Nissan Qashqai (2007-2010). Manual - part 413

ASCD BRAKE SWITCH

EC-1171

< COMPONENT DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

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3.

Check the continuity between ASCD brake switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK ASCD BRAKE SWITCH-II

1.

Adjust ASCD brake switch installation. Refer to 

BR-8, "Inspection and Adjustment"

 (LHD miodels) or

BR-

52, "Inspection and Adjustment"

 (RHD models).

2.

Check the continuity between ASCD brake switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD brake switch.

Component Inspection (ASCD Clutch Switch)

INFOID:0000000001094288

1.

CHECK ASCD CLUTCH SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD clutch switch harness connector.

3.

Check the continuity between ASCD clutch switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK ASCD CLUTCH SWITCH-II

1.

Adjust ASCD clutch switch installation. Refer to 

CL-5, "Inspection and Adjustment"

.

2.

Check the continuity between ASCD clutch switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD clutch switch.

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2

Clutch pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2

Clutch pedal

Fully released

Existed

Slightly depressed

Not existed

EC-1172

< COMPONENT DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

ASCD INDICATOR

ASCD INDICATOR

Description

INFOID:0000000001094289

ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE lamp illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that ASCD
system is ready for operation.
SET lamp illuminates when following conditions are met. 
• CRUISE lamp is illuminated.
• SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of ASCD

setting.

SET lamp remains lit during ASCD control.
Refer to 

EC-677, "System Description"

 for the ASCD function.

Component Function Check

INFOID:0000000001094290

1.

ASCD INDICATOR FUNCTION

Check ASCD indicator under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-1176, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001094291

1.

CHECK DTC

Check that DTC U1001 is not displayed.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble diagnosis for DTC U1001. Refer to 

EC-740, "DTC Logic"

.

2.

CHECK COMBINATION METER OPERATION

Refer to 

MWI-23, "CONSULT-III Function (METER/M&A)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check combination meter circuit. Refer to  

MWI-4, "METER SYSTEM : System Diagram"

.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

ASCD INDICATOR

CONDITION

SPECIFICATION

CRUISE LAMP

• Ignition switch: ON

• MAIN switch: Pressed at the 

1st time 

→

at the 2nd time

ON 

→

 OFF

SET LAMP

• MAIN  switch:  ON
• When vehicle speed: Be-

tween 40 km/h (25 MPH) and 
144 km/h (89 MPH)

• ASCD: Operating

ON

• ASCD: Not operating

OFF

COOLING FAN

EC-1173

< COMPONENT DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

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COOLING FAN

Description

INFOID:0000000001094292

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:0000000001094293

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:0000000001094294

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-1174

< COMPONENT DIAGNOSIS >

[MR20DE (WITHOUT 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-1179, "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