Engine Immobiliser System (W/ Entry And Start System) Diagnosis System

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. DESCRIPTION

  1. CHECK DLC3

  1. INSPECT BATTERY VOLTAGE

  1. START FUNCTION PROBLEM SYMPTOMS

Engine Immobiliser System (W/ Entry And Start System) -- Diagnosis System



DESCRIPTION

  1. The certification ECU (smart key ECU assembly) and ECM control the vehicle engine immobiliser system functions. Engine immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3).
    In some cases, a malfunction may be occurring in the engine immobiliser system even though the security indicator light is not illuminated.
    When the system seems to be malfunctioning, use the GTS to check for malfunctions and perform repairs.


CHECK DLC3

  1. Check the DLC3 (Click here).


INSPECT BATTERY VOLTAGE

  1. Measure the battery voltage.

    Standard voltage:
    11 to 14 V
    If the voltage is below 11 V, recharge or replace the battery.

START FUNCTION PROBLEM SYMPTOMS

Symptom
Suspected Area
Component Malfunction
Possible Output DTCs
Related Data List Item
Engine cannot be started*1
Certification ECU (smart key ECU assembly)
Open or short circuit inside ECU
  1. B278A
  2. B2799
  3. B279A
  1. # Codes
  2. Immobilizer when IG=ON
  3. Immobiliser
  4. Master Key
  5. Sub Key
  6. BCC Malfunction
  7. Abnormal Status
  8. Different Encrypt Code
  9. Different Serial Number
  10. Frame Error
  11. Response
  12. Wireless Starter Com ID
  13. Wireless C Code
  14. Engine Start Condition
  15. ID-BOX Sleep Condition
  16. ID-BOX Start Condition
  17. Engine Start Request
  18. 3bit Code Request
  19. S Code Check
  20. L Code Check
  21. Unlock Request Receive
  22. Lock Request Receive
  23. S Code Check (Past)
  24. L Code Check (Past)
  25. EFI Code Receive
  26. EFI Communication
Engine cannot be started*1
ID code box (immobiliser code ECU)
Open or short circuit inside ECU
  1. B2790
  2. B2799
  3. B279A
  1. Immobilizer when IG=ON
  2. Immobiliser
  3. Master Key
  4. Sub Key
  5. BCC Malfunction
  6. Abnormal Status
  7. Different Encrypt Code
  8. Different Serial Number
  9. Frame Error
  10. Response
  11. ID-BOX Sleep Condition
  12. ID-BOX Start Condition
  13. Engine Start Request
  14. 3bit Code Request
  15. S Code Check
  16. L Code Check
  17. S Code Check (Past)
  18. L Code Check (Past)
  19. EFI Code Receive
  20. EFI Communication
ECM
Open or short circuit inside ECU
  1. B2799
  2. B279A
  3. B279C
EFI Code Receive
  1. SFI system*3
  2. ECD system*4
ECM incompatible with installed engine immobiliser system
B279C
  1. Engine Start Condition
  2. EFI Code Receive
Power source mode cannot be changed*1
Engine switch
Open or short circuit inside switch
B278A
  1. Unlock Request Receive
  2. Lock Request Receive
Certification ECU (smart key ECU assembly)
Open or short circuit inside ECU
  1. B2271
  2. B2274
  1. Immobilizer when IG=ON
  2. Immobiliser
Steering lock lock/ unlock not possible*2
Steering lock ECU (steering lock actuator assembly)
  1. Open or short circuit inside ECU
  2. Actuator stuck
  1. B2781
  2. B2782
  3. B2788
  1. Unlock Request Receive
  2. Lock Request Receive
  1. *1: Refer to Problem Symptoms Table for Entry and Start system (for Start Function) (Click here).
  2. *2: Refer to Problem Symptoms Table for Steering Lock System (Click here).
  3. *3: for Gasoline
  4. *4: for Diesel