Nissan Tiida C11. Manual - part 485

EC-590

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

ASCD BRAKE SWITCH

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector M69,E7 (LHD models)
• Harness connector M25,M201 (RHD models)
• 10A fuse (No. 2)
• Harness for open or short between ASCD brake switch and fuse

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

9.

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check the continuity between ASCD brake switch harness connector and ASCD clutch switch harness
connector.

3.

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

Is the inspection result normal?

YES 

>> GO TO 10.

NO

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

10.

CHECK ASCD BRAKE SWITCH

Refer to 

EC-591, "Component Inspection (ASCD Brake Switch)"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace ASCD brake switch.

11.

CHECK ASCD CLUCH SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector

3.

Check the continuity between ASCD cluch switch harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES 

>> GO TO 12.

NO

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

12.

CHECK ASCD CLUTCH SWITCH

Refer to 

EC-591, "Component Inspection (ASCD Clutch Switch)"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace ASCD clutch switch.

13.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

ASCD brake switch

ASCD clutch switch

Continuity

Connector

Terminal

Connector

Terminal

E36 (LHD models)

M205 (RHD models)

2

E35 (LHD models)

M206 (RHD models)

1

Existed

ASCD cluch switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E35 (LHD models)

M206 (RHD models)

2

E16

100

Existed

ASCD BRAKE SWITCH

EC-591

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

>> INSPECTION END

Component Inspection (ASCD Brake Switch)

INFOID:0000000001693419

1.

CHECK ASCD BRAKE SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

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-6, "Inspection and Adjustment"

.

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:0000000001693420

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, "On-vehicle 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-592

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

ASCD INDICATOR

ASCD INDICATOR

Description

INFOID:0000000001693421

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-424, "System Description"

 for the ASCD function.

Component Function Check

INFOID:0000000001693422

1.

ASCD INDICATOR FUNCTION

Check ASCD indicator under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-592, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693423

1.

CHECK DTC

Check that DTC U1000 or U1001 is not displayed.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble diagnosis for DTC U1000, U1001. Refer to 

EC-481, "DTC Logic"

.

2.

CHECK COMBINATION METER OPERATION

Refer to 

MWI-22, "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-55, "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-593

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

COOLING FAN

Description

INFOID:0000000001693424

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

EC-433, "System Diagram"

 for cooling fan operation.

Component Function Check

INFOID:0000000001693425

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. Refer to 

EC-593, "Diagnosis Procedure"

.

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.

Perform IPDM E/R auto active test and check cooling fan motors operation.

2.

Make sure that cooling fan operates at high speed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check cooling fan high speed control circuit. Refer to 

EC-593, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693426

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

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

Is the inspection result normal?

YES-2 >> With A/C models: GO TO 3.
YES-2 >> Without A/C models: GO TO 5.
NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• 50A fusible link (letter J) (with A/C models)
• 40A fusible link (letter J) (without A/C models)
• Harness for open or short between IPDM E/R and battery 

IPDM E/R

Ground

Continuity

Connector

Terminal

E44

22

Ground

Existed