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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Basic Inspection And System Description) >> System Description >> Diagnosis System (ECM) >> Consult Function >> Active Test Mode >> Test Item
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Test Item

TEST ITEM CONDITION JUDGEMENT 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 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
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
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
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
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.
FAN DUTY CONTROL *
  • Ignition Switch: ON
  • Change duty ratio using CONSULT.
 Cooling fan speed changes.
  • Harness and connectors
  • Cooling Fan Motor
  • Cooling Fan Relay-1
  • Cooling Fan Control Module-1
  • 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 (A/T), Neutral (M/T)
  • Cut off each injector signal one at a time using CONSULT.
 Engine runs rough or dies.
  • Harness and connectors
  • Compression
  • Fuel Injector
  • Power transistor
  • Spark plug
  • Ignition coil

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

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