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Home >> Infiniti >> 2008 >> G35 Base >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 56 (Engine Control System - Introduction) >> Function Diagnosis >> On Board Diagnostic (OBD) System >> CONSULT-III Function (ENGINE) >> Active Test Mode >> Test Item
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Test Item

WARNING: This page is about a different car, the 2008 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
TEST ITEM CHART

TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJECTION
  • Engine: Return to the original trouble condition
  • Change the amount of fuel injection using CONSULT-III.
 If trouble symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Fuel injector
  • Air fuel ratio (A/F) sensor 1
IGNITION TIMING
  • Engine: Return to the original
  • trouble condition
  • Timing light: Set
  • Retard the ignition timing using CONSULT-III.
 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
  • Cut off each injector signal one at a time using CONSULT-III.
 Engine runs rough or dies.
  • Harness and connectors
  • Compression
  • Fuel injector
  • Power transistor
  • Spark plug
  • Ignition coil
COOLING FAN(1)
  • Ignition switch: ON
  • Turn the cooling fan HI and OFF using CONSULT-III.
 Cooling fan moves and stops.
  • Harness and connectors
  • Cooling fan motor
  • IPDM E/R
ENG COOLANT TEMP
  • Engine: Return to the original trouble condition
  • Change the engine coolant temperature using CONSULT-III.
 If trouble symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Engine coolant temperature sensor
  • Fuel injector
FUEL PUMP RELAY
  • Ignition switch: ON (Engine stopped)
  • Turn the fuel pump relay ON and OFF using CONSULT-III and listen to operating sound.
 Fuel pump relay makes the operating sound.
  • Harness and connectors
  • Fuel pump relay
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-III.
 Engine speed changes according to the opening percent.
  • Harness and connectors
  • Solenoid valve
FUEL/T TEMP SEN
  • Change the fuel tank temperature using CONSULT-III.
VENT CONTROL/V
  • Ignition switch: ON (Engine stopped)
  • Turn solenoid valve ON and OFF with the CONSULT-III and listen to operating sound.
 Solenoid valve makes an operating sound.
  • Harness and connectors
  • Solenoid valve
V/T ASSIGN ANGLE
  • Engine: Return to the original trouble condition
  • Change intake valve timing using CONSULT-III.
 If trouble symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Intake valve timing control solenoid valve
ALTERNATOR DUTY
  • Engine: Idle
  • Change duty ratio using CONSULT-III.
 Battery voltage changes.
  • Harness and connectors
  • IPDM E/R
  • Alternator
(1) Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.
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