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Home >> Lexus >> 2007 >> LS 460 >> Repair and Diagnosis >> External Pages >> Different car >> Section 794 (Engine Control System - Introduction (VQ40DE)) >> System Description >> Diagnosis System (ECM) >> Diagnosis Description >> CONSULT Function >> Active Test Mode
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Active Test Mode

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

Test Item

TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
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
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.
POWER BALANCE
  • Engine: After warming up, idle the engine.
  • A/C switch: OFF
  • Shift lever: P or N
  • 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
COOLING FAN(1)
  • Ignition switch: ON
  • Turn the cooling fan HI, LOW and OFF using CONSULT.
 Cooling fan moves and stops.
  • Harness and connectors
  • Cooling fan motor
  • IPDM E/R
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 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
  • Turn solenoid valve ON and OFF with CONSULT and listen for operating sound.
 Solenoid valve makes an operating sound.
  • Harness and connectors
  • Solenoid valve
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.
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
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
ALTERNATOR DUTY
  • Engine: Idle
  • Change duty ratio using CONSULT.
 Battery voltage changes.
  • Harness and connectors
  • IPDM E/R
  • Alternator
(1) Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.
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