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Nissan X-Trail 32. Manual - part 1010

P1675 ENGINE COOLANT TEMPERATURE

EC-1169

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1675 ENGINE COOLANT TEMPERATURE

DTC Description

INFOID:0000000010935873

DTC DETECTION LOGIC

If the cooling fan or other component in the cooling system malfunctions, engine coolant temperature will rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.

CAUTION:

When a malfunction is indicated, be sure to replace the coolant. Also, replace the engine oil.
1.

Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio.

After refilling coolant, run engine to ensure that no water-flow noise is emitted.

POSSIBLE CAUSE

• Cooling fan
• Radiator hose
• Radiator
• Radiator cap
• Water pump
• Thermostat
• Engine coolant bypass valve control solenoid valve
• Engine coolant temperature sensor

FAIL-SAFE

Stop closed-loop control

DTC CONFIRMATION PROCEDURE

PERFORM COMPONENT FUNCTION CHECK-1

WARNING:

Never remove the reservoir tank cap when the engine is hot. Serious burns could be caused by high
pressure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
NOTE:
Use component function check to check the overall function of the
cooling fan. During this check, a DTC might not be confirmed.

Is the coolant level in the reservoir tank and/or radiator below the
proper range?

YES

>> Proceed to

EC-1170, "Diagnosis Procedure"

>> GO TO 2.

PERFORM COMPONENT FUNCTION CHECK-2

Confirm whether customer filled the coolant or not.
Did customer fill the coolant?

YES

>> Proceed to

EC-1170, "Diagnosis Procedure"

>> GO TO 3.

PERFORM COMPONENT FUNCTION CHECK-3

Start engine and let it idle.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1675

—
(—)

When engine coolant temperature is too high.

SEF621W

EC-1170

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1675 ENGINE COOLANT TEMPERATURE

Turn air conditioner switch and blower fan switch ON.

Make sure that cooling fan operates at low speed.

Is the inspection result normal?

YES

>> GO TO 4.

>> Proceed to

EC-1170, "Diagnosis Procedure"

PERFORM COMPONENT FUNCTION CHECK-4

Turn ignition switch OFF.

Turn air conditioner switch and blower fan switch OFF.

Disconnect engine coolant temperature sensor harness connector.

Connect 150

Ω

resistor to engine coolant temperature sensor harness connector.

Restart engine and make sure that cooling fan operates at higher speed than low speed.

Is the inspection result normal?

YES-1 >> To check malfunction symptom before repair: Refer to

GI-44, "Intermittent Incident"

YES-2 >> Confirmation after repair: INSPECTION END
NO

>> Proceed to

EC-1170, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010935875

CHECK COOLING FAN OPERATION

Check cooling fan operation.
Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace malfunctioning part.

CHECK COOLING SYSTEM FOR LEAK-1

Check cooling system for leak.

Is leakage detected?

YES

>> GO TO 3.

>> GO TO 4.

CHECK COOLING SYSTEM FOR LEAK-2

Check the following for leak.
• Hose
• Radiator
• Radiator cap
• Water pump
• Reservoir tank

>> Repair or replace malfunctioning part.

CHECK RADIATOR CAP

Check radiator cap.

Is the inspection result normal?

YES

>> GO TO 5.

>> Replace radiator cap.

CHECK ENGINE COOLANT BYPASS VALVE

Check engine coolant bypass valve system. Refer to

EC-1200, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> GO TO 6.

>> Repair or replace error-detected parts.

CHECK THERMOSTAT

Check thermostat.
Is the inspection result normal?

YES

>> GO TO 7.

P1675 ENGINE COOLANT TEMPERATURE

EC-1171

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

>> Replace thermostat.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check engine coolant temperature sensor routing circuit. Refer to

EC-1008, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> Perform overheating cause analysis. Refer to

CO-62, "Troubleshooting Chart"

>> Replace engine coolant temperature sensor.

EC-1172

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P2002 DIESEL PARTICULATE FILTER

P2002 DIESEL PARTICULATE FILTER

DTC Description

INFOID:0000000010935876

DTC DETECTION LOGIC

POSSIBLE CAUSE

Diesel particulate filter

FAIL-SAFE

• EGR valve is closed position
• Throttle control motor is opened
• Prohibit DPF regeneration

DTC CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC P2002 is displayed with following DTC, first perform the trouble diagnosis for following DTC.
• DTC U0101, U0121, U0415, P0001, P0002, P0045, P0100, P0101, P0102, P0105, P0106, P0115, P0190,

P0200, P0201, P0202, P0203, P0204, P0225, P0226, P0335, P0402, P0470, P0471, P0487, P0488,
P0544, P0560, P060A, P061A, P062B, P0638, P0641, P0651, P0697, P1544, P160C, P160D, P1641,
P1642, P1643, P1650, P2080, P2100, P2119, P2120, P2226, P2263 and P253F.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to

EC-908, "DTC Index"

>> GO TO 2.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P2002 can not duplicate.

>> Proceed to

EC-1172, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010935877

CHECK DTC PRIORITY

If DTC P2002 is displayed with following DTC, first perform the trouble diagnosis for following DTC.
• DTC U0101, U0121, U0415, P0001, P0002, P0045, P0100, P0101, P0102, P0105, P0106, P0115, P0190,

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to

EC-908, "DTC Index"

>> GO TO 2.

CHECK DIESEL PARTICULATE FILTER

Refer to

EC-1173, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 3.

>> Replace diesel particulate filter.