Nissan Qashqai J11. Manual — part 550
EC9-356
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P1675 ENGINE COOLANT TEMPERATURE
P1675 ENGINE COOLANT TEMPERATURE
DTC Logic
INFOID:0000000010507878
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.
2.
After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC CONFIRMATION PROCEDURE
1.
PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to
EC9-356, "Component Function Check"
.
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 inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
EC9-357, "Diagnosis Procedure"
Component Function Check
INFOID:0000000010507879
1.
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.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?
YES
>> Proceed to
EC9-357, "Diagnosis Procedure"
.
NO
>> GO TO 2.
2.
PERFORM COMPONENT FUNCTION CHECK-2
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1675
—
(—)
When engine coolant temperature is too high.
• Cooling fan
• Radiator hose
• Radiator
• Radiator cap
• Water pump
• Thermostat
• Engine coolant bypass
valve
• Engine coolant temper-
ature sensor
SEF621W
P1675 ENGINE COOLANT TEMPERATURE
EC9-357
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
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EC9
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Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES
>> Proceed to
EC9-357, "Diagnosis Procedure"
.
NO
>> GO TO 3.
3.
PERFORM COMPONENT FUNCTION CHECK-3
1.
Start engine and let it idle.
2.
Turn air conditioner switch and blower fan switch ON.
3.
Make sure that cooling fan operates at low speed.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Proceed to
EC9-357, "Diagnosis Procedure"
.
4.
PERFORM COMPONENT FUNCTION CHECK-4
1.
Turn ignition switch OFF.
2.
Turn air conditioner switch and blower fan switch OFF.
3.
Disconnect engine coolant temperature sensor harness connector.
4.
Connect 150
Ω
resistor to engine coolant temperature sensor harness connector.
5.
Restart engine and make sure that cooling fan operates at higher speed than low speed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
EC9-357, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010507880
1.
CHECK COOLING FAN OPERATION
Check cooling fan operation.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning part.
2.
CHECK COOLING SYSTEM FOR LEAK-1
Check cooling system for leak.
Is leakage detected?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
CHECK COOLING SYSTEM FOR LEAK-2
Check the following for leak.
• Hose
• Radiator
• Radiator cap
• Water pump
• Reservoir tank
>> Repair or replace malfunctioning part.
4.
CHECK RADIATOR CAP
Check radiator cap.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace radiator cap.
5.
CHECK ENGINE COOLANT BYPASS VALVE
Check engine coolant bypass valve system. Refer to
EC9-382, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 6.
EC9-358
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P1675 ENGINE COOLANT TEMPERATURE
NO
>> Repair or replace error-detected parts.
6.
CHECK THERMOSTAT
Check thermostat.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace thermostat.
7.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine coolant temperature sensor routing circuit. Refer to
EC9-203, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> Perform overheating cause analysis. Refer to
CO-87, "Troubleshooting Chart"
NO
>> Replace engine coolant temperature sensor.
P2002 DIESEL PARTICULATE FILTER
EC9-359
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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EC9
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P2002 DIESEL PARTICULATE FILTER
DTC Logic
INFOID:0000000010309370
DTC DETECTION LOGIC
NOTE:
If DTC P2002 is displayed with following DTC, perform the trouble diagnosis for following DTC. Refer
to
• 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.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC P2002 can not duplicate.
>> Proceed to
EC9-359, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010309371
1.
CHECK DIESEL PARTICULATE FILTER
EC9-359, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace diesel particulate filter.
2.
CHECK INTAKE AIR SYSTEM
Check the intake air system for leakage.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts and then GO TO 3.
3.
PERFORM SELF-DIAGNOSIS
Perform “Self-diagnostic results” of “ENGINE” using CONSULT.
Is any DTC detected?
YES
>> Replace diesel particulate filter.
NO
>> Perform “SERVICE REGENERATION”. Refer to
.
Component Inspection
INFOID:0000000010309372
1.
CHECK DIESEL PARTICULATE FILTER
Check diesel particulate filter for damage.
Is the inspection result normal?
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P2002
PARTICLE FILTER
(Diesel particulate filter efficiency
below threshold bank 1)
• 1.DEF:CLOGGED
• 2.DEF: COMPONENT IN
POOR CONDITION
• 3.DEF: OFFSET IMPLAUSI-
BLE
Diesel particulate filter function does not op-
erate properly.
Diesel particulate filter
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