Nissan Qashqai (2007-2010). Manual — part 475

COOLING FAN

EC-1419

< COMPONENT DIAGNOSIS >

[K9K]

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1.

Disconnect cooling fan motor harness connector.

2.

Disconnect IPDM E/R harness connectors E13 and E14.

3.

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

4.

Check the continuity between cooling fan motor harness connector and cooling fan relay-3 harness con-
nector.

5.

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

6.

Check the continuity between IPDM E/R harness connector and ground.

7.

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

8.

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 cooling fan motor and IPDM E/R
• Harness for open or short between cooling fan motor and cooling fan relay-3
• Harness for open or short between IPDM E/R and cooling fan relay-3
• Harness for open or short between IPDM E/R and ground
• Harness for open or short between cooling fan relay-3 anf ground
• Resitor E57

>> Repair or replace malfunctioning part.

6.

CHECK COOLING FAN RELAY

Refer to

EC-1424, "Component Inspection (Cooling Fan Relay)"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace malfunctioning cooling fan relay.

Cooling fan motor

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E3

1

E14

52

Existed

Cooling fan motor

Cooling fan relay-3

Continuity

Connector

Terminal

Connector

Terminal

E3

1

E59

2

Existed

IPDM E/R

Cooling fan relay-3

Continuity

Connector

Terminal

Connector

Terminal

E13

48

E59

4

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E10

5

Ground

Existed

6

Cooling fan motor

Ground

Continuity

Connector

Terminal

E3

2

Ground

Existed

EC-1420

< COMPONENT DIAGNOSIS >

[K9K]

COOLING FAN

7.

CHECK COOLING FAN MOTOR

Refer to

EC-1424, "Component Inspection (Cooling Fan Motor)"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace cooling fan motor.

8.

CHECK INTERMITTENT INCIDENT

Refer to

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:0000000001102017

1.

CHECK COOLING FAN MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect cooling fan motor harness connector E3.

3.

Supply cooling fan motor terminal 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:0000000001102018

1.

CHECK COOLING FAN RELAYS

1.

Turn ignition switch OFF.

2.

Remove cooling fan relay.

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 operate

Terminals

Conditions

Continuity

3 and 4

12V direct current supply between terminals 1 and 2

Existed

No current supply

Not existed

JMBIA0452ZZ

STOP LAMP SWITCH

EC-1421

< COMPONENT DIAGNOSIS >

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STOP LAMP SWITCH

Description

INFOID:0000000001102060

Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.

Component Function Check

INFOID:0000000001102059

1.

CHECK BRAKE SWITCH CIRCUIT

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Go to

EC-1425, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001102022

1.

CHECK BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between stop lamp switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E105, M77
• 10A fuse (No. 11)
• Harness for open or short between fuse and stop lamp switch

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

3.

CHECK BRAKE SWITCH INPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between stop lamp switch harness connector and ECM harness connector.

4.

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

ECM

Ground

Condition

Voltage

Connector

Terminal

E60

115

(Brake switch signal)

Ground

Brake pedal

Fully released

0V

Slightly depressed

Battery voltage

Stop lamp switch

Ground

Voltage

Connector

Terminal

E115

1

Ground

Battery voltage

Stop lamp switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E115

2

E60

115

Existed

EC-1422

< COMPONENT DIAGNOSIS >

[K9K]

STOP LAMP SWITCH

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK STOP LAMP SWITCH

Refer to

EC-1359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace stop lamp switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001102061

1.

CHECK STOP LAMP SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check the continuity between stop lamp switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK STOP LAMP SWITCH-II

1.

Adjust stop lamp switch installation. Refer to

BR-8, "Inspection and Adjustment"

(LHD models) or

BR-52,

"Inspection and Adjustment"

(RHD models).

2.

Check the continuity between stop lamp switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace stop lamp switch.

Terminals

Condition

Continuity

1 and 2
(Stop lamp switch)

Brake pedal

Fully released

Not existed

Slightly depressed

Existed

3 and 4
(ASCD brake switch)

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2
(Stop lamp switch)

Brake pedal

Fully released

Not existed

Slightly depressed

Existed

3 and 4
(ASCD brake switch)

Brake pedal

Fully released

Existed

Slightly depressed

Not existed