Subaru Factory Monitor Descriptions For Accesstuner And V3 Accessport

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May 2021

Introduction

This document provides descriptions of each of the data monitors available to view and log in the current Accesstuner software and V3 Accessport firmware. Not all monitors are available for all vehicles due to differences in vehicle hardware and/or engine control unit (ECU) capabilities. Some monitors are only available in the latest ECU version (strategy) for a given vehicle.

For help with monitors specific to the COBB Custom Features, please see the separate COBB custom monitor guide.

Glossary of Acronyms

• • A/F = Air/Fuel
    
    
  • AT = Automatic Transmission
    
    
  • AVCS = Subaru's Active Valve Control System (i.e. variable valve timing)
    
    
  • CL = Closed Loop fueling
    
    
  • CVT = Continuously Variable Transmission
    
    
  • DAM = Dynamic Advance Multiplier
    
    
  • DIT = Subaru's "Direct Injection Turbo" motor (14-18 FXT, 15+ WRX, 19+ Ascent)
    
    
  • EQ Ratio = Equivalence Ratio
    
    
  • ECU = Engine Control Unit
    
    
  • FXT = Forester XT model
    
    
  • LGT = Legacy GT model
    
    
  • MAF = Mass Airflow
    
    
  • MT = Manual Transmission
    
    
  • OL = Open Loop fueling
    
    
  • RPM = Revolutions Per Minute (referring to engine speed)
    
    
  • TGV = Tumble Generator Valve
    
    
  • TPS = Throttle Position Sensor (or more generically referring to throttle position)
    
    
  • VDC = Vehicle Dynamics Control
    
    
  • VSS = Vehicle Speed Sensor (or more generically referring to vehicle speed)

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Battery Voltage (Battery Volts) -> Battery voltage as determined by the battery voltage input to the ECU.

Boost Limits Base TABLE FINAL Rel Sea Level (Limits Boost Table Base Final Rel SL) -> This is the table value from the Boost Limits tableboost limit after all applicable boost compensations have been applied.

Boost Limits FINAL Base TABLE Rel Sea Level (Limits Boost Final Table Base Rel SL) -> This is the boost limit after all applicable boost compensations have been appliedtable value from the Boost Limits table.

Boost Limits TABLE Rel Sea Level (Limits Boost Table Rel SL) -> This is the table value from the Boost Limits table.

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Coolant Temperature (Coolant Temp) -> Coolant temperature based on the engine coolant temperature sensor.

CPC Purge Flow (CPC Purge Flow) -> Estimated current canister purge flow as determined by the ECU.

CPC Purge Fuel Learning (CPC Purge Fuel Learn) -> Canister purge trim learning component as determined by the ECU.

CPC Purge Fuel Trim (CPC Purge Fuel Trim) -> Fuel trim adder based on learning during canister purge control events. This correction is NOT reflected in other fuel trim monitors.

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