Infiniti M45 (Y34). Manual - part 490

IGNITION SIGNAL

EC-649

C

D

E

F

G

H

I

J

K

L

M

A

EC

IGNITION SIGNAL

PFP:22448

Component Description

ABS002TL

IGNITION COIL & POWER TRANSISTOR

The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil
secondary circuit.

PBIB1116E

EC-650

IGNITION SIGNAL

Wiring Diagram

ABS002TM

TBWA0307E

IGNITION SIGNAL

EC-651

C

D

E

F

G

H

I

J

K

L

M

A

EC

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 ECM terminals, such as the ground.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

12

W/L

Counter current return

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

42

W/B

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]

●

A few seconds after turning ignition switch 
OFF

0 - 1.0V

[Ignition switch: OFF]

●

More than a few seconds after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

163
166

R
R

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

EC-652

IGNITION SIGNAL

TBWA0308E