Test Item

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

VENT CONTROL/V

Ignition switch: ON (Engine stopped)
Turn solenoid valve ON and OFF with the CONSULT and listen to operating sound.

Solenoid valve makes an operating sound.

Harness and connectors
Solenoid valve

ENG COOLANT TEMP

Engine: Return to the original non-standard condition
Change the engine coolant temperature using CONSULT.

If malfunctioning symptom disappears, see CHECK ITEM.

Harness and connectors
Engine coolant temperature sensor
Fuel injector

FUEL INJECTION

Engine: Return to the original non-standard condition
Change the amount of fuel injection using CONSULT.

If malfunctioning symptom disappears, see CHECK ITEM.

Harness and connectors
Fuel injector
Air fuel ratio (A/F) sensor 1

FUEL/T TEMP SEN

Change the fuel tank temperature using CONSULT.

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

FAN DUTY CONTROL⁽¹⁾

Ignition switch: ON
Change duty ratio using CONSULT.

Cooling fan speed changes.

Harness and connectors
Cooling fan motor
Cooling fan relay
Cooling fan control module
IPDM E/R

ALTERNATOR DUTY

Engine: Idle
Change duty ratio using CONSULT.

Battery voltage changes.

Harness and connectors
IPDM E/R
Alternator

POWER BALANCE

Engine: After warming up, idle the engine.
A/C switch OFF
Selector lever: P or N
Cut off each 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

IGNITION TIMING

Engine: Return to the original non-standard condition
Timing light: Set
Retard the ignition timing using CONSULT.

If malfunctioning symptom disappears, see CHECK ITEM.

Perform Idle Air Volume Learning.

V/T ASSIGN ANGLE

Engine: Return to the original non-standard condition
Change intake valve timing using CONSULT.

If malfunctioning symptom disappears, see CHECK ITEM.

Harness and connectors
Intake valve timing control solenoid valve

FPCM

Engine: Return to the original trouble condition
Select "LOW", "MID" and "HI" with CONSULT.

Fuel pump speed changes or stops.

Harness and connectors
Fuel pump control module (FPCM)

⁽¹⁾	Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.