Nissan Note E12. Manual - part 246

IGNITION SIGNAL

EC-323

< DTC/CIRCUIT DIAGNOSIS >

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Component Inspection (Condenser)

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1.

CHECK CONDENSER

1. Turn ignition switch OFF.

2. Disconnect condenser harness connector.

3. Check resistance between condenser terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace condenser.

Terminals

Resistance [at 25

°C (77°F)]

1 and 2

Above 1 M

Ω

EC-324

< DTC/CIRCUIT DIAGNOSIS >

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MALFUNCTION INDICATOR LAMP

MALFUNCTION INDICATOR LAMP

Component Function Check

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1.

CHECK MIL FUNCTION

1. Turn ignition switch ON.

2. Make sure that MIL lights up.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-324, "Diagnosis Procedure"

.

Diagnosis Procedure

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1.

CHECK DTC

Check that DTC UXXXX is not displayed.
Is DTC detected?

YES

>> Perform trouble diagnosis for DTC UXXXX.

NO

>> GO TO 2.

2.

CHECK COMBINATION METER

Check DTC with combination meter. Refer to 

MWI-20, "DTC Index"

.

Is DTC detected?

YES

>> Perform troubleshooting relevant to DTC indicated.

NO

>> GO TO 3.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-48, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

REFRIGERANT PRESSURE SENSOR

EC-325

< DTC/CIRCUIT DIAGNOSIS >

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REFRIGERANT PRESSURE SENSOR

Component Function Check

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1.

CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION

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

2. Turn A/C switch and blower fan switch ON.

3. Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-325, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009022685

1.

CHECK GROUND CONNECTION

1. Turn A/C switch and blower fan switch OFF.

2. Stop engine.

3. Turn ignition switch OFF.

4. Check ground connection E15. Refer to Ground Inspection in 

GI-44, "Circuit Inspection"

. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1. Disconnect refrigerant pressure sensor harness connector.

2. Turn ignition switch ON.

3. Check the voltage between refrigerant pressure sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

• Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-

tor.

ECM

Voltage

Connector

Terminal

+

−

E16

101

(Refrigerant pressure sensor signal)

98

1.0 - 4.0V

Refrigerant pressure sensor

Ground

Voltage

Connector

Terminal

E17

3

Ground

Approx. 5 V

EC-326

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

REFRIGERANT PRESSURE SENSOR

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.

• Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between ECM harness connector and refrigerant pressure sensor harness connec-

tor.

2. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.

• Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace refrigerant pressure sensor. Refer to 

HAC-49, "Removal and Installation"

.

NO

>> Repair or replace. 

Refrigerant pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E17

1

E16

98

Existed

Refrigerant pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E17

2

E16

85

Existed