Nissan Frontier D22. Instruction — part 263

DTC P0117, P0118 ECT SENSOR

EC-155

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

DTC Confirmation Procedure

UBS00D2W

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.

WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Wait at least 5 seconds.

4.

If DTC is detected, go to

EC-157, "Diagnostic Procedure"

.

WITH GST

Follow the procedure “With CONSULT-II”.

SEF058Y

EC-156

[KA24DE]

DTC P0117, P0118 ECT SENSOR

Wiring Diagram

UBS00D2X

AEC984A

DTC P0117, P0118 ECT SENSOR

EC-157

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Diagnostic Procedure

UBS00D2Y

1.

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect engine coolant temperature sensor harness connec-
tor.

3.

Turn ignition switch ON.

4.

Check voltage between engine coolant temperature sensor ter-
minal 1 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the harness for open or short between ECM and engine coolant temperature sensor.

>> Repair harness or connectors.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check harness continuity between engine coolant temperature sensor terminal 2 and engine ground.
Refer to Wiring Diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the harness for open or short between ECM and engine coolant temperature sensor.

>> Repair open circuit or short to power in harness or connectors.

SEF330V

Voltage

: Approximately 5V

SEF206W

Continuity should exist.

EC-158

[KA24DE]

DTC P0117, P0118 ECT SENSOR

5.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to

EC-158, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> Replace engine coolant temperature sensor.

6.

CHECK INTERMITTENT INCIDENT

Perform

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

.

>> INSPECTION END.

Component Inspection

UBS00D2Z

ENGINE COOLANT TEMPERATURE SENSOR

1.

Check resistance between engine coolant temperature sensor
terminals 1 and 2 as shown in the figure.

<Reference data>

*: These data are reference values and are measured between ECM terminal
59 (Engine coolant temperature sensor) and ground.

2.

If NG, replace engine coolant temperature sensor.

PBIB2005E

Engine coolant

temperature

°C (°F)

Voltage*

V

Resistance

k

Ω

20 (68)

3.5

2.1 - 2.9

50 (122)

2.2

0.68 - 1.00

90 (194)

0.9

0.236 - 0.260

SEF012P