Plu

Pi
n

Sym Definition
bol

Input What
/
Outp
ut

Why

How

B1

#30

No. 3 Injector Outpu This pin is

t
used to control
the No.3 fuel
injector.

The fuel injectors are This pin is connected to

electronically
Ground inside the ECU as
controlled by the
required to turn the fuel
engine ECU.
injector ON. The fuel
injector should be wired
with one side of the
solenoid connected to
battery voltage (Ignition
switched) and one side of
the fuel injector connected
to this ECU pin.

B1

#40

Cyl 4 Injector Outpu This pin is

Driver
t
used to control
the No.4 fuel
injector.

The fuel injectors are This pin is connected to

electronically
Ground inside the ECU as
controlled by the
required to turn the fuel
engine ECU.
injector ON. The fuel
injector should be wired
with one side of the
solenoid connected to
battery voltage (Ignition
switched) and one side of
the fuel injector connected
to this ECU pin.

B1

#50

Cyl 5 Injector Outpu This pin is

Driver
t
used to control
the No.5 fuel
injector.

The fuel injectors are This pin is connected to

electronically
Ground inside the ECU as
controlled by the
required to turn the fuel
engine ECU.
injector ON. The fuel
injector should be wired
with one side of the
solenoid connected to
battery voltage (Ignition
switched) and one side of
the fuel injector connected
to this ECU pin.

B1

#60

Cyl 6 Injector Outpu This pin is

Driver
t
used to control
the No.6 fuel
injector.

The fuel injectors are This pin is connected to

electronically
Ground inside the ECU as
controlled by the
required to turn the fuel
engine ECU.
injector ON. The fuel
injector should be wired
with one side of the
solenoid connected to
battery voltage (Ignition
switched) and one side of
the fuel injector connected
to this ECU pin.

Lin
k

B1

VSV1 Intake Air

Outpu This pin is
Bypass Valve t
used to control
Vacuum
the VSV which
Switching
is used to
Valve
open / close
the Intake Air
Bypass Valve
that is a
component of
the sequential
turbo system.

The Intake Air

Control Valve allows
pressurized air to
exit the rear
turbocharger
allowing it to fully
come online as part
of the sequential
turbo system.

This pin is connected to

Ground inside the ECU as
required to turn the Intake
Air Control Valve VSV ON
allowing pressurized intake
air to open the Intake Air
Control Valve. One side of
the VSV should be wired to
this pin and one side of VSV
should be wired to battery
voltage (Main EFI Relay
switched).

B1

MOL

Main Oil
Level Switch

This pin is
used to detect
low engine oil
level.

This sensor is used

for low oil level
indication for the
dash with the data
being sent via the
Multiplex network to
the dash. It is
unknown if this
switch plays any part
in the engine control
algorithms.

This pin connects to an oil

level switch that is installed
at the sump on the front,
lower, intake side of the
engine to detect low engine
oil level. One side of the oil
level switch should be wired
to this pin and one side of
oil level switch should be
wired to ground (common
ground located at the intake
manifold).

B1

M-

ETCS-i Motor Outpu This pin is

t
used to control
the electronic
throttle control
motor.

The throttle is
controlled by an
electric motor that is
controlled by the
engine ECU. Having
the throttle
controlled by the
engine ECU allows
idle speed control,
traction control,
cruise control, etc to
be built directly into
the engine ECU
simplifying the
system.

This pin is used together

with the M+ pin to power
the electric motor to allow it
to be opened and closed by
the engine ECU as
required. The ETCS-i clutch
must be engaged for the
electric motor to be able to
open or close the throttle.
The M+ and M- pins are
triggered by the engine ECU
in a PWM fashion.

B1

M+

ETCS-i Motor Outpu This pin is

t
used to control
the electronic
throttle control
motor.

The throttle is
controlled by an
electric motor that is
controlled by the
engine ECU. Having
the throttle
controlled by the
engine ECU allows
idle speed control,
traction control,
cruise control, etc to
be built directly into
the engine ECU
simplifying the

This pin is used together

with the M- pin to power the
electric motor to allow it to
be opened and closed by
the engine ECU as
required. The ETCS-i clutch
must be engaged for the
electric motor to be able to
open or close the throttle.
The M+ and M- pins are
triggered by the engine ECU
in a PWM fashion.

Input

system.

B1

ME0
1

ETCS-i
Ground

Input

Ground

Used to supply a
This pin connects to Ground
Ground path to allow or the battery negative.
current to flow. A
separate ground is
used for the
electronic throttle
control system to
reduce noise
introduced between
systems.

B1

10

G2

Intake
Camshaft
Position
Sensor

Input

This pin is
used to detect
the location of
the intake
camshaft.

The engine ECU

needs to know the
position of the intake
camshaft for variable
intake camshaft
position control, the
camshaft position
sensor provides this
information.

B1

11

IGT

Ignition
Trigger Cyl 1
& Cyl 6

Outpu This pin is

t
used to control
the ignition for
cylinders 1 &
6.

The ignition timing is This pin is connected to

electronically
+5V inside the engine ECU
controlled by the
as required to trigger
engine ECU.
engine ignition. Ignition is
triggered on the high (+5V)
to low (0V) transition.

B1

12

IGT2

Ignition
Trigger Cyl 5
& Cyl 2

Outpu This pin is

t
used to control
the ignition for
cylinders 5 &
2.

The ignition timing is This pin is connected to

electronically
+5V inside the engine ECU
controlled by the
as required to trigger
engine ECU.
engine ignition. Ignition is
triggered on the high (+5V)
to low (0V) transition.

B1

13

IGT3

Ignition
Trigger Cyl 3
& Cyl 4

Outpu This pin is

t
used to control
the ignition for
cylinders 3 &
4.

The ignition timing is This pin is connected to

electronically
+5V inside the engine ECU
controlled by the
as required to trigger
engine ECU.
engine ignition. Ignition is
triggered on the high (+5V)
to low (0V) transition.

B1

14

B1

15

PMC

Pressure
Modulation
Control
(Wastegate)
Vacuum
Switching
Valve

Outpu This pin is

t
used to control
the VSV which
controls the
turbo
wastegate on
the front
turbo. This
VSV allows the

The Wastegate
Control Valve allows
exhaust gas to prespool the rear
turbocharger prior to
it coming online as
part of the
sequential turbo
system.

This pin is connected to

Ground inside the ECU as
required to turn the
Pressure Modulation Control
valve which is more
commonly called the
wastegate control valve ON
allowing pressurised intake
air to be diverted away from

This pin connects to the

camshaft position sensor
located to the rear of the
intake side of the engine
head which outputs 3 pulse
(reluctor pulses) per
camshaft revolution.

engine ECU to
attempt to
control boost
pressure.

B1

16

B1

17

B1

B1

the mechanical wastegate

actuator. When this VSV is
ON the mechanical
wastegate actuator will not
operate and the wastegate
will not open, this will result
in a very large amount of
boost pressure being
generated by the
turbochargers. One side of
the VSV should be wired to
this pin and one side of VSV
should be wired to battery
voltage (Main EFI Relay
switched).
/

OCV- VVTi Solenoid Outpu This pin is

t
used to control
the solenoid
that controls
position of the
intake
camshaft.

Controlling the
position of the intake
camshaft can be
used to improve
performance and
fuel economy.

This pin is used together

with the OCV+ pin to power
a solenoid that allows
engine oil pressure to be
used to vary the position of
the intake camshaft. The
OCV+ and OCV- pins are
triggered by the engine ECU
in a PWM fashion.

18

OCV
+

VVTi Solenoid Outpu This pin is

t
used to control
the solenoid
that controls
position of the
intake
camshaft.

Controlling the
position of the intake
camshaft can be
used to improve
performance and
fuel economy.

This pin is used together

with the OCV- pin to power
a solenoid that allows
engine oil pressure to be
used to vary the position of
the intake camshaft. The
OCV+ and OCV- pins are
triggered by the engine ECU
in a PWM fashion.

19

CL-

ETCS-i
Clutch

The throttle is
controlled by an
electric motor that is
controlled by the
engine ECU however
there is a clutch that
is controlled by the
engine ECU that
must be engaged for
the electric motor to
be able to move the
throttle. If the
engine ECU detects
an issue with the
ETCS-i system it will

This pin is used together

with the CL+ pin to power
the clutch that allows the
electric motor to open and
close engine throttle. The
ETCS-i clutch must be
engaged for the electric
motor to be able to open or
close the throttle.

Outpu This pin is

t
used to control
the electronic
throttle control
clutch.

disable the clutch as

a safety feature.

B1

20

CL+

ETCS-i
Clutch

Outpu This pin is

t
used to control
the electronic
throttle control
clutch.

The throttle is
controlled by an
electric motor that is
controlled by the
engine ECU however
there is a clutch that
is controlled by the
engine ECU that
must be engaged for
the electric motor to
be able to move the
throttle. If the
engine ECU detects
an issue with the
ETCS-i system it will
disable the clutch as
a safety feature.

This pin is used together

with the CL- pin to power
the clutch that allows the
electric motor to open and
close engine throttle. The
ETCS-i clutch must be
engaged for the electric
motor to be able to open or
close the throttle.

B1

21

EO1

ECU Ground

Input

Ground

Used to supply a
This pin connects to Ground
Ground path to allow or the battery negative.
current to flow.

B1

22

NE-

Crankshaft &
Intake
Camshaft
Position
Sensor
Ground

Input

This pin is
used to
provide a
Ground to
detect the
speed and
location of the
engine
crankshaft and
intake
camshaft.

The engine ECU

needs to know the
position of the
engine so that it can
accurately provide
fuel and ignition.

This pin connects to the

engine crankshaft position
sensor and the intake
camshaft position sensor.

B1

23

NE+

Crankshaft
Position
Sensor

Input

This pin is
used to detect
the speed and
location of the
engine
crankshaft.

The engine ECU

needs to know the
position of the
engine so that it can
accurately provide
fuel and ignition.

This pin connects to the

engine crankshaft position
sensor located to the lower
front of the exhaust side of
the engine near the
alternator which outputs 362 pulses (reluctor pulses)
per engine crankshaft
revolution.

B1

24

B1

25

IGF

Igniter
Verification
Signal

Input

This is pin is
used to detect
if ignition has
taken place

If no ignition is
occurring and fuel
injection continues
the spark plugs can

This pin is connected to

Ground by the Igniter for a
short period of time after a
successful ignition event

Alternator
Charge Light
Output (L)

successfully.

be fouled and
has been detected.
backfires can occur
in the exhaust, the
igniter sends a signal
to inform the engine
so that it can stop
fuel injection if
successful ignition is
not detected.

B1

26

RL

Input

This pin is
used to detect
the status of
the alternator
regulators
charge light
output.

The alternator
charge light output is
used for indication of
the alternator
charging status for
the dash with the
data being sent via
the Multiplex
network to the
dash. It is unknown
if this input plays any
part in the engine
control algorithms.

This pin connects to the

alternator regulator charge
status output and is
grounded by the alternator
regulator to indicate that
the alternator is not
charging. In normal
operation this pin should be
open circuit.

B1

27

KNK2 No.2 Knock

Input
Sensor (Rear)

This pin is
used to
measure
engine knock.

Engine knock can

occur if too much
ignition timing and
poor fuel are
present, as engine
knock can damage
an engine the engine
ECU used a knock
sensor to detect and
compensate for
knock if is detected.

This pin connects to the

signal output of the knock
sensor which is mounted
under the intake manifold,
to the rear of the engine
and screwed into the side of
the engine block. The
knock sensor is Grounded
via the engine block.
8.1kHz is the normal mode
vibration.

B1

28

KNK1 No.1 Knock

Sensor
(Front)

This pin is
used to
measure
engine knock.

Engine knock can

occur if too much
ignition timing and
poor fuel are
present, as engine
knock can damage
an engine the engine
ECU used a knock
sensor to detect and
compensate for
knock if is detected.

This pin connects to the

signal output of the knock
sensor which is mounted
under the intake manifold,
to the front of the engine
and screwed into the side of
the engine block. The
knock sensor is Grounded
via the engine block.
8.1kHz is the normal mode
vibration.

B1

29

LCKI

This pin is
used to detect
the speed of
the
airconditioning
compressor.

This speed sensor

This pin connects to the
can be used to
airconditioning compressor
detect if the
speed sensor located at the
airconditioning
bottom of the
compressor seizes or airconditioning compressor.
becomes
The other side of the
disconnected, in
airconditioning compressor
which case the
speed sensor should be
engine ECU will
connected to ground.

Input

Airconditionin Input
g Compressor
Lock Sensor

disable the
airconditioning
compressor to avoid
further damage.
B1

30

GEO
1

ETCS-i Motor
Shielding

Outpu This pin is

t
used to shield
the wires used
to control the
electronic
throttle control
electric motor.

Operation of the
electronic throttle
control electric motor
can generate a
significant amount of
electrical noise,
shielding of the wires
has been used to
reduce the amount
of electrical noise
that is transmitted
into other systems.

B1

31

EO2

ECU Ground

Input

Used to supply a
This pin connects to Ground
Ground path to allow or the battery negative.
current to flow.

Plu
g

Pi
n

Sym Definition
bol

Input What
/
Outp
ut

Why

How

B2

B2

VC

Sensor Power Outpu This pin is

t
used to supply
+5V power to
the throttle
position and
MAP sensors.

The throttle position

and MAP sensors
require regulated
and constant +5V to
operate.

This pin outputs regulated

+5V to the throttle position
sensors and the MAP
sensor.

B2

VSV2 Exhaust Gas Outpu This pin is

Control Valve t
used to control
Vacuum
the VSV which
Switching
is used to
Valve
open / close
the Exhaust
Gas Control
Valve that is a
component of
the sequential
turbo system.

The Exhaust Gas

Control Valve allows
exhaust gas to exit
the rear
turbocharger
allowing it to fully
come online as part
of the sequential
turbo system.

This pin is connected to

Ground inside the ECU as
required to turn the Exhaust
Gas Control Valve VSV ON
allowing pressurised intake
air to open the Exhaust Gas
Control Valve. One side of
the VSV should be wired to
this pin and one side of VSV
should be wired to battery
voltage (Main EFI Relay
switched).

B2

HT

The oxygen sensor

requires a certain
temperature to start
operating, to allow
this temperature to
be reached quickly

This pin connects to Ground

inside the engine ECU as
required to turn the oxygen
sensor heater on. One side
of the oxygen sensor heater
should be wired to this pin

Oxygen
Sensor
Heater

Ground

Outpu This pin is

t
used to control
the heater for
the exhaust
gas oxygen
sensor.

This pin is connected to

ground inside the engine
ECU and connects to the
shield that covers the wires
(M+ and M-) that are used
to control the electronic
throttle control electric
motor.

Lin
k

and allow the oxygen

sensor to start
operation the sensor
is heated.

and one side of oxygen

sensor heater should be
wired to battery voltage
(Main EFI Relay switched).

B2

#10

Cyl 1 Injector Outpu This pin is

Driver
t
used to control
the No.1 fuel
injector.

The fuel injectors are This pin is connected to

electronically
Ground inside the ECU as
controlled by the
required to turn the fuel
engine ECU.
injector ON. The fuel
injector should be wired
with one side of the
solenoid connected to
battery voltage (Ignition
switched) and one side of
the fuel injector connected
to this ECU pin.

B2

#20

Cyl 2 Injector Outpu This pin is

Driver
t
used to control
the No.2 fuel
injector.

The fuel injectors are This pin is connected to

electronically
Ground inside the ECU as
controlled by the
required to turn the fuel
engine ECU.
injector ON. The fuel
injector should be wired
with one side of the
solenoid connected to
battery voltage (Ignition
switched) and one side of
the fuel injector connected
to this ECU pin.

B2

PRG

Evaporative
Emission
Control
Vacuum
Switching
Valve

Outpu This pin is

t
used to control
the VSV which
is used to
allow fuel
vapour from
the charcoal
canister to
enter the
intake
manifold and
enter the
engine.

Fuel vapours from

the fuel tank are
captured in the
charcoal canister to
protect the
environment, the
PRG VSV is used to
allow these captured
emissions to be
burnt during normal
engine operation as
determined by the
engine ECU.

This pin is connected to

Ground inside the ECU as
required to turn the
Evaporative Emissions
Control Valve VSV ON
allowing fuel emissions to
pass to the intake manifold
into the engine. One side of
the VSV should be wired to
this pin and one side of VSV
should be wired to battery
voltage (Main EFI Relay
switched).

B2

MOP
S

Main Oil
Pressure
Switch

Input

This pin is
used to sense
low engine oil
pressure.

This sensor is the low

oil pressure switch
for the dash with the
data being sent via
the Multiplex
network to the dash.
It is unknown if this
switch plays any part
in the engine control
algorithms.

This pin connects to a

pressure switch that is
installed at the oil filter
assembly on the lower,
intake side of the engine to
measure engine oil
pressure. The oil pressure
switch is grounded via the
engine block.

B2

PIM

Pressure
Intake
Manifold

Input

This pin is
used to
determine the

Manifold air pressure This pin connects to the

is used for control of signal output of the MAP
the sequential turbo sensor which contains a

(MAP Sensor)

manifold air
pressure
(MAP).

system as well as
boost cut.

small sensor to measure air

pressure. A small vacuum
hose connects the MAP
sensor to the intake after
the throttle body.

B2

10

VG

Engine
Airflow

Input

This pin is
used to
determine the
engine airflow.

Engine airflow is a
primary component
in the fuel injection
control algorithm. If
the engine airflow is
known then the
amount of fuel
required to achieve a
desired air fuel ratio
can be calculated by
the engine ECU.

This pin connects to the

signal output of the airflow
sensor. The airflow sensor
is located in the engine
intake piping just after the
airfilter.

B2

11

B2

12

OX

Oxygen
Sensor

Input

This pin is
used to
determine the
exhaust gas
air fuel ratio.

The engine ECU will

aim for an air fuel
ratio near
stoichiometric
(neither rich or lean)
to enhance fuel
economy under
periods of low load.

This pin connects to the

signal output of the oxygen
sensor that is mounted in
the exhaust. The factory
oxygen sensor is a 'narrow
band' oxygen sensor that
outputs approximately 0V
when the air fuel ratio is
lean and approximately 1V
when the air fuel ratio is
rich. The engine ECU will
aim to keep the engine
running at stoichiometric by
alternating between very
slightly rich and very
slightly lean conditions, as
the sensor is only a narrow
band sensor this is a
practical way to achieve (or
very close to) the desired
stoichiometric air fuel ratio.

B2

13

Automatic
Transmission
Neutral Gear
Position
Indicator

Input

This pin is
used to
determine if
the automatic
transmission
shifter is in the
Neutral
position. This
signal is also
sent via the
Multiplex
network to the
dash for
display.

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'N' position.

B2

14

THW Water
Temperature
Sensor

Input

This pin is
used to
measure the
temperature of
the engine
coolant exiting
the engine.

The engine coolant

temperature has a
significant effect on
the engines
operation, for
example requiring
more fuel during
'warm up'
conditions. This
sensor is also the
water temperature
sensor for the dash
with the data being
sent via the Multiplex
network to the dash.

This pin connects to a

thermistor that is installed
at the engine coolant water
outlet to the radiator on the
front, upper, exhaust side of
the engine to measure
engine coolant
temperature. One side of
the thermistor should be
wired to this pin and one
side of the thermistor
should be wired to the
engine ECU pin E2
(Ground).

B2

15

VPA

Input

This pin is
used to
effectively
detect the
position of the
accelerator
pedal which
reflects the
operators
desired
throttle
position.

The operators
desired throttle
position is a useful
parameter for engine
operation,
particularly in
transient conditions
such as acceleration.

This pin measures the

variable voltage from one of
the outputs from the
position sensor that
measures how depressed
the accelerator pedal is.
The position sensor has two
outputs (VPA and VPA2)
with different responses
that allow the engine ECU
to perform diagnostics
during normal operation.

Throttle
Position
Sensor
(Demand
Position
Sensor)

B2

16

VPA2 Throttle
Position
Sensor
(Demand
Position
Sensor)

Input

This pin is
used to
effectively
detect the
position of the
accelerator
pedal which
reflects the
operators
desired
throttle
position.

The operators
desired throttle
position is a useful
parameter for engine
operation,
particularly in
transient conditions
such as acceleration.

This pin measures the

variable voltage from one of
the outputs from the
position sensor that
measures how depressed
the accelerator pedal is.
The position sensor has two
outputs (VPA and VPA2)
with different responses
that allow the engine ECU
to perform diagnostics
during normal operation.

B2

17

E1

ECU Ground

Input

Ground.

Used to supply a
This pin connects to Ground
Ground path to allow or the battery negative.
current to flow.

B2

18

E2

Sensor
Ground

Outpu Sensor ground. The throttle position,

t
airflow, air and water
temperature and
MAP sensors have a
separate ground to
ensure clear signals.

B2

19

EVG

Airflow Meter Input

Ground

Airflow meter
signal ground.

The airflow meter

sensor has a
separate signal
ground to ensure a
clear signal.

This pin is connected to

sensor Ground inside the
engine ECU. Do not
connect this pin to chassis
Ground.

B2

20

Automatic
Transmission
2nd Gear
Position
Indicator

Input

This pin is
used to
determine if
the automatic
transmission
shifter is in the
2nd position.
This signal is
also sent via
the Multiplex
network to the
dash for
display.

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'2' position.

B2

21

Automatic
Transmission
1st Gear
Position
Indicator

Input

This pin is
used to
determine if
the automatic
transmission
shifter is in the
L position.
This signal is
also sent via
the Multiplex

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'L' position.

This pin is connected to

sensor Ground inside the
engine ECU. Do not
connect this pin to chassis
Ground.

network to the
dash for
display.

B2

22

THA

Air
Temperature
Sensor

Input

This pin is
used to
measure the
temperature of
the engine
inlet manifold
air.

The engine air

temperature has an
effect on the engines
operation, such as
reducing ignition
timing if the intake
air is very hot.

This pin connects to a

thermistor that is installed
at the middle, engine side
of the engine intake
manifold to the radiator on
the front, upper, exhaust
side of the engine to
measure engine air intake
temperature. One side of
the thermistor should be
wired to this pin and one
side of the thermistor
should be wired to the
engine ECU pin E2
(Ground).

B2

23

VTA

Throttle
Position
Sensor
(Actual
Throttle
Position
Sensor)

Input

This pin is
used to detect
the actual
position of the
throttle.

The actual throttle

position allows the
engine ECU to set
the throttle to a
know position based
on the desired
throttle position and
the engine ECUs
desired
programming.

This pin measures the

variable voltage from one of
the outputs from the
position sensor that
measures the actual throttle
position. The position
sensor has two outputs (VTA
and VTA2) with different
responses that allow the
engine ECU to perform
diagnostics during normal
operation.

B2

24

VTA2 Throttle
Position
Sensor
(Actual
Throttle
Position
Sensor)

Input

This pin is
used to detect
the actual
position of the
throttle.

The actual throttle

position allows the
engine ECU to set
the throttle to a
know position based
on the desired
throttle position and
the engine ECUs
desired
programming.

This pin measures the

variable voltage from one of
the outputs from the
position sensor that
measures the actual throttle
position. The position
sensor has two outputs (VTA
and VTA2) with different
responses that allow the
engine ECU to perform
diagnostics during normal
operation.

Plu
g

Pi
n

Sym Definition
bol

Input What
/
Outp
ut

Why

How

B3

S1

Automatic
Transmission
No.1 Shift
Solenoid

Outpu This pin is

t
used to control
the automatic
transmission
No.1 shift
solenoid.

The automatic
transmission gear
selection is
controlled by
electronic solenoids.

This pin outputs battery

voltage to turn the No.1
shift solenoid ON as
required. The No.1 shift
solenoid is ON in gears 1 &
2. The other side of the
No.1 shift solenoid is
Grounded inside the
automatic transmission.

B3

S2

Automatic
Transmission
No.2 Shift
Solenoid

Outpu This pin is

t
used to control
the automatic
transmission
No.2 shift
solenoid.

The automatic
transmission gear
selection is
controlled by
electronic solenoids.

This pin outputs battery

voltage to turn the No.2
shift solenoid ON as
required . The No.2 shift
solenoid is ON in gears 2 &
3. The other side of the
No.2 shift solenoid is
Grounded inside the
automatic transmission.

B3

SD

Automatic
Outpu ?
Transmission t
Shift Solenoid

B3

NCO
+

Automatic
Input
Transmission
Over Drive
Direct Clutch
Speed Sensor

This pin is
used to detect
the speed of
the automatic
transmission
O/D input
shaft.

Detection of the
automatic
transmission OD
input shaft speed
can be used to
improve shift timing
and ensure smooth
gear shifts.

This pin connects to the OD

speed sensor located on the
left, front side of the
automatic transmission and
outputs a number of pulses
(reluctor pulses) per
revolution of the OD direct
clutch drum.

B3

SP2
+

Speed Sensor Input

This pin is
used to
determine
vehicle speed.

Vehicle speed is used

in idle control,
automatic
transmission shift
control, cruise
control, speed
limiting etc. Note:
The speed signal for
the dash is NOT
received via the
Multiplex / this
signal. The dash
speed signal comes
from the ABS ECU
(SP1).

This pin connects to the

speed sensor located on the
left, rear side of the
automatic transmission and
outputs 12 pulses (reluctor
pulses) per revolution of the
automatic transmission
output shaft.

Lin
k

B3

S4

Automatic
Outpu ?
Transmission t
Shift Solenoid

B3

SLU
+

Automatic
Transmission
Lock Up
Solenoid

Outpu This pin is

t
used to control
the automatic
transmission
lock up torque
converter
control
solenoid which
is used to
enable torque
converter lock
up.

The automatic
transmission lock up
torque converter is
controlled by an
electronic solenoid.

This pin in association with

the SLU- pin outputs battery
voltage to turn the lock up
torque converter solenoid
ON.

B3

SLN
+

Automatic
Transmission
Accumulator
Back
Pressure
Solenoid

Outpu This pin is

t
used to control
the automatic
transmission
accumulator
back pressure
control
solenoid.

The automatic
transmission
accumulator back
pressure is controlled
by an electronic
solenoid.

This pin in association with

the SLN- pin outputs Pulse
Width Modulated (PWM)
battery voltage to turn the
accumulator back pressure
control solenoid ON.

B3

SLT+ Automatic
Outpu This pin is
Transmission t
used to control
Line Pressure
the automatic
Control
transmission
Solenoid
line pressure
control
solenoid.

The automatic
transmission line
pressure is controlled
by an electronic
solenoid.

This pin in association with

the SLT- pin outputs Pulse
Width Modulated (PWM)
battery voltage to turn the
line pressure control
solenoid ON.

B3

10

NCO- Automatic
Input
Transmission
Over Drive
Direct Clutch
Speed Sensor

This pin is
used to detect
the speed of
the automatic
transmission
O/D input
shaft.

Detection of the
automatic
transmission OD
input shaft speed
can be used to
improve shift timing
and ensure smooth
gear shifts.

This pin connects to the OD

speed sensor located on the
left, front side of the
automatic transmission and
outputs a number of pulses
(reluctor pulses) per
revolution of the OD direct
clutch drum.

B3

11

SP2-

This pin is
used to
determine
vehicle speed.

Vehicle speed is used

in idle control,
automatic
transmission shift
control, cruise
control, speed
limiting etc. Note:
The speed signal for
the dash is NOT
received via the
Multiplex / this
signal. The dash
speed signal comes
from the ABS ECU

This pin connects to the

speed sensor located on the
left, rear side of the
automatic transmission and
outputs 12 pulses (reluctor
pulses) per revolution of the
automatic transmission
output shaft.

Speed Sensor Input

(SP1).

B3

12

VSV3 Exhaust
Outpu This pin is
Bypass Valve t
used to control
Vacuum
the VSV which
Switching
is used to
Valve
open / close
the Exhaust
Bypass Valve
that is a
component of
the sequential
turbo system.

The Exhaust Bypass

Valve allows exhaust
gas to pre-spool the
rear turbocharger
prior to it coming
online as part of the
sequential turbo
system.

This pin is connected to

Ground inside the ECU as
required to turn the Exhaust
Bypass Valve VSV ON
allowing pressurised intake
air to open the Exhaust
Bypass Valve. One side of
the VSV should be wired to
this pin and one side of VSV
should be wired to battery
voltage (Main EFI Relay
switched).

B3

13

SLU-

Automatic
Transmission
Lock Up
Solenoid

Outpu This pin is

t
used to control
the automatic
transmission
lock up torque
converter
control
solenoid which
is used to
enable torque
converter lock
up.

The automatic
transmission lock up
torque converter is
controlled by an
electronic solenoid.

This pin in association with

the SLU+ pin outputs
battery voltage to turn the
lock up torque converter
solenoid ON.

B3

14

SLN-

Automatic
Transmission
Accumulator
Back
Pressure
Solenoid

Outpu This pin is

t
used to control
the automatic
transmission
accumulator
back pressure
control
solenoid.

The automatic
transmission
accumulator back
pressure is controlled
by an electronic
solenoid.

This pin in association with

the SLN+ pin outputs Pulse
Width Modulated (PWM)
battery voltage to turn the
accumulator back pressure
control solenoid ON.

B3

15

SLT-

Automatic
Outpu This pin is
Transmission t
used to control
Line Pressure
the automatic
Control
transmission
Solenoid
line pressure
control
solenoid.

The automatic
transmission line
pressure is controlled
by an electronic
solenoid.

This pin in association with

the SLT+ pin outputs Pulse
Width Modulated (PWM)
battery voltage to turn the
line pressure control
solenoid ON.

B3

16

FPU

Fuel Pressure Outpu This pin is

Up Vacuum
t
used to control
Switching
the VSV which
Valve
is used to
increase fuel
pressure
during hot
soak starting.

To reduce the
possibility of fuel
vapour formation in
the fuel rail during
starting from hot
soak conditions the
Fuel Pressure Up VSV
is used to increase
the fuel rail pressure
for a short period of

This pin is connected to

Ground inside the ECU as
required to turn the Fuel
Pressure Up VSV ON which
vents the fuel pressure
regulator reference to
atmosphere resulting in
increased fuel rail pressure.
One side of the VSV should
be wired to this pin and one

Automatic
Transmission
Oil
Temperature
Sensor

Input

This pin is
used to
measure the
automatic
transmission
oil
temperature.

time after hot soak

starting.

side of VSV should be wired

to battery voltage (Main EFI
Relay switched).

The automatic
transmission oil
temperature has a
significant effect on
the automatic
transmissions
operation, the
engine ECU can
compensate if the
automatic
transmission oil
temperature is
measured.

This pin connects to a

thermistor that is installed
inside the automatic
transmission to measure
the automatic transmission
oil temperature. One side
of the thermistor should be
wired to this pin and one
side of the thermistor
should be wired to the
engine ECU pin E2
(Ground).

B3

17

OIL

Plu
g

Pi
n

Sym Definition
bol

Input What
/
Outp
ut

Why

How

F59 1

F59 2

STA

Starter Signal Input

This pin is
used to
determine if
the engine is
being cranked.

The engine ECU can

take action to allow
the engine to start
easier if it is aware
that the engine is
trying to be started.

This pin is connected to

battery voltage when
the ignition switch is in
CRANK position.

F59 3

FCUT Fuel Cut

Outpu This pin is

t?
used to
monitor the
FPC fuel pump

It is believed that
this pin is used as a
safety check to
confirm that the FPC

This pin is connected to the

FPC pin. Note: 2000-07
onwards models only,
earlier models do not have

Lin
k

control signal? signal and the

this pin wired.
engine ECU is
functioning
correctly. It is
believed that if
abnormal pulses or
voltage are detected
on this pin that fuel
pump and engine
operation will be
stopped?
F59 4

SFTU Automatic
Transmission
Shift Up

Input

This pin is
Driver control of the
used to detect automatic
the drivers
transmission.
request to shift
the automatic
transmission
up a gear from
the steering
wheel controls,
when the
automatic
transmission
shifter is in the
'M' position.

This pin is connected to

ground when the switch to
shift the automatic
transmission up a gear is
activated, the ECU pin is
open circuit when the
switch is not activated.

F59 5

TC

Test
Connector

Input

This pin is
used to select
the test mode
during which
diagnostic
codes are
flashed on the
check engine
light.

Used to help in
diagnosing issues.

This pin is connected to

Ground to enable test
mode.

F59 6

STP

Stop Light
Switch

Input

This pin is
used to detect
when the
brake pedal is
depressed.

Used to disable the

automatic
transmission lock up
torque converter,
exit deceleration fuel
cut, cruise control
etc.

This pin is connected to

battery voltage when the
brake pedal is depressed,
the ECU pin is open circuit
when the brake pedal is not
depressed.

F59 7

Automatic
Input
Transmission
M (Manual)
Gear Position
Indicator

This pin is
used to
determine if
the automatic
transmission
shifter is in the
'M' (Manual)
position. In the
Manual
position the
automatic
transmission

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'M' position.

gear position
is controlled
by the engine
ECU pins SFTU
and SFTD. This
signal is also
sent via the
Multiplex
network to the
dash for
display.
F59 8

F59 9

F59 10

TAM

Ambient Air
Temperature
Sensor

Input

This pin is
used to
measure the
temperature of
the ambient
air.

It is suspected that
this sensor measures
the temperature of
the ambient air for
the climate control,
etc systems with the
data being sent via
the Multiplex
network to the dash.
It is unknown if this
sensor plays any part
in the engine control
algorithms.

This pin connects to a

thermistor that is installed
at the far front of the car.
One side of the thermistor
should be wired to this pin
and one side of the
thermistor should be wired
to the engine ECU pin E2
(Ground).

F59 11

ST1-

Brake Signal
Switch

Input

This pin is
used to detect
when the
brake pedal is
depressed.

It is suspected that
this pin is primarily
responsible for
exiting cruise
control. As the
engine ECU is used
for cruise control a
failsafe detection
method of brake
pedal state via a
dual contact brake
switch is used. It is
unknown if this
switch plays any
other part in the
engine control
algorithms.

This pin is disconnected

from battery voltage when
brake pedal is depressed,
the ECU pin is connected to
battery voltage when the
brake pedal is not
depressed.

F59 12

PRE2 Airconditionin Input

g Pressure
Switch 2

This pin is
used to detect
when the
airconditioning
system
pressure is too
high?/too
low?/other?

As final control of the

airconditioning
compressor is
determined by the
engine ECU it is
logical to have the
system healthy
switches
(airconditioning

This pin is connected to

ground when the switch is
activated, the ECU pin is
open circuit when the
switch is not activated. It is
suspected that when this
switch is activated the
airconditioning compressor
will not be able to be

compressor speed,
engaged.
system pressures,
etc) go to the engine
ECU to ensure that
the airconditioning
system is controlled
correctly.

F59 13

ACM
G

Airconditionin Outpu This pin is

g Magnetic
t
used to turn
Clutch Relay
the
Trigger
airconditioning
magnetic
clutch relay
ON.

ECU control of the

airconditiong enables
the airconditioning to
be turned off during
hard acceleration,
etc.

This pin is Grounded by the

ECU as required to turn the
airconditioning magnetic
clutch relay ON. One side
of the airconditioning
magnetic clutch relay coil
should be wired to this pin
and one side of the
airconditioning magnetic
clutch relay coil should be
connected to battery
voltage (Ignition switched)
and one side of the relay
coil connected to this ECU
pin.

F59 14

SFTD Automatic
Transmission
Shift Down

Input

This pin is
Driver control of the
used to detect automatic
the drivers
transmission.
request to shift
the automatic
transmission
down a gear
from the
steering wheel
controls, when
the automatic
transmission
shifter is in the
'M' position.

This pin is connected to

ground when the switch to
shift the automatic
transmission down a gear is
activated, the ECU pin is
open circuit when the
switch is not activated.

F59 15

F59 16

Automatic
Input
Transmission
Reverse Gear
Position
Indicator

This pin is
used to
determine if
the automatic
transmission
shifter is in the
reverse
position. This
signal is also
sent via the
Multiplex
network to the
dash for
display.

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'R' position.

F59 17

Automatic
Transmission
Drive Gear
Position
Indicator

Input

This pin is
used to
determine if
the automatic
transmission
shifter is in the
drive position.
This signal is
also sent via
the Multiplex
network to the
dash for
display.

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'D' position.

F59 18

TH+

Engine
Coolant
Temperature
Sensor

Input

This pin is
used to
measure the
temperature of
the engine
coolant in the
lower tank of
the radiator.

The temperature of
the engine coolant in
the lower tank of the
engine radiator is
used to control the
speed of the engine
cooling fan. As the
temperature of the
coolant increases the
speed of the engine
cooling fan
increases.

This pin connects to a

thermistor that is installed
in the lower tank of the
engine radiator. One side of
the thermistor should be
wired to this pin and one
side of the thermistor
should be wired to the
engine ECU pin TH-.

F59 19

F59 20

TACH Tachometer

Engine RPM is
displayed on the
dash and also
available at the
diagnostic connector
mounted on the side
of the engine.

This pin outputs a 0V to

battery voltage Pulse Width
Modulated (PWM) signal
related to engine RPM.

F59 21

PRE

Airconditionin Input
g Pressure
Switch

This pin is
used to detect
when the
airconditioning
system
pressure is too
high or too
low.

As final control of the

airconditioning
compressor is
determined by the
engine ECU it is
logical to have the
system healthy
switches
(airconditioning
compressor speed,
system pressures,
etc) go to the engine
ECU to ensure that
the airconditioning
system is controlled
correctly.

This pin is connected to

ground when the system
pressure is healthy, the ECU
pin is open circuit when the
system pressure is not
healthy. It is suspected that
when the system pressure
is not healthy the
airconditioning compressor
will not be able to be
engaged.

F59 22

TH-

Engine
Coolant
Temperature

This pin is
used to
measure the

The temperature of
This pin connects to a
the engine coolant in thermistor that is installed
the lower tank of the in the lower tank of the

Outpu This pin is

t
used to output
a PWM signal
that correlates
to engine RPM.

Input

Sensor

temperature of
the engine
coolant in the
lower tank of
the radiator.

engine radiator is
used to control the
speed of the engine
cooling fan. As the
temperature of the
coolant increases the
speed of the engine
cooling fan
increases.

engine radiator. One side of

the thermistor should be
wired to this pin and one
side of the thermistor
should be wired to the
engine ECU pin TH+.

F59 23

CCS

Cruise
Control
Switch

Input

This pin is
used to detect
the pressing of
the cruise
control
switches (SET,
RES, ON-OFF,
CANCEL)

The cruise control

operation is built into
the engine ECU and
makes use of the
electronically
controlled throttle
body to achieve this
function.

This pin is connected to

battery voltage inside the
engine ECU via a pull up
resistor. The various cruise
control switches are
connected to ground via
specific pull down resistors
when the switches are
activated to form a voltage
divider. The resultant
voltage generated by the
voltage dividers is detected
by the engine ECU to set
the cruise control as
required.

F59 24

F59 25

REC

Fan Control

Outpu This pin is

t
used to control
the speed of
the engine
cooling fan.

The speed of the

engine cooling fan is
determined by the
temperature of the
engine coolant in the
lower tank of the
radiator.

This pin is used together

with the REC2 pin to control
the speed of the engine
cooling fan via the Fan
Controller. The REC and
REC2 pins are triggered by
the engine ECU in a PWM
fashion.

F59 26

Automatic
Transmission
Park Gear
Position
Indicator

Input

The engine ECU

needs to
energise/de-energise
the automatic
transmission
solenoids to select
the correct gear.

This pin is connected to

battery voltage by the
automatic shifter position
switch when the automatic
transmission shifter is in the
'P' position.

This pin is
used to
determine if
the automatic
transmission
shifter is in the
park position.
This signal is
also sent via
the Multiplex
network to the
dash for
display.

F59 27

MPX
2

Multiplex
Outpu This pin is
Communicati t
used to
ons to
transmit data
Airconditionin
between
g ECU
different
vehicle
modules.

Much of the data

that is collected by
the engine ECU and
other modules can
and is used in other
modules throughout
the vehicle. E.g. the
engine ECU sends
the water
temperature signal
to the dash, the
automatic
transmission shifter
position signals, etc
via the Multiplex
network.

The Multiplex network

transmits data via serial.

F59 28

MPX
1

Multiplex
Input
Communicati
ons to
Multiplex
Network
Body
Computer
No.1

Much of the data

that is collected by
the engine ECU and
other modules can
and is used in other
modules throughout
the vehicle. E.g. the
engine ECU sends
the water
temperature signal
to the dash, the
automatic
transmission shifter
position signals, etc
via the Multiplex
network.

The Multiplex network

transmits data via serial.

Plu
g

Sym Definition
bol

Input What
/
Outp
ut

Why

How

F60 1

BATT Battery
Power

Input

This pin is
used to supply
constant
battery power
to the ECU.

Constant battery
power allows the
engine ECU to retain
error codes, fuel
trims, etc.

This pin is connected to

battery voltage at all
times via the 25A EFI
fuse.

F60 2

F60 3

F60 4

DI

Diagnostic
Indication
(Fuel Pump
Control)

Input

This pin is
used to
determine if
the Fuel Pump
ECU is healthy.

This pin lets the

engine ECU know if
the Fuel Pump ECU is
healthy, if the Fuel
Pump ECU is not
healthy the engine
ECU stops the output

This pin is connected to

battery voltage when the
Fuel Pump ECU is healthy,
the pin is open circuit when
Fuel Pump ECU is not
healthy.

Pi
n

This pin is
used to
transmit data
between
different
vehicle
modules.

Lin
k

on the FPC pin.

F60 5

FPC

Fuel Pump
Control

F60 6

Engine
Outpu This pin is
Warning Light t
used to turn
(Check
ON / OFF the
Engine Light)
check engine
light.

F60 7

+BM ETCS-i Power

Input

This pin is
used to supply
constant
battery power
to the ECU for
the electronic
throttle control
system.

F60 8

+B2

Input

This pin is
Used to supply
used to supply power.
switched
battery power
to the ECU.

This pin is connected to

battery voltage when
the Main EFI Relay is
energised to supply
power to the ECU. The
Main EFI Relay is
triggered by the engine
ECU pin M-REL pin.

F60 9

IGSW Ignition
Switch

Input

This pin is
used to
determine if
the ignition is
ON.

The engine ECU is

turned on by this
signal.

This pin is connected to

battery voltage when
the ignition switch is in
RUN and CRANK
positions.

F60 10

MREL

Outpu This pin is

t
used to turn
ON the Main
EFI Relay
which feeds
power to the
fuel pump,
engine ECU,
engine VSVs
and O2 sensor

ECU control of the

main power relay
allows the ECU to
remain powered up
after engine
shutdown.

This pin is connected to

battery voltage inside
the ECU as required to
turn the Main EFI Relay
ON when the ignition
switch is ON. Note that
this pin continues to
output voltage for a few
second after the ignition
has been switched off to

EFI Main
Relay
Switched
Power

EFI Main
Relay Trigger

Outpu This pin is

t
used to signal
the desired
fuel pump
speed to the
Fuel Pump
ECU.

The fuel pump speed

can be reduced at
low load conditions
to make the fuel
quieter and improve
fuel pump longevity.

This pin outputs a 0V to 5V

Pulse Width Modulated
(PWM) signal which is
connected to the Fuel Pump
ECU to control fuel pump
speed.

The check engine

light comes on to
inform of a detected
engine issue.

This pin is Grounded by the

ECU as required to turn the
Check Engine Light ON.
The check engine light
should be wired with one
side of the light connected
to battery voltage (Ignition
Switched) and one side of
the light connected to this
ECU pin. Light ON = Error
Condition, light OFF =
Normal.

Used to supply
power for the
electronic throttle
control system.

This pin is connected to

battery voltage at all
times via the 15A ETCS
fuse.

heater circuits,
etc.

allow the ISCV to be fully

opened by the ECU for
the next engine start.
One side of the Main EFI
Relay coil should be
connected to this pin
and one side of the Main
EFI Relay coil should be
connected to Ground.

F60 11

SIL

OBDII

Outpu This pin is

t
used to
provide OBDII
diagnostic
information.

Many engine
The ISO 9141-2 K-Line
parameters can be
standard is used to provide
monitored via the
OBDII information via serial.
OBDII interface,
which maybe
particularly helpful in
diagnosing issues
that maybe present
in the engine control
system.

F60 12

F60 13

TRC
+

ABS & TRC &

VSC ECU
Serial Data

Input

It is believed
that this pin is
used to
communicate
data via serial
from the ABS,
TRC and VSC
ECU to the
engine ECU.

It is believed that the Differential serial data is

ABS, TRC and VSC
transmitted via the TRC+
control systems can and TRC- pins.
act to modify the
engine control as
required by
requesting the
engine ECU to
reduce engine torque
etc via closing the
throttle, modifying
engine ignition or
fuelling. It is
believed that this
data connections
allows this control to
take place.

F60 14

ENG
+

ABS & TRC &

VSC ECU
Serial Data

Outpu It is believed
t
that this pin is
used to
communicate
data via serial
from the
engine ECU to
the ABS, TRC
and VSC ECU.

It is believed that the Differential serial data is

ABS, TRC and VSC
transmitted via the ENG+
control systems can and ENG- pins.
act to modify the
engine control as
required by
requesting the
engine ECU to
reduce engine torque
etc via closing the
throttle, modifying
engine ignition or
fuelling. It is
believed that this
data connections
allows this control to

take place.

F60 15

NEO

Slave Engine Outpu This pin is

Speed Sensor t
used to supply
a copy of the
engine speed
(NE) signal to
the ABS, TRC
and VSC ECU.

F60 16

+B

Switched
Battery
Power

Input

This pin is
Used to supply
used to supply power.
switched
battery power
to the ECU.

This pin is connected to

battery voltage when
the Main EFI Relay is
energized to supply
power to the ECU. The
Main EFI Relay is
triggered by the engine
ECU pin M-REL pin.

F60 17

F60 18

REC2 Fan Control

Outpu This pin is

t
used to control
the speed of
the engine
cooling fan.

The speed of the

engine cooling fan is
determined by the
temperature of the
engine coolant in the
lower tank of the
radiator.

This pin is used together

with the REC2 pin to control
the speed of the engine
cooling fan via the Fan
Controller. The REC and
REC2 pins are triggered by
the engine ECU in a PWM
fashion.

F60 19

F60 20

TRC- ABS & TRC &

VSC ECU
Serial Data

Outpu It is believed
t
that this pin is
used to
communicate
data via serial
from the ABS,
TRC and VSC
ECU to the
engine ECU.

Engine speed is a
useful parameter for
ABS, TRC and VSC
control.

This pin connects to the

ABS, TRC and VSC ECU pin
NEO.

It is believed that the Differential serial data is

ABS, TRC and VSC
transmitted via the TRC+
control systems can and TRC- pins.
act to modify the
engine control as
required by
requesting the
engine ECU to
reduce engine torque
etc via closing the
throttle, modifying
engine ignition or
fuelling. It is
believed that this
data connections
allows this control to

take place.

F60 21

ENG- ABS & TRC &

VSC ECU
Serial Data

Input

It is believed
that this pin is
used to
communicate
data via serial
from the
engine ECU to
the ABS, TRC
and VSC ECU.

It is believed that the Differential serial data is

ABS, TRC and VSC
transmitted via the ENG+
control systems can and ENG- pins.
act to modify the
engine control as
required by
requesting the
engine ECU to
reduce engine torque
etc via closing the
throttle, modifying
engine ignition or
fuelling. It is
believed that this
data connections
allows this control to
take place.

F60 22

EC

Input

Ground.

Used to supply a
This pin connects to Ground
Ground path to allow or the battery negative.
current to flow. It is
believed that a
separate ground is
used for the PRE and
PRE2 switch inputs
due to the location of
the PRE and PRE2
switches.

Plu
g

Sym Definition
bol

Input What
/
Outp
ut

Why

How

F84 1

F84 2

F84 3

F84 4

F84 5

F84 6

F84 7

F84 8

F84 9

EOM

GND

Input

Ground.

Used to supply a
This pin connects to Ground
Ground path to allow or the battery negative.
current to flow.

F84 10

KSW

Key Inserted

Input

This pin is
As part of the engine This pin is connected to
used to detect immobilization
ground when the key is
if the vehicle
system insertion of
inserted into the ignition

Pi
n

PRE and
PRE2
Switches
Ground

Lin
k

key has been

inserted into
the ignition
barrel.

the key can be used

to trigger the
process to verify the
key matches
correctly.

barrel. The ECU pin is open

circuit when the key s not
inserted into the ignition
barrel.

F84 11

F84 12

F84 13

F84 14

F84 15

F84 16

F84 17

F84 18

F84 19

F84 20

IMLD Immobilizer
LED

The immobilizer LED

is used to indicate
the status of the
vehicle
immobilization
system.

This pin is connected to

battery voltage to turn the
immobilizer LED ON.

F84 21

TXCT Key Amplifier Outpu This pin

t
connects to
the key
amplifier. The
exact function
is unknown.

Part of the vehicle

immobilization
system.

The exact function of this

pin is unknown.

F84 22

RXCK Key Amplifier Input

This pin
connects to
the key
amplifier. The
exact function
is unknown.

Part of the vehicle

immobilization
system.

The exact function of this

pin is unknown.

F84 23

COD
E

Key Amplifier Input

This pin
connects to
the key
amplifier. The
exact function
is unknown.

Part of the vehicle

immobilization
system.

The exact function of this

pin is unknown.

F84 24

F84 25

F84 26

Outpu This pin is

t
used to
illuminate the
immobilizer
LED.

JZS161 Toyota Aristo 2JZ-GTE VVTi Engine Loom to

Body Loom Pinout
JZS161 Toyota Aristo 2JZ-GTE VVTi 90980-11531 Engine Loom
to Body Loom Plug (White)
This plug is located at the front, passenger side of the engine bay and mates with male
connector 90980-11530.

Plug

Pin Sym
bol

Definition

Input / Output Description

(To engine =
Input)
(From engine =
Output)

BF1

BF1

Engine ECU: Ambient

E2
Temperature
Sensor
Ground

Output

The body loom side of this pin connects to

the ambient temperature sensor
thermistor mounted at the far front of the
car.
The engine loom side of this pin connects
to the engine ECU pin E2 to provide a
ground for the ambient temperature
sensor.

Lin
k

BF1

Engine
Mounted
Diagnostic
Connector:
AB

SRS Airbag
Power

Input

The body loom side of this pin connects to

the SRS airbag control ECU AB pin.
The engine loom side of this pin connects
to the diagnostic connector mounted on
the side of the engine.
Note: Pre 2000-07 models only, later
models do not have this pin wired.

BF1

BF1

Engine
Mounted
Diagnostic
Connector:
TS

Test Enable

Input

The body loom side of this pin connects to

a number of control module TS input pins.
The engine loom side of this pin connects
to the diagnostic connector mounted on
the side of the engine.

4WS ECU:
TS
BF1

BF1

Engine ECU: Reverse Gear

R
Automatic
Transmission
Position
Switch
Indicator

Output

The body loom side of this pin needs to be

connected to the engine ECU R input pin
and the reverse lights.
The engine loom side of this pin connects
to automatic transmission shifter position
switch mounted on the automatic
transmission and outputs battery voltage
when the automatic transmission shifter is
in the R position.

Alternator
Input
Battery
Voltage Sense

The body loom side of this pin needs to be

connected to the battery via a 5A fuse.
The engine loom side of this pin connects
to the alternator S pin.

BF1

Proportional
Power
Steering
ECU: SOL+

Proportional
Power
Steering
Solenoid

Input

The body loom side of this pin connects to

the proportional power steering ECU
SOL+ pin.
The engine loom side of this pin connects
to the proportional power steering
solenoid located on the power steering
pump.

BF1

Proportional
Power
Steering
ECU: SOL-

Proportional
Power
Steering
Solenoid

Input

The body loom side of this pin connects to

the proportional power steering ECU SOLpin.
The engine loom side of this pin connects
to the proportional power steering
solenoid located on the power steering
pump.

BF1

10

Engine
Mounted
Diagnostic

ABS

Input

The body loom side of this pin connects to

the ABS control ECU WA pin and also the
ABS light mounted in the dash.

Connector:
WA

The engine loom side of this pin connects

to the diagnostic connector mounted on
the side of the engine. Note that there is
a shorting link inserted between terminals
WA and WB of the diagnostic connector.

ABS & VSC

ECU: WA
BF1

11

Engine
Mounted
Diagnostic
Connector:
WB

ABS

Output

The engine loom side of this pin connects

to the diagnostic connector mounted on
the side of the engine. Note that there is
a shorting link inserted between terminals
WA and WB of the diagnostic connector
from factory.

ABS & VSC

ECU: WB
BF1

12

Engine
Mounted
Diagnostic
Connector:
TC
Engine ECU:
TC
ABS & VSC
ECU: TC
4WS ECU:
TC

The body loom side of this pin connects to

the ABS relay.

Test
Connector

Input

The body loom side of this pin connects to

the TC pin on a number of control
modules.
The engine loom side of this pin connects
to the diagnostic connector mounted on
the side of the engine.
Note: Pre 2000-07 models only, later
models do not have this pin wired.

JZS161 Toyota Aristo 2JZ-GTE VVTi 90980-11527 Engine Loom

to Body Loom Plug (White)
This plug is located at the front, passenger side of the engine bay and mates with male
connector 90980-11596.

Plu
g

Pi
n

BF2 1

Symbol

Definition

Engine ECU: Air Conditioning

ACMG
Magnetic Clutch
Relay Trigger Signal

Input / Output
(To engine =
Input)
(From engine
= Output)

Description

Output

The body loom side of this pin needs to

be connected to the AC magnetic
clutch relay coil negative.
The engine loom side of this pin
connects to the engine ECU ACMG pin.

BF2 2

Engine ECU: Park Gear Automatic Output

P
Transmission Position
Switch Indicator

The body loom side of this pin needs to

be connected to the engine ECU P
input pin.
The engine loom side of this pin
connects to automatic transmission
shifter position switch mounted on the
automatic transmission and outputs
battery voltage when the automatic

Lin
k

transmission shifter is in the P position.

BF2 3

BF2 4

BF2 5

Power to Coils and

Igniter

Input

The body loom side of this pin

needs to be connected to battery
voltage via the ignition switch
when the ignition is in the RUN
and CRANK positions to switch
battery voltage to the coils and
igniter.

BF2 6

The engine loom side of this pin

connects to the coil and igniter power
supply pins.
BF2 7

Power to Fuel
Injectors

Input

The body loom side of this pin

needs to be connected to battery
voltage via the ignition switch
when the ignition is in the RUN
and CRANK positions to switch
battery voltage to the fuel
injectors.
The engine loom side of this pin
connects to the fuel injector power
supply pins.

BF2 8

Starter Motor Relay

Switched Power

Input

The body loom side of this pin

needs to be connected to the
starter motor relay switched
power output which switches
battery voltage to the starter
motor to turn it on.
The engine loom side of this pin
connects to the starter motor. The
starter motor is grounded via the
engine block.
Refer to pins BF3-4 and BF3-5 for
further information regarding the
starter / starter relay circuit.

BF2 9

Engine ECU: Main EFI Relay

+B, +B2
Switched Power

Input

The body loom side of this pin

needs to be connected to main EFI
relay switched power output which
switches battery voltage to the
engine ECU, VSVs, etc. The main
EFI relay is switched via the
engine ECU M-REL output pin.
The engine loom side of this pin

connects to the engine ECU, VSVs, etc

power supply pins.
BF2 10 /

JZS161 Toyota Aristo 2JZ-GTE VVTi 90980-11710 Engine Loom

to Body Loom Plug (White)
This plug is located at the front, passenger side of the engine bay and mates with male
connector 90980-11709.

Plu
g

Pi
n

Symbol

Definition

Input / Output Description

(To engine =
Input)
(From engine
= Output)

BF3 1

BF3 2

Engine ECU: TACH Tachometer

Output from
Engine Mounted
Igniter
Diagnostic
Connector: IG-

Output

The body loom side of this pin needs to be

connected to the dash tachometer and
other vehicle systems.

Engine ECU: D

Output

BF3 3

Drive Gear
Automatic
Transmission
Position Switch
Indicator

The engine loom side of this pin connects

to the engine ECU TACH pin which outputs
a 0V to battery voltage signal that is
related to engine RPM.
The body loom side of this pin needs to be
connected to the engine ECU D input pin.
The engine loom side of this pin connects
to automatic transmission shifter position
switch mounted on the automatic
transmission and outputs battery voltage
when the automatic transmission shifter is
in the D position.

Lin
k

BF3 4

Engine ECU: STA

Starter Motor
Relay Trigger
Signal

Output

The body loom side of this pin needs

to be connected to the starter motor
relay coil to turn it on when the
ignition switch is in CRANK position
and the automatic transmission park /
neutral switch is closed - that is the
automatic transmission selector is in
the park / neutral position.
The engine loom side of this pin is
connected to the automatic transmission
park / neutral position switch and also the
engine ECU STA pin.
Refer to pin BF3-5 for further information.

BF3 5

Starter Signal

Input

The body loom side of this pin needs

to be connected to battery voltage
when the ignition switch is in CRANK
position.
The engine loom side of this pin connects
to one side of the automatic transmission
park / neutral switch to provide power to
the automatic transmission shifter position
switch.
Refer to pin BF3-4 for further information.

BF3 6

BF3 7

Engine ECU: E1

Ground

Output

The body loom side of this pin connects to

the ground for the cruise control switch
assembly.
The engine loom side of this pin connects
to the engine ECU E1 pin which is
Grounded at the intake manifold.

BF3 8
BF3 9

Ignition
Switched Power

Input

The body loom side of this pin needs

to be connected to ignition switched
power source that supplies battery
voltage when the ignition is in the
RUN and CRANK Positions.
The engine loom side of this pin connects
switched battery voltage to the alternator,
automatic transmission position switch and
the reverse lights.