Test item	Condition	Judgement	Check item (Remedy)
FUEL INJECTION	Engine: Return to the original trouble condition Change the amount of fuel injection using CONSULT.	If trouble symptom disappears, see Check item.	Harness and connectors Fuel injector Air fuel ratio (A/F) sensor 1
ENG COOLANT TEMP	Engine: Return to the original trouble condition Change the engine coolant temperature using CONSULT.	If trouble symptom disappears, see Check item.	Harness and connectors Engine coolant temperature sensor Fuel injector
PURG VOL CONT/V	Engine: After warming up, run engine at 1, 500 RPM. Change the EVAP canister purge volume control solenoid valve opening percent using CONSULT.	Engine speed changes according to the opening percent.	Harness and connectors Solenoid valve
FUEL/T TEMP SEN	Change the fuel tank temperature using CONSULT.
COOLING FAN^*	Ignition switch: ON Select LOW or HIGH on CONSULT screen.	Cooling fan operates at low speed or high speed.	Harness and connectors Cooling fan motor Cooling fan relay IPDM E/R
ALTERNATOR DUTY	Ignition switch: ON Change duty ratio using CONSULT.	Battery voltage changes.	Harness and connectors Alternator IPDM E/R
FUEL PUMP RELAY	Ignition switch: ON (Engine stopped) Turn the fuel pump relay "ON" and "OFF" using CONSULT and listen to operating sound.	Fuel pump relay makes the operating sound.	Harness and connectors Fuel pump relay
VIAS S/V-1	Ignition switch: ON (Engine stopped) Turn Intake Manifold Tuning (IMT) Valve "ON" and "OFF" using CONSULT and listen to operating sound.	IMT valve motor makes an operating sound.	Harness and connectors IMT valve motor
TUMBLE CONTROL VALVE	Ignition switch: ON Turn intake manifold runner control valve "ON" and "OFF" using CONSULT and listen to operating sound.	Intake Manifold Runner control valve motor makes an operating sound.	Harness and connectors Intake Manifold Runner control valve motor
IGNITION TIMING	Engine: Return to the original trouble condition Timing light: Set Retard the ignition timing using CONSULT.	If trouble symptom disappears, see Check item.	Perform Idle Air Volume Learning.
POWER BALANCE	Engine: After warming up, idle the engine. A/C switch OFF Selector lever: P or N (CVT models) Shifter lever: Neutral (M/T models) Cut off each fuel injector signal one at a time using CONSULT.	Engine runs rough or stops.	Harness and connectors Compression Fuel injector Power transistor Spark plug Ignition coil
VENT CONTROL/V	Ignition switch: ON (Engine stopped) Turn solenoid valve "ON" and "OFF" using CONSULT and listen to operating sound.	Solenoid valve makes an operating sound.	Harness and connectors Solenoid valve
INT V/T ASSIGN ANGLE	Engine: Return to the original trouble condition Change intake valve timing using CONSULT.	If trouble symptom disappears, see CHECK ITEM.	Harness and connectors Intake valve timing control solenoid valve
EXH V/T ASSIGN ANGLE	Engine: Return to the original trouble condition Change exhaust valve timing using CONSULT.	If trouble symptom disappears, see CHECK ITEM.	Harness and connectors Exhaust valve timing control solenoid valve

* : Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.

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

Test Item

Use the Manual With the Right Hardware

When to See a Mechanic

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