On the << Main Menu>> display screen, select the {Each System Check} and press the [YES] key.
On the << System Selection Menu>> display screen, select the {Engine} and press the [YES] key.
Press the [YES] key after the information of engine type has been displayed.
On the << Engine Diagnosis>> display screen, select the {Current Data Display/Save}, and then press the [YES] key.
On the << Data Display Menu>> display screen, select the {Data & LED Display} and press the [YES] key.
Using the scroll key, scroll the display screen up or down until the desired data is shown.

A list of the support data is shown in LED OPERATION MODE FOR ENGINE CHART .

LED OPERATION MODE FOR ENGINE CHART

Remarks	Display	Message	When LED "ON" required
Test mode signal	Test mode terminal	D check/U check	D check
Neutral position switch signal	Neutral SW	Neutral/Other than neutral	Neutral
Idle switch signal	Soft idle SW	Idle/Other than idle	In idle
Ignition switch signal	Ignition SW	ON Input/OFF Input	ON input
Power steering switch signal	Power steering SW	ON Input/OFF Input	ON input
Air conditioning switch signal	A/C SW	ON Input/OFF Input	ON input
Starter switch signal	Starter SW	ON Input/OFF Input	ON input
Front oxygen monitor 1	FtO2 monitor 1	Lean/Rich	Rich
Front oxygen monitor 2	FtO2 monitor 2	Lean/Rich	Rich
Knocking signal	Knock signal	Yes/No	Yes
Crankshaft position sensor signal	Crankshaft angle signal	Yes/No	Yes
Camshaft position sensor signal	Camshaft angle signal	Yes/No	Yes
Rear defogger switch signal	Rear defogger SW	ON Input/OFF Input	ON input
Blower fan switch signal	Blower fan SW	ON Input/OFF Input	ON input
Light switch signal	Light SW	ON Input/OFF Input	ON input
Air conditioning lock signal	A/C lock signal	ON Input/OFF Input	ON input
A/C middle pressure switch signal	A/C middle pressure SW	ON Input/OFF Input	ON input
Air conditioner compressor relay signal	Compressor relay	ON output/OFF output	ON output
Pressure control solenoid valve signal	PCV Solenoid	ON/OFF	When pressure control valve is ON.
Drain valve signal	Vent Control Solenoid	ON/OFF	When drain valve is ON.
Fuel tank sensor control valve signal	Tank Sensor Cntl Valve	ON/OFF	When fuel tank sensor control valve is ON.
AT retard angle demand signal	AT retard angle demand	Yes/No	Yes
AT fuel cut signal	AT fuel cut	Yes/No	Yes
VDC torque down prohibition output	Torque down output	ON/OFF	Prohibition
VDC torque down demand	Torque down demand	Yes/No	Yes
AT coordinate permission signal	AT coordinate permission signal	ON/OFF	Permission
Electronic throttle control motor relay signal	ETC motor relay	ON/OFF	ON
Stop light switch signal	Stop SW	ON Input/OFF Input	ON input
SET/COAST switch signal	SET/CST SW	ON Input/OFF Input	ON input
RESUME/ACCEL switch signal	RES/ACC SW	ON Input/OFF Input	ON input
Brake switch signal	Brake SW	ON Input/OFF Input	ON input
Main switch signal	Main SW	ON Input/OFF Input	ON input
Body integrated unit data reception	Body Int. Unit Data	Yes/No	Yes
Body integrated unit counter update	Body Int. Unit Count	Yes/No	Yes
Cruise control cancel switch signal	CC Cancel SW	ON Input/OFF Input	ON input

NOTE: For detailed operation procedure, refer to the generic scan tool instruction cards, refer to the SUBARU SELECT MONITOR OPERATION MANUAL .

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Led Operation Mode For Engine

Use the Manual With the Right Hardware

When to See a Mechanic

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