical key transmitters in the vehicle.
   
4. Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output (LandCruiser RM000002BZF06SX.html).
   
5. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
   
6. When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.
   
7. Before replacing the certification ECU, refer to the Service Bulletin.
   

1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation (LandCruiser RM000002T6K07VX.html).
   

   OK:

   Door locks operate normally.
   

1. When another registered electrical key transmitter is used, check that the wireless and entry functions operate normally (LandCruiser RM000002U9W094X.html).
   

   Result

   Result	Proceed to
   Entry function operates	A
   Entry function does not operate	B

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 3 times	C

   HINT:

   1. The electrical key transmitter sends voltage information to the certification ECU when it is being used. The certification ECU displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.1 V or less.
      
   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 (except Manual Transmission) or clutch pedal (for Manual Transmission) and pressing the engine switch.
      

1. Inspect the transmitter battery (LandCruiser RM00000363X02UX.html).
   

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

   HINT:

   1. When the electrical key 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 at certain 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. Check that the combination meter display turns off when the engine switch is turned off.
   

   OK:

   Combination meter turns off.
   

   HINT:

   This confirms that systems other than the entry and start system are correctly detecting the state of the power source.

1. Disconnect the G38 ECU connector.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   G38-17 (CUTB) - Body ground	Always	11 to 14 V
   G38-1 (+B) - Body ground	Always	11 to 14 V

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   G38-15 (E) - Body ground	Always	Below 1 Ω

1. Disconnect the R17 receiver connector.
   

2. Disconnect the G39 ECU connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   R17-4 (+5) - G39-5 (RCO)	Always	Below 1 Ω
   R17-5 (DATA) - G39-15 (RDA)	Always	Below 1 Ω
   R17-2 (RSSI) - G39-16 (RSSI)	Always	Below 1 Ω
   G39-5 (RCO) - Body ground	Always	10 kΩ or higher
   G39-15 (RDA) - Body ground	Always	10 kΩ or higher
   G39-16 (RSSI) - Body ground	Always	10 kΩ or higher
   R17-1 (GND) - Body ground	Always	Below 1 Ω

1. Temporarily replace the door control receiver with a new or normally functioning one.
   

   1. for 5 Door: (LandCruiser RM0000046JL02MX.html).
      
   2. for 3 Door: (LandCruiser RM0000046JQ00VX.html).
      

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

   OK:

   Wireless and entry functions operate normally.