When the engine switch is pressed with the brake pedal depressed and the shift lever in P (for A/T) or the clutch pedal depressed (for M/T), the main body ECU determines that it is an engine start request.

The certification ECU (smart key ECU assembly) and other ECUs perform key verification via the LIN communication line. The engine switch indicator light illuminates in green.

The main body ECU activates the IG1 No. 3 relay, ACC relay and integration relay (IG2 relay).

The certification ECU (smart key ECU assembly) outputs a steering unlock signal. The signal is sent to the steering lock ECU via the LIN communication line.

The main body ECU sends an engine start request signal to the ECM.

The main body ECU deactivates the ACC relay until the ECU detects an engine start.

The ECU reactivates the ACC relay and turns off the engine switch indicator light.

Symbols of Main Body ECU	Signals
SSW1/SSW2	Engine switch on (ACC, IG) signal
IG1D	IG1 No. 3 relay operation signal
ACCD	ACC relay operation signal
IG2D	Integration relay (IG2 relay) operation signal
STP	Stop light switch signal
P (for A/T)	Shift lock signal
TACH	Engine start detection signal
STSW	Starter activation request signal
ACCR	ACC cut request signal

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

WIRING DIAGRAM

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

1.CHECK ENGINE SWITCH (SWITCH CONDITION)

Check the power source mode change.

When the key is inside the vehicle and the shift lever is in P (for A/T), check that pressing the engine switch causes the power source mode to change as follows:

OK:
off → on (ACC) → on (IG) → off

GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) (POWER SOURCE MODE DOES NOT CHANGE) (Click here)

OK

2.CHECK WHETHER DTC OUTPUT RECURS

Clear the DTCs (Click here).

Check whether the trouble recurs 5 seconds after the engine switch is turned on (IG).

Check whether DTCs for the main body ECU or certification ECU (smart key ECU assembly) are output.

Result
Result	Proceed to
No DTC output	A
Main body ECU Entry and start system (for start function)	B
Certification ECU (Smart key ECU assembly) Steering lock system	C
Certification ECU (Smart key ECU assembly) Engine immobiliser system	D

GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) (DIAGNOSTIC TROUBLE CODE CHART) (Click here)

GO TO STEERING LOCK SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (Click here)

GO TO ENGINE IMMOBILISER SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (Click here)

A

3.CHECK CRANKING FUNCTION

Check the engine cranking function.

for A/T:

When there is fuel in the fuel tank, the key is inside the vehicle and the shift lever is in P, check that depressing the brake pedal and pressing the engine switch cranks the engine.

for M/T:

When there is fuel in the fuel tank and the key is inside the vehicle, check that depressing the clutch pedal and pressing the engine switch cranks the engine.

OK:
Engine cranks.

Go to step 8

OK

4.READ VALUE USING INTELLIGENT TESTER (L CODE)

Use the Data List to check if L code certification is functioning properly.

Entry&Start
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
L Code Check	L code certification result/NG or OK	OK: L code certification result is normal NG: L code certification result is abnormal	-

OK:
OK is displayed on the intelligent tester.

Go to step 23

OK

5.READ VALUE USING INTELLIGENT TESTER (ENGINE START CONDITION)

Use the Data List to check if the engine start is functioning properly.

Entry&Start
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Engine Start Condition	Engine start condition by certification ECU (smart key ECU assembly)/OK or NG	OK: Engine start is permitted NG: Engine start is prohibited	-

OK:
OK is displayed on the intelligent tester.

Go to step 24

OK

6.READ VALUE USING INTELLIGENT TESTER (S CODE)

Use the Data List to check if S code certification is functioning properly.

Entry&Start
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
S Code Check	S code certification result/NG or OK	OK: S code certification result is normal NG: S code certification result is abnormal	-

OK:
OK is displayed on the intelligent tester.

Go to step 24

OK

7.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

Replace the ID code box (immobiliser code ECU).

Check that the engine starts.

Result
Result	Proceed to
Engine starts	A
Engine does not start (for 1GR-FE)	B
Engine does not start (for 1UR-FE)	C
Engine does not start (for 3UR-FE)	D
Engine does not start (for 1VD-FTV)	E

REPLACE ECM (Click here)

END

8.READ VALUE USING INTELLIGENT TESTER (PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH)

Use the Data List to check if the park/neutral position switch (for A/T) or clutch start switch (for M/T) is functioning properly.

Main Body
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Neutral SW/ Clutch SW	Park/neutral position switch (A/T), clutch start switch (M/T)/ON or OFF	ON: Shift lever in P or N (A/T), clutch pedal depressed (M/T) OFF: Shift lever not in P or N (A/T), clutch pedal released (M/T)	-

Result
Result	Proceed to
for A/T: ON (shift lever in P or N) and OFF (shift lever not in P or N) displayed on the intelligent tester.	A
for M/T: ON (clutch pedal depressed) and OFF (clutch pedal released) displayed on the intelligent tester.	B
for A/T: ON (shift lever in P or N) and OFF (shift lever not in P or N) not displayed on the intelligent tester. for M/T: ON (clutch pedal depressed) and OFF (clutch pedal released) not displayed on the intelligent tester.	C

Go to step 11

Go to step 15

A

9.READ VALUE USING INTELLIGENT TESTER (SHIFT LOCK CONTROL ECU)

Use the Data List to check if the shift position signal is functioning properly.

Main Body
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Shift P Signal	Shift P position signal/ON or OFF	ON: Shift lever in P OFF: Shift lever not in P	-

OK:
ON (shift lever in P) and OFF (shift lever not in P) are displayed on the intelligent tester.

Go to step 13

OK

10.READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH)

Use the Data List to check if the stop light switch is functioning properly.

Main Body
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Stop Light SW	Stop light switch/ON or OFF	ON: Brake pedal is depressed OFF: Brake pedal is released	-

OK:
ON (brake pedal is depressed) and OFF (brake pedal is released) are displayed on the intelligent tester.

Go to step 20

OK

11.CHECK STEERING LOCK

Check if the steering lock is released when turning the engine switch on (ACC).

OK:
The steering lock is released.

GO TO STEERING LOCK SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (Click here)

OK

12.CHECK MAIN BODY ECU

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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

HINT:

The voltage is generated at terminal STSW for 0.3 seconds when the engine cranks.

Standard Voltage:
Tester Connection Condition Specified Condition
E4-4 (STSW) - Body ground for A/T:
Brake pedal depressed, engine switch depressed
for M/T:
Clutch pedal depressed, engine switch depressed 11 to 14 V

Result
Result	Proceed to
Outside specified range	A
Within specified range (for 1GR-FE)	B
Within specified range (for 1UR-FE)	C
Within specified range (for 3UR-FE)	D
Within specified range (for 1VD-FTV)	E

REPLACE ECM (Click here)

REPLACE MAIN BODY ECU

13.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SHIFT LOCK CONTROL ECU AND BODY GROUND)

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the E4 main body ECU connector.

Disconnect the E51 shift lock control ECU connector.

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

Standard Resistance:
Tester Connection Condition Specified Condition
E4-2 (P) - E51-11 (P2) Always Below 1 Ω
E51-3 (E) - Body ground Always Below 1 Ω
E4-2 (P) or E51-11 (P2) - Body ground Always 10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

14.INSPECT SHIFT LOCK CONTROL ECU

Check the signal waveform according to the condition(s) in the table below.

Reference
Terminal No. (Symbol)	Tool Setting	Condition
E51-11 (P2) - E51-3 (E)	2 V/DIV., 20 msec./DIV.	Shift lever in P

OK:
The waveform is similar to that shown in the illustration.

Result
Result		Proceed to
OK		A
NG	for 1GR-FE	B
	for 1VD-FTV, 3UR-FE, 1UR-FE	C

REPLACE SHIFT LOCK CONTROL ECU (Click here)

REPLACE MAIN BODY ECU

15.INSPECT STARTER RELAY (ST)

expect GRJ200L-GNANKC, URJ202L-GNTEKC:

Remove the ST relay from the engine room relay block.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher
3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 Ω

for GRJ200L-GNANKC, URJ202L-GNTEKC:

Remove the ST relay from the engine room relay block.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher
3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 Ω

Result
Result	Proceed to
Within specified range (for A/T)	A
Within specified range (for M/T)	B
Outside specified range	C

Go to step 17

REPLACE STARTER RELAY

A

16.INSPECT PARK/NEUTRAL POSITION SWITCH

Disconnect the C24 park/neutral position switch connector.

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

Standard Resistance:
Tester Connection Condition Specified Condition
4 (B) - 5 (L) P Below 1 Ω
4 (B) - 5 (L) N Below 1 Ω
4 (B) - 5 (L) Not in P or N 10 kΩ or higher

Result
Result	Proceed to
Outside specified range (for A750F)	A
Outside specified range (for AB60F)	B
Within specified range	C

REPLACE PARK/NEUTRAL POSITION SWITCH (Click here)

Go to step 18

REPLACE PARK/NEUTRAL POSITION SWITCH (Click here)

17.INSPECT CLUTCH START SWITCH

Disconnect the A49 (for LHD) or e1 (for RHD) clutch start switch connector.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1 - 2 Clutch start switch pin pushed Below 1 Ω
1 - 2 Clutch start switch pin not pushed 10 kΩ or higher

REPLACE CLUTCH START SWITCH (Click here)

OK

18.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH AND BODY GROUND)

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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

Standard Resistance (for A/T):
Tester Connection Condition Specified Condition
E1-8 (STR) - C24-4 (B) Always Below 1 Ω
E1-8 (STR) or C24-4 (B) - Body ground Always 10 kΩ or higher

Standard Resistance (for M/T):

Tester Connection	Condition	Specified Condition
for LHD: E1-8 (STR) - A49-1	Always	Below 1 Ω
for LHD: E1-8 (STR) or A49-1 - Body ground	Always	10 kΩ or higher
for RHD: E1-8 (STR) - e1-1	Always	Below 1 Ω
for RHD: E1-8 (STR) or e1-1 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

19.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH - STARTER RELAY AND BODY GROUND)

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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

Standard Resistance (for A/T):

Tester Connection	Condition	Specified Condition
C24-5 (L) - Relay block ST relay terminal 11 C24-5 (L) - Relay block ST relay terminal 22	Always	Below 1 Ω
C24-5 (L) or Relay block ST relay terminal 1 - Body ground1 C24-5 (L) or Relay block ST relay terminal 2 - Body ground2	Always	10 kΩ or higher
Relay block ST relay terminal 2 - Body ground1 Relay block ST relay terminal 1- Body ground2	Always	Below 1 Ω

HINT:

*1: for GRJ200L-GNANKC, URJ202L-GNTEKC

*2: except GRJ200L-GNANKC, URJ202L-GNTEKC

Standard Resistance (for M/T):

Tester Connection	Condition	Specified Condition
for LHD: A49-2 - Relay block ST relay terminal 11 A49-2 - Relay block ST relay terminal 22	Always	Below 1 Ω
for LHD: A49-2 or Relay block ST relay terminal 1 - Body ground1 A49-2 or Relay block ST relay terminal 2 - Body ground2	Always	10 kΩ or higher
for RHD: e1-2 - Relay block ST relay terminal 11 e1-2 - Relay block ST relay terminal 22	Always	Below 1 Ω
for RHD: e1-2 or Relay block ST relay terminal 1 - Body ground1 e1-2 or Relay block ST relay terminal 2 - Body ground2	Always	10 kΩ or higher
Relay block ST relay terminal 2 - Body ground1 Relay block ST relay terminal 1 - Body ground2	Always	Below 1 Ω

HINT:

*1: for GRJ200L-GNANKC, URJ202L-GNTEKC

*2: except GRJ200L-GNANKC, URJ202L-GNTEKC

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

20.INSPECT FUSE (STOP)

Remove the STOP fuse from the engine room relay block.

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

Standard Resistance:
Tester Connection Condition Specified Condition
STOP fuse Always Below 1 Ω

REPLACE FUSE

OK

21.INSPECT STOP LIGHT SWITCH

Disconnect the A30 stop light switch connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
1 - 2	Stop light switch pin not pushed	Below 1 Ω
3 - 4	Stop light switch pin pushed	Below 1 Ω
1 - 2	Stop light switch pin pushed	10 kΩ or higher
3 - 4	Stop light switch pin not pushed	10 kΩ or higher

REPLACE STOP LIGHT SWITCH (Click here)

OK

22.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STOP LIGHT SWITCH AND BODY GROUND)

Entry And Start System (For Start Function) - Engine Does Not Start. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the 2B main body ECU connector.

Disconnect the A30 stop light switch connector.

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

Standard Voltage:
Tester Connection Condition Specified Condition
A30-2 - Body ground Always 11 to 14 V

Standard Resistance:
Tester Connection Condition Specified Condition
2B-22 (STP) - A30-1 Always Below 1 Ω
2B-22 (STP) or A30-1 - Body ground Always 10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

23.REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)

Replace the steering lock actuator assembly (steering lock ECU).

HINT:

For Power tilt and telescopic, use the following procedures Click here

For Manual tilt and telescopic, use the following procedures Click here

Check that the engine starts.

OK:
Engine starts.

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

END

24.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Replace the certification ECU (smart key ECU assembly).

Check that the engine starts.

OK:
Engine starts.

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

END

THEFT DETERRENT / KEYLESS ENTRY

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ENTRY AND START SYSTEM for Start Function