If DTC P0115, P0117 or P0118 is stored, the ECM operates the fail-safe function in which the engine coolant temperature is assumed to be 80°C (176°F).

P0115
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine switch on (IG) for 0.5 seconds	Open or short in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic).	Open or short in engine coolant temperature sensor circuit Engine coolant temperature sensor ECM

P0117
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine switch on (IG) for 0.5 seconds	Short in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic).	Short in engine coolant temperature sensor circuit Engine coolant temperature sensor ECM

P0118
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine switch on (IG) for 0.5 seconds	Open in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic).	Open in engine coolant temperature sensor circuit Engine coolant temperature sensor ECM

Related Data List
DTC No.	Data List
P0115 P0117 P0118	Coolant Temp

HINT:

If DTC P0115, P0117 and/or P0118 is stored, the following symptoms may appear:

Misfire

Combustion noise

Black smoke

White smoke

Lack of power

When DTC P0115, P0117 and/or P0118 is stored, check the engine coolant temperature by entering the following menus: Engine and ECT / Data List / Coolant Temp.

Reference
Temperature Displayed	Malfunction
-40°C (-40°F)	Open circuit
140°C (284°F) or higher	Short circuit

WIRING DIAGRAM

Dtc P0115 Engine Coolant Temperature Circuit. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

NOTICE:

After replacing the ECM, the new ECM needs registration () and initialization ().

After replacing the fuel supply pump assembly, the ECM needs initialization ().

After replacing an injector assembly, the ECM needs registration ().

HINT:

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

1.READ VALUE USING GTS (ENGINE COOLANT TEMPERATURE)

Connect the GTS to the DLC3.

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

Enter the following menus: Engine and ECT / Data List / Coolant Temp.

Read the value.

OK:
70 to 90°C (158 to 194°F) with warm engine

Result
Result	Proceed to
-40°C (-40°F)	A
140°C (284°F) or higher	B
70 to 90°C (158 to 194°F)	C

HINT:

If there is an open circuit, the GTS indicates -40°C (-40°F).

If there is a short circuit, the GTS indicates 140°C (284°F) or higher.

Go to step 4

Go to step 11

A

2.READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)

Dtc P0115 Engine Coolant Temperature Circuit. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the engine coolant temperature sensor connector.

Connect terminals 1 and 2 of the engine coolant temperature sensor wire harness side connector.

Connect the GTS to the DLC3.

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

Enter the following menus: Engine and ECT / Data List / Coolant Temp.

Read the value.

OK:
140°C (284°F) or higher

Text in Illustration
*1	Engine Coolant Temperature Sensor
*2	ECM
*a	Front view of wire harness connector (to Engine Coolant Temperature Sensor)

Reconnect the engine coolant temperature sensor connector.

Go to step 7

Go to step 3

3.CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

Disconnect the engine coolant temperature sensor connector.

Disconnect the ECM connector.

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

Standard Resistance:
for LHD
Tester Connection Condition Specified Condition
C71-2 - C45-93 (THW) Always Below 1 Ω
C71-1 - C45-92 (E2) Always Below 1 Ω
for RHD
Tester Connection Condition Specified Condition
C71-2 - C46-93 (THW) Always Below 1 Ω
C71-1 - C46-92 (E2) Always Below 1 Ω

for LHD
Tester Connection	Condition	Specified Condition
C71-2 - C45-93 (THW)	Always	Below 1 Ω
C71-1 - C45-92 (E2)	Always	Below 1 Ω

for RHD
Tester Connection	Condition	Specified Condition
C71-2 - C46-93 (THW)	Always	Below 1 Ω
C71-1 - C46-92 (E2)	Always	Below 1 Ω

Reconnect the engine coolant temperature sensor connector.

Reconnect the ECM connector.

Go to step 9

Go to step 8

4.READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)

Disconnect the engine coolant temperature sensor connector.

Connect the GTS to the DLC3.

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

Enter the following menus: Engine and ECT / Data List / Coolant Temp.

Read the value.

OK:
-40°C (-40°F)

Text in Illustration
*1	Engine Coolant Temperature Sensor
*2	ECM

Reconnect the engine coolant temperature sensor connector.

Go to step 10

Go to step 5

5.CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

Disconnect the engine coolant temperature sensor connector.

Disconnect the ECM connector.

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

Standard Resistance:
for LHD
Tester Connection Condition Specified Condition
C71-2 or C45-93 (THW) - Body ground Always 10 kΩ or higher
for RHD
Tester Connection Condition Specified Condition
C71-2 or C46-93 (THW) - Body ground Always 10 kΩ or higher

for LHD
Tester Connection	Condition	Specified Condition
C71-2 or C45-93 (THW) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
C71-2 or C46-93 (THW) - Body ground	Always	10 kΩ or higher

Reconnect the engine coolant temperature sensor connector.

Reconnect the ECM connector.

Go to step 8

OK

6.REPLACE ECM

Replace the ECM ().

Go to step 11

7.CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR.

Replace the engine coolant temperature sensor ().

Go to step 11

8.REPAIR OR REPLACE HARNESS OR CONNECTOR

Repair or replace the harness or connector.

Go to step 11

9.CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM.

Replace the ECM ().

Go to step 11

10.REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Replace the engine coolant temperature sensor ().

NEXT

11.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Connect the GTS to the DLC3.

Clear the DTCs ().

Turn the engine switch on (IG) for 1 second.

Enter the following menus: Engine and ECT / Trouble Codes.

Confirm that the DTC is not output again.

END

1VD-FTV ENGINE CONTROL

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ECD SYSTEM w/ DPF