Nissan X-Trail 32. Manual - part 1004

P160D ECM

EC-1145

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

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P160D ECM

DTC Description

INFOID:0000000010935849

DTC DETECTION LOGIC

POSSIBLE CAUSE

ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-1145, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935850

1.

INSPECTION START

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Turn ignition switch OFF and wait for 1 minute.

4.

Turn ignition switch ON and wait at least 1 second.

5.

Perform the self-diagnosis.

Is the DTC P160D displayed again?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

REPLACE ECM

1.

Replace ECM.

2.

Perform 

EC-944, "Work Procedure"

.

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P160D

COMPUTER
(Computer)
• 1.DEF: VALUES OUTSIDE TOLERANC-

ES

ECM internal power supply malfunction.

EC-1146

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1620 ECM

P1620 ECM

DTC Description

INFOID:0000000010935851

DTC DETECTION LOGIC

POSSIBLE CAUSE

ECM

FAIL-SAFE

Stop closed-loop control

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P1620 can not duplicate.

>> Proceed to 

EC-1146, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010935852

1.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

1.

Turn ignition switch OFF.

2.

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK AIR FUEL RATIO (A/F) SENSOR HARNESS CONNECTOR CONNECTIONS

Check A/F sensor harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK A/F SENSOR CIRCUIT FOR OPEN AND SHORT

Check A/F sensor circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1620

PROPOR RICH SEN FNC
(Proportional richness sensor function)
• 1.DEF: VALUES OUTSIDE TOLERANC-

ES

ECM function is malfunctioning.

+

-

Continuity

ECM

A/F sensor

Connector

Terminal

Connector

Terminal

F117

89

F166

3

Existed

F118

115

6

116

2

119

1

P1620 ECM

EC-1147

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

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4.

CHECK INTERMITTENT INCIDENT

Perform 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

REPLACE A/F SENSOR

Replace A/F sensor.

CAUTION:

• Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a

hard surface such as a concrete floor; use a new one.

• Before installing new A/F sensor, clean exhaust system threads using Heated Oxygen Sensor

Thread Cleaner tool and approved anti-seize lubricant.

>> INSPECTION END

EC-1148

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1641 THERMOPLUNGER CONTROL UNIT

P1641 THERMOPLUNGER CONTROL UNIT

DTC Description

INFOID:0000000010935853

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (Thermoplunger control unit circuit is open or shorted.)
• Thermoplunger control unit

FAIL-SAFE

Stop thermoplunger control

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON at least 2 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-1148, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935854

1.

CHECK ECM HARNESS CONNECTOR CONNECTION

1.

Turn ignition switch OFF. 

2.

Check the ECM harness connector connection. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK THERMOPLUNGER CONTROL UNIT HARNESS CONNECTOR CONNECTION

Check the thermoplunger control unit harness connector connection. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK THERMOPLUNGER CONTROL UNIT POWER SUPPLY

Check the thermoplunger control unit power supply.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1641

THMPR 1 RLY C/CIR
(Thermoplunger 1 relay control circuit)
• 1.DEF: IMPLAUSIBLE SIGNAL
• CC.0: SHORT CIRCUIT TO EARTH
• CC.1: SHORT-CIRCUIT TO +12V
• CO: OPEN CIRCUIT

• ECM detects thermoplunger control unit circuit is open circuit.
• ECM detects thermoplunger control unit circuit is short circuit to ground.
• ECM detects thermoplunger control unit circuit is short circuit to battery.