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Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.0L) - Introduction >> Active Test >> Operation
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Active Test: Operation

CAUTION: After executing the system operation check mode, execute the Clear Memory Mode. Refer to ENGINE (DIAGNOSTICS) (W/O STI)>CLEAR MEMORY MODE>OPERATION .
NOTE: For operation procedures, refer to the "Help for Subaru Select Monitor".
  1. On «Start» display, select «Diagnosis».
  2. On «Vehicle selection» display, input the vehicle information and select «Confirmed».
  3. On «Main Menu» display, select «Each System».
  4. On «Select System» display, select «Engine Control System» and then select «Enter».
  5. On «Select Function» display, select «Active Test».
Active test items Contents Execution condition
Fuel Pump Relay ON/OFF of the fuel pump can be set. Ignition switch is ON (engine OFF)
CPC Solenoid Valve ON/OFF of the purge control solenoid valve can be set.
Radiator Fan Relay ON/OFF of the radiator fan relay can be set.
A/C Compressor Relay ON/OFF of the A/C relay can be set.
Turbocharger Wastegate Solenoid ON/OFF of the wastegate control solenoid valve can be set.
CPC Solenoid 2 ON/OFF of the purge control solenoid valve 2 can be set.
ELCONTROL MODULE switching valve ON/OFF of the leak check valve assembly switching valve can be set.
ELCONTROL MODULE pump ON/OFF of the leak check valve assembly vacuum pump can be set.
Fuel Pump Control (OFF Drive) Fuel pump can be set to OFF. At idling
Fixed Idle Ignition Timing Idle ignition timing can be set.
Idle Speed Control Idle speed can be set.
Injection Stop Mode (Injector 1) Injection Stop Mode (Injector 2) Injection Stop Mode (Injector 3) Injection Stop Mode (Injector 4) Injector of each cylinder can be set to stop the fuel injection.
Injection Quantity Control The amount of fuel injection can be set.
EGR Valve Control (Step) Number of EGR control valve STEP can be set.
High Pressure Fuel Inspection High pressure fuel pipe inspection can be executed.
Alternator control Alternator control mode can be set to one of the followings:
Low mode
Middle mode
High mode
ExHigh mode (1)
Compression monitor Compression can be measured.
  • Ignition switch is ON (engine OFF)
  • Accelerator pedal is fully depressed
(1) Indicator voltage is the same as in High mode.