1Vd-Ftv Engine Control. Ecd System (W/ Dpf) Mil Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200

1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK THAT MIL IS ILLUMINATED

CHECK WHETHER MIL TURNS OFF

CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)

CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

CHECK THAT MIL IS ILLUMINATED

CHECK THAT ENGINE STARTS

INSPECT COMBINATION METER ASSEMBLY (MIL CIRCUIT)

ECD SYSTEM (w/ DPF) - MIL Circuit

DESCRIPTION

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions detected by the ECM. When the engine switch is turned on (IG), power is supplied to the MIL circuit, and the ECM provides the circuit ground which illuminates the MIL.
The MIL operation can be checked visually. When the engine switch is first turned on (IG), the MIL should be illuminated and should then turn off when the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the GTS.

WIRING DIAGRAM

Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Mil Circuit

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses of circuits related to this system before performing the following inspection procedure.
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).

1.CHECK THAT MIL IS ILLUMINATED

Perform troubleshooting in accordance with the table below.
Result
Condition
Proceed to
MIL remains on
A
MIL does not illuminate
B

Result
Condition	Proceed to
MIL remains on	A
MIL does not illuminate	B

Go to step 5

A

2.CHECK WHETHER MIL TURNS OFF

Connect the GTS to the DLC3.

Turn the engine switch on (IG) and turn the GTS on.

Check if DTCs have been stored (Click here). If DTCs are present, write them down.

Clear DTCs (Click here).

Check that the MIL turns off.
Standard:
MIL turns off.

Go to step 3

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

3.CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)

Disconnect the ECM connector.

Turn the engine switch on (IG).

Check that the MIL is not illuminated.
OK:
MIL is not illuminated.

Reconnect the ECM connector.

Go to step 4

REPLACE ECM

4.CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

Disconnect the ECM connector.

Disconnect the combination meter connector.

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

Standard Resistance:
for LHD
Tester Connection
Condition
Specified Condition
E8-12 (CHK) - A38-24 (W)
Always
Below 1 Ω
E8-12 (CHK) or A38-24 (W) - Body ground
Always
10 kΩ or higher
for RHD
Tester Connection
Condition
Specified Condition
E8-12 (CHK) - A52-24 (W)
Always
Below 1 Ω
E8-12 (CHK) or A52-24 (W) - Body ground
Always
10 kΩ or higher

for LHD
Tester Connection	Condition	Specified Condition
E8-12 (CHK) - A38-24 (W)	Always	Below 1 Ω
E8-12 (CHK) or A38-24 (W) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
E8-12 (CHK) - A52-24 (W)	Always	Below 1 Ω
E8-12 (CHK) or A52-24 (W) - Body ground	Always	10 kΩ or higher

Reconnect the ECM connector.

Reconnect the combination meter connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE COMBINATION METER ASSEMBLY (Click here)

5.CHECK THAT MIL IS ILLUMINATED

Check if the MIL is illuminated when the engine switch is turned on (IG).
OK:
MIL is illuminated.

Go to step 6

SYSTEM OK

6.CHECK THAT ENGINE STARTS

Turn the engine switch on (IG).

Start the engine.
Result
Result
Proceed to
Engine starts
A
Engine does not start*
B
HINT:
*: The GTS cannot communicate with the ECM.

Result
Result	Proceed to
Engine starts	A
Engine does not start*	B

GO TO VC OUTPUT CIRCUIT (Click here)

A

7.INSPECT COMBINATION METER ASSEMBLY (MIL CIRCUIT)

See the combination meter troubleshooting procedure (Click here).

REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - ECM)

REPLACE COMBINATION METER ASSEMBLY (Click here)