Nissan Qashqai J11. Manual - part 441

ECK-324

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1544 EGT SENSOR 2

P1544 EGT SENSOR 2

DTC Logic

INFOID:0000000010289964

DTC DETECTION LOGIC

NOTE:
If DTC P1544 is displayed with other DTC, perform trouble diagnosis for the other DTC. Refer to 

ECK-

97, "DTC Index"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P1544 can not duplicate.

>> Proceed to 

ECK-324, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010289965

1.

CHECK EXHAUST LEAKAGE

Check exhaust leakage. Refer to 

EX-14, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts. And then GO TO 10.

2.

CHECK HARNESS CONNECTOR CONNECTIONS

Check harness connector connection of the following items.
• ECM
• Exhaust gas temperature sensor
• TC boost sensor
• A/F sensor
• Exhaust electric throttle control actuator
• Injectors

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts. And then GO TO 10.

3.

CHECK EXHAUST GAS TEMPERATURE (EGT) SENSOR 2 POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect EGT sensor 2 harness connector.

3.

Turn ignition switch ON.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1544

TEMP SEN UPSTREAM OF 
PF
(Temperature sensor up-
stream of particulate filter)
• 1.DEF: SIGNAL OUTSIDE 

LOWER LIMIT

• 2.DEF: SIGNAL OUTSIDE 

UPPER LIMIT

• 3.DEF: OPERATION TEM-

PERATURE TOO HIGH

• 4.DEF: SIGNAL INCO-

HERENCE

• 5.DEF: IMPROPER SIG-

NAL SHAPE

• 6.DEF: NO SIGNAL SPE-

CIFIC SUBTYPE

• Diesel particulate filter temperature is more than 

790 

°

C (1,454 

°

F).

• Diesel particulate filter temperature is extremely 

low.

• Harness or connectors

(Exhaust gas temperature sen-
sor 2 circuit is open or shorted.)

• Exhaust gas temperature sen-

sor 2

P1544 EGT SENSOR 2

ECK-325

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4.

Check the voltage between EGT sensor 2 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK EXHAUST GAS TEMPERATURE (EGT) SENSOR 2 POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and EGT sensor 2 harness connector.

4.

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

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts. And then GO TO 10.

5.

CHECK EXHAUST GAS TEMPERATURE (EGT) SENSOR 2 SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and EGT sensor 2 harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts. And then GO TO 10.

6.

CHECK EXHAUST GAS TEMPERATURE SENSOR 2

Refer to 

ECK-326, "Component Inspection (Exhaust Gas Temperature Sensor 2)"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace error-detected parts. And then GO TO 10.

7.

CHECK TC BOOST SENSOR ROUTING CIRCUIT

Refer to 

ECK-197, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace error-detected parts. And then GO TO 10.

8.

CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR ROUTING CIRCUIT

Refer to 

ECK-296, "Diagnosis Procedure"

.

Is the inspection result normal?

+

−

Voltage

(Approx.)

EGT sensor 2

Connector

Terminal

F109

1

Ground

5 V

+

−

Continuity

ECM

EGT sensor 2

Connector

Terminal

Connector

Terminal

F81

108

F109

1

Existed

+

−

Continuity

ECM

EGT sensor 2

Connector

Terminal

Connector

Terminal

F81

123

F109

2

Existed

ECK-326

< DTC/CIRCUIT DIAGNOSIS >

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P1544 EGT SENSOR 2

YES

>> GO TO 9.

NO

>> Replace error-detected parts. And then GO TO 10.

9.

CHECK FUEL INJECTOR ROUTING CIRCUIT

Refer to 

ECK-214, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace error-detected parts. And then GO TO 10.

10.

CHECK DIESEL PARTICULATE FILTER

Refer to 

EX-19, "Inspection"

.

Is the inspection result normal?

YES-1 (Every inspection result are normal)>>Check intermittent incident. Refer to 

GI-41, "Intermittent Inci-

dent"

.

YES-2 (After repairing any malfunctioning part)>>INSPECTION END
NO

>> Replace diesel particulate filter.

Component Inspection (Exhaust Gas Temperature Sensor 2)

INFOID:0000000010289966

1.

CHECK EXHAUST GAS TEMPERATURE SENSOR 2

1.

Disconnect exhaust gas temperature sensor 2 harness connector.

2.

Check resistance between exhaust gas temperature sensor 2 terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace exhaust gas temperature sensor 2.

Exhaust gas temperature sensor 2

Condition

Resistance

k

Ω

+

-

Terminal

1

2

Temperature

°

 C (

°

F)

20 (68)

89.309 - 159.795

100 (212)

22.96 - 51.16

300 (572)

2.261 - 2.975

500 (932)

0.640 - 0.709

600 (1112)

0.406 - 0.442

750 (1382)

0.230 - 0.254

P1546 EXHAUST GAS TEMPERATURE

ECK-327

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P1546 EXHAUST GAS TEMPERATURE

DTC Logic

INFOID:0000000010289967

DTC DETECTION LOGIC

NOTE:
If DTC P1546 is displayed with following DTC, first perform the trouble diagnosis for following DTC.
Refer to 

ECK-97, "DTC Index"

.

• DTC P0001, P0002, P0101, P0190, P0200, P0201, P0202, P0203, P0204, P0627, P1453, P1544 and

P2002.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P1546 can not duplicate.

>> Proceed to 

ECK-327, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010289968

1.

CHECK OTHER DTC

If DTC P1546 is displayed with other DTC, perform trouble diagnosis for other DTC.

>> INSPECTION END.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1546

TEMP. UPSTREAM OF PF
(Temperature upstream of particulate fil-
ter)
• 1.DEF: EXCESSIVE TEMPERATURE

Diesel particulate filter temperature is more 
than 505 

°

C (941 

°

F).

Diesel particulate filter