Nissan X-Trail 32. Manual - part 820

COOLING FAN

EC-409

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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COOLING FAN

Component Function Check

INFOID:0000000010775300

1.

CHECK COOLING FAN FUNCTION

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “COOLING FAN (DUAL)” in “ACTIVE TEST” mode of “IPDM E/R” using CONSULT.

3.

Touch “LOW”,  “HI” on the CONSULT screen.

4.

Check that cooling fan operates.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-409, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010775301

1.

CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect cooling fan relays-2, -3.

3.

Turn ignition switch ON.

4.

Check the voltage between cooling fan relays-2, -3 harness connectors and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble diagnosis for power supply circuit.

2.

CHECK COOLING FAN MOTOR CIRCUIT-1

Check the voltage between cooling fan relays-2, -3 harness connectors and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK COOLING FAN RELAY OUTPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connectors.

3.

Check the continuity between cooling fan relay-2, -3 harness connectors and IPDM E/R harness connec-
tor.

+

−

Voltage

Cooling fan relay

Connector

Terminal

F56

(cooling fan relay-2)

1

Ground

Battery voltage

F57

(cooling fan relay-3)

+

−

Voltage

Cooling fan relay

Connector

Terminal

F56

(cooling fan relay-2)

3

Ground

Battery voltage

F57

(cooling fan relay-3)

EC-410

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

COOLING FAN

4.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

4.

CHECK COOLING FAN MOTOR POWER SUPPLY CIRCUIT

1.

Disconnect cooling fan motor-1 harness connector.

2.

Check the voltage between cooling fan motor-1 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Perform trouble diagnosis for power supply circuit.

5.

CHECK COOLING FAN MOTOR CIRCUIT-2

1.

Check the continuity between cooling fan relay-2, -3 harness connectors and cooling fan motor-1, -2 har-
ness connectors.

2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace error-detected parts.

6.

CHECK COOLING FAN MOTOR CIRCUIT-3

1.

Check the continuity between IPDM E/R harness connector and cooling fan motor-2 harness connector.

+

−

Continuity

Cooling fan relay

IPDM E/R

Connector

Terminal

Connector

Terminal

F56

(cooling fan relay-2)

2

F74

107

Existed

F57

(cooling fan relay-3)

106

+

−

Voltage

Cooling fan motor-1

Connector

Terminal

F52

1 

Ground

Battery voltage

2

+

−

Continuity

Cooling fan relay

Cooling fan motor-1

Connector

Terminal

Connector

Terminal

F56

(cooling fan relay-2)

3

F52

3

Exisited

4

F57

(cooling fan relay-3)

3

4

+

−

Continuity

IPDM E/R

Cooling fan motor-2

Connector

Terminal

Connector

Terminal

F73

85

F53

1

Existed

2

COOLING FAN

EC-411

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK COOLING FAN MOTOR CIRCUIT-4

1.

Check the continuity between cooling fan relay-3 harness connectors and ground.

2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK COOLING FAN MOTOR CIRCUIT-5

1.

Check the continuity between cooling fan relay-2 harness connectors and cooling fan motor-2 harness
connector.

2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace error-detected parts.

9.

CHECK COOLING FAN MOTOR CIRCUIT-6

1.

Check the continuity between cooling fan motor-2 harness connector and ground.

2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace error-detected parts.

10.

CHECK COOLING FAN RELAY-2 AND -3

Refer to 

EC-412, "Component Inspection (Cooling Fan Relay)"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Replace malfunctioning cooling fan relay.

11.

CHECK COOLING FAN MOTORS-1 AND -2

Refer to 

EC-412, "Component Inspection (Cooling Fan Motor)"

.

+

−

Continuity

Cooling fan relay-3

Connector

Terminal

F57

5

Ground

Existed

+

−

Continuity

Cooling fan relay-2

Cooling fan motor-2

Connector

Terminal

Connector

Terminal

F56

5

F53

1

Existed

2

+

−

Continuity

Cooling fan motor-2

Connector

Terminal

F53

3

Ground

Existed

4

EC-412

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

COOLING FAN

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Replace malfunctioning cooling fan motor. Refer to 

CO-21, "Removal and Installation"

.

12.

CHECK INTERMITTENT INCIDENT

Perform 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-60, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

Component Inspection (Cooling Fan Motor)

INFOID:0000000010775302

1.

CHECK COOLING FAN MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect cooling fan motor harness connector.

3.

Supply cooling fan motor terminals with battery voltage and check operation.

Check that cooling fan speed of condition B is higher than that of A.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace cooling fan motor. Refer to 

CO-21, "Removal and Installation"

.

Component Inspection (Cooling Fan Relay)

INFOID:0000000010775303

1.

CHECK COOLING FAN RELAYS

1.

Turn ignition switch OFF.

2.

Remove cooling fan relay-2, -3.

3.

Check the continuity between cooling fan relay-2, -3 terminals as per the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace cooling fan relay.

Cooling fan motor

Condition

Terminal

+

–

1

3 and 4

A

2

3 and 4

1 and 2

3

1 and 2

4

1, 2

3, 4

B

Cooling fan relay-2, -3

Conditions

Continuity

+

−

Terminal

3

5

12V direct current supply between termi-
nals 1 and 2

Existed

No current supply

Not existed