Nissan Maxima. Manual - part 448

EC-276

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P0182, P0183 FTT SENSOR

Component Inspection

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1.

CHECK FUEL TANK TEMPERATURE SENSOR

1. Turn ignition switch OFF.

2. Remove fuel level sensor unit. Refer to 

FL-6, "Removal and Installation"

.

3. Check resistance between “fuel level sensor unit and fuel pump”

terminals by heating with hot water as shown in the figure.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace “fuel level sensor unit and fuel pump”. Refer to

FL-6, "Removal and Installation"

.

Terminals

Condition

Resistance

4 and 5

Temperature [

°C (°F)]

20 (68)

2.3 - 2.7 k

Ω

50 (122)

0.79 - 0.90 k

Ω

PBIB0931E

P0196 EOT SENSOR

EC-277

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P0196 EOT SENSOR

Description

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The engine oil temperature sensor is used to detect the engine oil

temperature. The sensor modifies a voltage signal from the ECM.

The modified signal returns to the ECM as the engine oil tempera-

ture input. The sensor uses a thermistor which is sensitive to the

change in temperature. The electrical resistance of the thermistor

decreases as temperature increases.

<Reference data>

*: These data are reference values and are measured between ECM terminals 54
(Engine oil temperature sensor) and 52 (Sensor ground).

DTC Logic

INFOID:0000000010094971

DTC DETECTION LOGIC

NOTE:

If DTC P0196 is displayed with DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or

P0198. Refer to 

EC-281, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

INSPECTION START

Is it necessary to erase permanent DTC?

YES

>> GO TO 6.

NO

>> GO TO 2.

SEF594K

Engine oil temperature

[

°C (°F)]

Voltage* (V)

Resistance (k

Ω)

–10 (14)

4.4

7.0 - 11.4

20 (68)

3.5

2.1 - 2.9

50 (122)

2.2

0.68 - 1.00

90 (194)

0.9

0.236 - 0.260

110 (230)

0.6

0.143 - 0.153

SEF012P

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0196

EOT SENSOR
[Engine oil temperature (EOT) 
sensor circuit range/perfor-
mance]

A)

Rationally incorrect voltage from the 
sensor is sent to ECM, compared with 
the voltage signals from EOT sensor 
and intake air temperature sensor.

• Harness or connectors

(The EOT sensor circuit is open or 
shorted)

• EOT sensor

B)

The comparison result of signals trans-
mitted to ECM from each temperature 
sensor (IAT sensor, ECT sensor, FTT 
sensor, and EOT sensor) shows that the 
signal voltage of the EOT sensor is high-
er/lower than that of other temperature 
sensors when the engine is started with 
its cold state.

• Harness or connectors

(High or low resistance in the EOT 
sensor circuit)

• EOT sensor

EC-278

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0196 EOT SENSOR

2.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure 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 11 V or more at idle.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE FOR MULFUNCTION A-I

1. Start engine and warm it up to normal operating temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Start engine and let it idle for 5 minutes and 10 seconds.

6. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-280, "Diagnosis Procedure"

.

NO

>> GO TO 4.

4.

PERFORM DTC CONFIRMATION PROCEDURE FOR MULFUNCTION A-II

With CONSULT

1. Select “DATA MONITOR” mode with CONSULT.

2. Check that “COOLAN TEMP/S” indicates above 80

°C (176°F).

If it is above 80

°C (176°F), go to the following steps.

If it is below 80

°C (176°F), warm engine up until “COOLAN TEMP/S” indicates more than 80°C (176°F).

Then perform the following steps.

3. Turn ignition switch OFF and soak the vehicle in a cool place.

4. Turn ignition switch ON.

NOTE:

Do not turn ignition switch OFF until step 8.

5. Select “DATA MONITOR” mode with CONSULT.

6. Check the following.

If they are within the specified range, perform the following steps.

If they are out of the specified range, soak the vehicle to meet the above conditions. Then perform the fol-

lowing steps.

NOTE:

• Do not turn ignition switch OFF.

• If it is supposed to need a long period of time, do not deplete the battery.

7. Start engine and let it idle for 5 minutes.

8. Check 1st trip DTC.

With GST

Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-280, "Diagnosis Procedure"

.

NO

>> GO TO 5.

5.

PERFORM COMPONENT FUNCTION CHECK (FOR MULFUNCTION B)

Perform component function check. Refer to 

EC-280, "Component Inspection"

.

NOTE:

COOLAN TEMP/S

Below 40

°C (104°F)

INT/A TEMP SE

Below 40

°C (104°F)

Difference between “COOLAN TEMP/S” and “INT/A TEMP SE”

Within 6

°C (11°F)

P0196 EOT SENSOR

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Use the component function check to check the overall function of the EOT sensor circuit. During this check, a

1st trip DTC might not be confirmed.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-280, "Diagnosis Procedure"

.

6.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure 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, do not add fuel.

• Before performing the following procedure, check that fuel level is between 1/4 and 4/4.

• Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

>> GO TO 7.

7.

PERFORM DTC CONFIRMATION PROCEDURE B

1. Start engine and let it idle for 60 minutes.

2. Move the vehicle to a cool place.

NOTE:

Cool the vehicle in an environment of ambient air temperature between 

−10°C (14°F) and 35°C (95°F).

3. Turn ignition switch OFF and soak the vehicle for 12 hours.

CAUTION:

Never turn ignition switch ON during soaking.

NOTE:

The vehicle must be cooled with the food open.

4. Start engine and let it idle for 5 minutes or more.

CAUTION:

Never turn ignition switch OFF during idling.

5. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-280, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Component Function Check

INFOID:0000000010094972

1.

CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR

1. Turn ignition switch OFF.

2. Disconnect EOT sensor harness connector.

3. Remove EOT sensor. Refer to 

EC-38, "Component Parts Location"

.

4. Check resistance between EOT sensor terminals by heating

with hot water as shown in the figure.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Proceed to 

EC-280, "Diagnosis Procedure"

.

2.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

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