Nissan Tiida C11. Instruction — part 579

EC-966

< COMPONENT DIAGNOSIS >

[MR18DE]

ASCD BRAKE SWITCH

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace ASCD clutch switch.

8.

CHECK INTERMITTENT INCIDENT

Refer to

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (ASCD Brake Switch)

INFOID:0000000001161956

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:0000000001161957

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.

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

ASCD BRAKE SWITCH

EC-967

< COMPONENT DIAGNOSIS >

[MR18DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD clutch switch.

Terminals

Condition

Continuity

1 and 2

Clutch pedal

Fully released

Existed

Slightly depressed

Not existed

EC-968

< COMPONENT DIAGNOSIS >

[MR18DE]

ASCD INDICATOR

ASCD INDICATOR

Description

INFOID:0000000001161958

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-728, "System Description"

for the ASCD function.

Component Function Check

INFOID:0000000001161959

1.

ASCD INDICATOR FUNCTION

Check ASCD indicator under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to

EC-968, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001161960

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-793, "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-969

< COMPONENT DIAGNOSIS >

[MR18DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

COOLING FAN

Description

INFOID:0000000001161961

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

EC-737, "System Diagram"

for cooling fan operation.

Component Function Check

INFOID:0000000001161962

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-969, "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-969, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001161963

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