Infiniti FX35, FX50 (S51). Manual - part 678

P0197, P0198 EOT SENSOR

EC-253

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

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EC

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YES

>> Go to 

EC-253, "Diagnosis Procedure"

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NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005236852

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection M95. Refer to Ground Inspection in 

GI-39, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect EOT sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between EOT sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK EOT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between EOT sensor harness connector and ECM harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK EOT SENSOR

Refer to 

EC-253, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace engine oil temperature sensor.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005236853

1.

CHECK ENGINE OIL TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect engine oil temperature sensor harness connector.

3.

Remove engine oil temperature sensor.

EOT sensor

Ground

Voltage (V)

Connector

Terminal

F38

1

Ground

Approx. 5

EOT sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F38

2

F102

84

Existed

EC-254

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P0197, P0198 EOT SENSOR

4.

Check resistance between engine oil temperature sensor termi-
nals by heating with hot water as shown in the figure.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace engine oil temperature sensor.

Terminals

Condition

Resistance (k

Ω

)

1 and 2

Temperature

[

°

C (

°

F)]

20 (68)

2.1 - 2.9

50 (122)

0.68 - 1.00

90 (194)

0.236 - 0.260

JMBIA0080ZZ

P0222, P0223, P2132, P2133 TP SENSOR

EC-255

< DTC/CIRCUIT DIAGNOSIS >

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P0222, P0223, P2132, P2133 TP SENSOR

Description

INFOID:0000000005236854

Electric throttle control actuator consists of throttle control motor,
throttle position (TP) sensor, etc. The throttle position sensor
responds to the throttle valve movement. 
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. In addition,
these sensors detect the opening and closing speed of the throttle
valve and feed the voltage signals to the ECM. The ECM judges the
current opening angle of the throttle valve from these signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.

DTC Logic

INFOID:0000000005236855

DTC DETECTION LOGIC

NOTE:
If DTC P0222, P0223, P2132 or P2133 is displayed with DTC P0643, first perform the trouble diagnosis
for DTC P0643. Refer to 

EC-359, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-256, "Diagnosis Procedure"

.

NO

>> INSPECTION END

PBIB0145E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0222

Throttle position (TP) 
sensor 1 (bank 1) circuit 
low input

An excessively low voltage from the TP sensor 
1 is sent to ECM.

• Harness or connectors

(TP sensor 1 circuit is open or shorted.)

• Electric throttle control actuator

(TP sensor 1)

P0223

Throttle position (TP) 
sensor 1 (bank 1) circuit 
high input

An excessively high voltage from the TP sensor 
1 is sent to ECM.

P2132

Throttle position (TP) 
sensor 1 (bank 2) circuit 
low input

An excessively low voltage from the TP sensor 
1 is sent to ECM.

P2133

Throttle position (TP) 
sensor 1 (bank 2) circuit 
high input

An excessively high voltage from the TP sensor 
1 is sent to ECM.

EC-256

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P0222, P0223, P2132, P2133 TP SENSOR

Diagnosis Procedure

INFOID:0000000005236856

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection M95. Refer to Ground Inspection in 

GI-39, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect electric throttle control actuator harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between electric throttle control actuator harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-257, "Component Inspection"

.

DTC

Electric throttle control actuator

Ground

Voltage (V)

Bank

Connector

Terminal

P0222, P0223

1

F6

6

Ground

Approx. 5

P2132, P2133

2

F27

1

DTC

Electric throttle control actuator

ECM

Continuity

Bank

Connector

Terminal

Connector

Terminal

P0222, P0223

1

F6

3

F101

40

Existed

P2132, P2133

2

F27

4

48

DTC

Electric throttle control actuator

ECM

Continuity

Bank

Connector

Terminal

Connector

Terminal

P0222, P0223

1

F6

4

F101

30

Existed

P2132, P2133

2

F27

2

31