Nissan Frontier D40. Manual - part 541

 

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Nissan Frontier D40. Manual - part 541

 

 

COOLING FAN

EC-855

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

CHECK COOLING FAN MOTOR

Refer to 

EC-855, "Component Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Replace cooling fan motor.

5.

CHECK INTERMITTENT INCIDENT

Perfor

GI-46, "Intermittent Incident"

.

OK or NG

OK

>> INSPETION END

NG

>> Repair or replace harness or connector. 

Component Inspection

INFOID:0000000005273873

COOLING FAN MOTOR

1.

Disconnect cooling fan motor harness connectors.

2.

Supply cooling fan motor terminals with battery voltage and
check operation.

Cooling fan motor should operate.
If NG, replace cooling fan motor.

Cooling fan speed

Cooling fan motor terminals

(+)

(

)

Low

1

3 and 4

2

3 and 4

High

1 and 2

3 and 4

SEF734W

EC-856

< COMPONENT DIAGNOSIS >

[VQ40DE]

ELECTRICAL LOAD SIGNAL

ELECTRICAL LOAD SIGNAL

Description

INFOID:0000000005273874

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

Diagnosis Procedure

INFOID:0000000005273875

1.

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I

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.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 4.

2.

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

Check “LOAD SIGNAL” indication under the following conditions.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

3.

CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION

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

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 6.

4.

CHECK REAR WINDOW DEFOGGER SYSTEM

Refer to 

DEF-3, "Repair Work Flow"

.

>> INSPECTION END

5.

CHECK HEADLAMP SYSTEM

Refer to 

EXL-4, "Work Flow"

.

>> INSPECTION END

6.

CHECK HEATER FAN CONTROL SYSTEM

Refer to 

HAC-58, "Symptom Matrix Chart"

 (Type 1) or 

HAC-129, "Symptom Matrix Chart"

 (Type 2).

Condition

Indication

Rear window defogger switch: ON

ON

Rear window defogger switch: OFF

OFF

Condition

Indication

Lighting switch: ON at 2nd position

ON

Lighting switch: OFF

OFF

Condition

Indication

Heater fan control switch: ON

ON

Heater fan control switch: OFF

OFF

ELECTRICAL LOAD SIGNAL

EC-857

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

>> INSPECTION END

EC-858

< COMPONENT DIAGNOSIS >

[VQ40DE]

FUEL INJECTOR

FUEL INJECTOR

Component Description

INFOID:0000000005273876

The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector, the coil in the fuel injector is
energized. The energized coil pulls the ball valve back and allows
fuel to flow through the fuel injector into the intake manifold. The
amount of fuel injected depends upon the injection pulse duration.
Pulse duration is the length of time the fuel injector remains open.
The ECM controls the injection pulse duration based on engine fuel
needs.

Diagnosis Procedure

INFOID:0000000005273877

1.

INSPECTION START

Turn ignition switch to START.
Are any cylinders ignited?

Yes or No

Yes (With CONSULT-III)>>GO TO 2.
Yes (Without CONSULT-III)>>GO TO 3.
No

>> GO TO 7.

2.

CHECK OVERALL FUNCTION

 With CONSULT-III

1.

Start engine.

2.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.

3.

Make sure that each circuit produces a momentary engine speed drop.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 7.

3.

CHECK FUNCTION OF FUEL INJECTOR-I

 Without CONSULT-III

1.

Stop engine.

2.

Disconnect harness connector F44 (3), F201 (1)

3.

Turn ignition switch ON.

SEF375Z

2

: Vacuum tank

: Front

AWBIA0686ZZ

 

 

 

 

 

 

 

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