Theft Deterrent Keyless Entry. Engine Immobiliser System (W/ Entry And Start System) Immobiliser System Does Not Operate Properly

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

READ VALUE USING GTS (IMMOBILISER FUEL CUT STATUS)

CHECK WHETHER ENGINE STARTS

CHECK HARNESS AND CONNECTOR (ID CODE BOX [IMMOBILISER CODE ECU] - ECM)

CHECK WHETHER ENGINE STARTS

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

CHECK WHETHER ENGINE STARTS

ENGINE IMMOBILISER SYSTEM (w/ Entry and Start System) - Immobiliser System does not Operate Properly

DESCRIPTION

The engine immobiliser system compares the ID code that is registered in the certification ECU (smart key ECU assembly) with the ID code of the transponder chip that is embedded in the electrical key transmitter sub-assembly.

WIRING DIAGRAM

(Click here)

INSPECTION PROCEDURE

NOTICE:

When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
The engine immobiliser system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the engine immobiliser system after confirming that the communication systems are functioning properly (Click here).
Before replacing the ECM, ID code box (immobiliser code ECU) or certification ECU (smart key ECU assembly), refer to Service Bulletin.
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation."

1.CHECK FOR DTC

Check for DTCs (Click here).
Result
Result
Proceed to
DTCs are not output (for SFI system)
A
DTCs are not output (for ECD system)
B
DTCs are output
C

Result
Result	Proceed to
DTCs are not output (for SFI system)	A
DTCs are not output (for ECD system)	B
DTCs are output	C

Go to step 3

GO TO DIAGNOSTIC TROUBLE CODE CHART (Click here)

A

2.READ VALUE USING GTS (IMMOBILISER FUEL CUT STATUS)

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Data List.

Read the Data List according to the display on the GTS.

Engine
Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Immobiliser Fuel Cut Status
Status of immobiliser fuel cut / ON or OFF
-
-
OK:
The item in the Data List indicates "OFF".
Result
Proceed to
OK (for 3UR-FE)
A
OK (for 1UR-FE)
B
OK (for 1GR-FE)
C
NG
D

Engine
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Immobiliser Fuel Cut Status	Status of immobiliser fuel cut / ON or OFF	-	-

GO TO SFI SYSTEM (Click here)

Go to step 3

GO TO SFI SYSTEM (Click here)

3.CHECK WHETHER ENGINE STARTS

Check that the engine starts 5 seconds after the engine switch turned on (IG).
OK:
Engine starts normally.

Go to step 4

USE SIMULATION METHOD TO CHECK (Click here)

4.CHECK HARNESS AND CONNECTOR (ID CODE BOX [IMMOBILISER CODE ECU] - ECM)

Disconnect the E124 ID code box (immobiliser code ECU) connector.

Disconnect the A38*1 or A52*2 ECM connector.
1. *1: for LHD
2. *2: for RHD

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

Standard Resistance:

for 3UR-FE:
Tester Connection	Condition	Specified Condition
E124-4 (EFIO) - A38-46 (IMI)	Always	Below 1 Ω
E124-3 (EFII) - A38-48 (IMO)	Always	Below 1 Ω
E124-4 (EFIO) or A38-46 (IMI) - Body ground	Always	10 kΩ or higher
E124-3 (EFII) or A38-48 (IMO) - Body ground	Always	10 kΩ or higher

for 1UR-FE, 1GR-FE (for LHD):
Tester Connection	Condition	Specified Condition
E124-4 (EFIO) - A38-40 (IMI)	Always	Below 1 Ω
E124-3 (EFII) - A38-29 (IMO)	Always	Below 1 Ω
E124-4 (EFIO) or A38-40 (IMI) - Body ground	Always	10 kΩ or higher
E124-3 (EFII) or A38-29 (IMO) - Body ground	Always	10 kΩ or higher

for 1UR-FE, 1GR-FE (for RHD):
Tester Connection	Condition	Specified Condition
E124-4 (EFIO) - A52-40 (IMI)	Always	Below 1 Ω
E124-3 (EFII) - A52-29 (IMO)	Always	Below 1 Ω
E124-4 (EFIO) or A52-40 (IMI) - Body ground	Always	10 kΩ or higher
E124-3 (EFII) or A52-29 (IMO) - Body ground	Always	10 kΩ or higher

for 1VD-FTV (for LHD):
Tester Connection	Condition	Specified Condition
E124-4 (EFIO) - A38-11 (IMI)	Always	Below 1 Ω
E124-3 (EFII) - A38-10 (IMO)	Always	Below 1 Ω
E124-4 (EFIO) or A38-11 (IMI) - Body ground	Always	10 kΩ or higher
E124-3 (EFII) or A38-10 (IMO) - Body ground	Always	10 kΩ or higher

for 1VD-FTV (for RHD):
Tester Connection	Condition	Specified Condition
E124-4 (EFIO) - A52-11 (IMI)	Always	Below 1 Ω
E124-3 (EFII) - A52-10 (IMO)	Always	Below 1 Ω
E124-4 (EFIO) or A52-11 (IMI) - Body ground	Always	10 kΩ or higher
E124-3 (EFII) or A52-10 (IMO) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.REGISTER ECU COMMUNICATION ID

NEXT

6.CHECK WHETHER ENGINE STARTS

Check that the engine starts.
OK:
Engine starts normally.

Go to step 7

END (COMMUNICATION ID REGISTRATION WAS DEFECTIVE)

7.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

Replace the ID code box (immobiliser code ECU) with a new one.
HINT:
Refer to Service Bulletin.

NEXT

8.REGISTER RECOGNITION CODE

NEXT

9.REGISTER ECU COMMUNICATION ID

NEXT

10.CHECK WHETHER ENGINE STARTS

Check that the engine starts.
OK:
Engine starts normally.
Result
Proceed to
OK
A
NG (for SFI System)
B
NG (for ECD System)
C
HINT:
*: Go to procedure:
1. for 3UR-FE: Click here
2. for 1UR-FE: Click here
3. for 1GR-FE: Click here
4. for 1VD-FTV (w/ DPF): Click here
5. for 1VD-FTV (w/o DPF): Click here

GO TO SFI SYSTEM*

GO TO ECD SYSTEM*

END (ID CODE BOX [IMMOBILISER CODE ECU] WAS DEFECTIVE)

Result	Proceed to
OK (for 3UR-FE)	A
OK (for 1UR-FE)	B
OK (for 1GR-FE)	C
NG	D