Nissan Qashqai (2007-2010). Manual — part 349

COOLING FAN

EC-915

< COMPONENT DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

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COOLING FAN

Description

INFOID:0000000001089515

Cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Refer to

EC-685, "System Diagram"

for cooling fan operation.

Component Function Check

INFOID:0000000001089516

1.

CHECK COOLING FAN LOW SPEED FUNCTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III and touch “LOW” on the CON-
SULT-III screen.

3.

Make sure that cooling fans operates at low speed.

Without CONSULT-III

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 2.

NO

>> Check cooling fan low speed control circuit.

2.

CHECK COOLING FAN HIGH SPEED FUNCTION

With CONSULT-III

1.

Touch “HI” on the CONSULT-III screen.

2.

Make sure that cooling fans operates at higher speed than low speed.

Without CONSULT-III

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

>> Check cooling fan high speed control circuit.

Diagnosis Procedure

INFOID:0000000001089517

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector and cooling fan relay-3 harness connector.

3.

Check the voltage between IPDM E/R harness connector or cooling fan relay-3 harness connector and
ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.

IPDM E/R

cooling fan relay-3

Ground

Voltage

Connector

Terminal

Connec-

tor

Terminal

E14

53

E59

1

Ground

Battery voltage

3

EC-916

< COMPONENT DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

COOLING FAN

• 50A fusible link (letter M)
• Harness for open or short between IPDM E/R cooling fan relay-3 and battery

>> Repair or replace malfunctioning part.

3.

CHECK COOLING FAN MOTORS CIRCUIT FOR OPEN AND SHORT

1.

Disconnect cooling fan motor harness connector.

2.

Check the continuity between IPDM E/R harness connector or cooling fan relay-3 harness connector and
cooling fan motor harness connector.

3.

Check the continuity between cooling fan relay-3 harness connector and IPDM E/R harness connector.

4.

Check the continuity between cooling fan motor harness connector or IPDM E/R harness connector and
ground.

5.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness for open or short between cooling fan motor and IPDM E/R
• Harness for open or short between cooling fan motor and cooling fan relay
• Harness for open or short between cooling fan relay-3 and IPDM E/R
• Harness for open or short between cooling fan motor and ground
• Harness for open or short between IPDM E/R and ground
• Resistor E57

>> Repair or replace malfunctioning part.

5.

CHECK GROUND CONNECTION

Check ground connection E21. Refer to Ground Inspection in

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace ground connection.

6.

CHECK COOLING FAN RELAYS

Refer to

EC-920, "Component Inspection (Cooling Fan Relay)"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace malfunctioning cooling fan relay.

Cooling fan relay-3

IPDM E/R

Cooling fan motor

Continuity

Connector

Terminal

Connector

Terminal

Connec-

tor

Terminal

E59

2

E14

52

E3

1

Existed

Cooling fan relay-3

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E59

4

E13

48

Existed

Cooling fan motor

IPDM E/R

Ground

Continuity

Connector

Terminal

Connector

Terminal

E3

2

E10

5

Ground

Existed

6

COOLING FAN

EC-917

< COMPONENT DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

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7.

CHECK COOLING FAN MOTOR

Refer to

EC-920, "Component Inspection (Cooling Fan Motor)"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace malfunctioning cooling fan motor.

8.

CHECK INTERMITTENT INCIDENT

Perform

GI-39, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace harness or connector.

Component Inspection (Cooling Fan Motor)

INFOID:0000000001089518

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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace cooling fan motor.

Component Inspection (Cooling Fan Relay)

INFOID:0000000001089519

1.

CHECK COOLING FAN RELAY

1.

Turn ignition switch OFF.

2.

Remove cooling fan relay-3.

3.

Check the continuity between cooling fan relay terminals under
the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace cooling fan relay.

Terminals

Operation

(+)

(–)

1

2

Cooling fans operates .

Terminals

Conditions

Continuity

1 and 2

12V direct current supply between terminals 1 and 2

Existed

No current supply

Not existed

JMBIA0452ZZ

EC-918

< COMPONENT DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ELECTRICAL LOAD SIGNAL

ELECTRICAL LOAD SIGNAL

Description

INFOID:0000000001089520

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.

Component Function Check

INFOID:0000000001089521

1.

CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

1.

Turn ignition switch ON.

2.

Connect CONSULT-III and select “DATA MONITOR” mode.

3.

Select “LOAD SIGNAL” and check indication under the following conditions.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to

EC-921, "Diagnosis Procedure"

.

2.

CHECK LIGHTING SWITCH FUNCTION

Check “LOAD SIGNAL” indication under the following conditions.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Go to

EC-921, "Diagnosis Procedure"

.

3.

CHECK HEATER FAN CONTROL SWITCH FUNCTION

Select “HEATER FAN SW” and check indication under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-921, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001089522

1.

INSPECTION START

Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to

EC-921, "Compo-

nent Function Check"

.

Which circuit is related to the incident?

Rear window defogger>>GO TO 2
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.

2.

CHECK REAR WINDOW DEFOGGER SYSTEM

Refer to

DEF-4, "System Diagram"

.

Monitor item

Condition

Indication

LOAD SIGNAL

Rear window defogger switch

ON

ON

OFF

OFF

Monitor item

Condition

Indication

LOAD SIGNAL

Lighting switch

ON at 2nd position

ON

OFF

OFF

Monitor item

Condition

Indication

HEATER FAN SW

Heater fan control switch

ON

ON

OFF

OFF