LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2012 >> Sentra SE-R >> Repair and Diagnosis (Single Page) >> External Pages >> Different variant/trim >> Section 15 (Engine Control System - Introduction (MR20DE) (Except CALIFORNIA)) >> Service Information >> Trouble Diagnosis >> CONSULT Function (ENGINE) >> Active Test Mode
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Active Test Mode

WARNING: This page is about a different variant/trim than selected.

Test Item

Test Item Condition Judgment 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
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
  • Shift lever: P or N (CVT), Neutral (M/T)
  • Cut off each fuel 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
COOLING FAN(1)
  • Ignition switch: ON
  • Turn the cooling fan "LOW", "MID", "HI" and "OFF" with CONSULT.
 Cooling fan moves and stops.
  • Harness and connectors
  • Cooling fan relay
  • Cooling fan motor
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 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
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
  • EVAP canister purge volume control 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
  • EVAP canister vent control valve
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
(1) Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.
scientia non olet · About LEMON Manuals