Nissan Frontier D22. Manual - part 509

IGNITION SIGNAL

EC-1139

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

10. 

CHECK IGNITION COIL

1.

Disconnect ignition coil harness connector.

2.

Check resistance as shown in the figure.

For checking secondary coil, remove distributor cap and mea-
sure resistance between coil tower metal tip 9 and terminal 7.

OK or NG

OK

>> GO TO 11.

NG

>> Replace distributor assembly.

11. 

CHECK POWER TRANSISTOR

1.

Disconnect camshaft position sensor & power transistor harness connector and ignition coil harness con-
nector.

2.

Check power transistor resistance between terminals 2 and 8.

OK or NG

OK

>> GO TO 12.

NG

>> Replace distributor assembly.

12. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-696, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

Removal and Installation

UBS00DQ7

DISTRIBUTOR

Refer to 

EM-80, "OUTER COMPONENT PARTS"

 .

Terminal

Resistance [at 20

°C 

(68

°F)]

7 - 8 (Primary coil)

Approx. 1.0

Ω

7 - 9 (secondary coil)

Approx. 10 k

Ω

SEF013S

AEC657A

Terminals

Resistance

Result

2 and 8

Except 0

Ω

OK

0

Ω

NG

SEF015S

EC-1140

[VG33E]

INJECTOR CIRCUIT

INJECTOR CIRCUIT

PFP:16600

Component Description

UBS00DQ8

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

CONSULT-II Reference Value in Data Monitor Mode

UBS00DQ9

Specification data are reference values.

SEF812J

MONITOR ITEM

CONDITION

SPECIFICATION

INJ PULSE-B1
INJ PULSE-B2

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: N (A/T), Neutral (M/T)

●

No load

Idle

2.4 - 3.7 msec

2,000 rpm

1.9 - 3.3 msec

B/FUEL SCHDL

●

Engine: After warming up

●

Air conditioner switch: OFF

●

Shift lever: N (A/T), Neutral (M/T)

●

No load

Idle

1.0 - 1.6 msec

2,000 rpm

0.7 - 1.4 msec

INJECTOR CIRCUIT

EC-1141

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

UBS00DQA

BBWA0497E

EC-1142

[VG33E]

INJECTOR CIRCUIT

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than the ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure

UBS00DQB

1. 

INSPECTION START

Turn ignition switch to START.
Is any cylinder ignited?

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

 CONDITION

DATA (DC Voltage)

102
104
106
109

111

113

W/B
W/R
W/G
W/L
W/PU
W

Injector No. 1
Injector No. 3
Injector No. 5
Injector No. 2
Injector No. 4
Injector No. 6

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

SEF007V

SEF008V