Subaru Factory Monitor Descriptions For Accesstuner And V3 Accessport

January

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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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Accelerator Voltage MAIN (Accel VoltVolts Main) -> Main accelerator pedal position sensor output voltage.

Accelerator Voltage SUB (Accel Volt Volts Sub) -> Sub accelerator pedal position sensor output voltage.

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AF Sensor 3 Voltage (AF Sens 3 VoltVolts) -> Rear oxygen sensor output voltage.

AF Sensor 3 Voltage DIRECT (AF Sens 3 Volt Volts Direct) -> Rear oxygen sensor output voltage direct (higher precision and full 0-5v range as compared to non-direct monitor).

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AVCS Exhaust Right (AVCS Exh Right) -> Exhaust Active Valve Control System (AVCS) timing for the right bank based on the corresponding exhaust camshaft position sensor.

AVCS Exhaust Target Final With Comps TABLE TGV CLOSED (AVCS Exh TGV CL Table) -> This is the table value from the AVCS Exhaust Cam Retard Target (TGVs Closed) table before any compensations are applied.

AVCS Exhaust Target TABLE TGV CLOSEDOPEN (AVCS Exh TGV CL OP Table) -> This is the table value from the AVCS Exhaust Cam Retard Target (TGVs ClosedOpen) table before any compensations are applied.

AVCS Exhaust Target With Comps TABLE TGV OPEN (AVCS Exh TGV OP Table) -> This is the table value from the AVCS Exhaust Cam Retard Target (TGVs Open) table before any compensations are table with some compensations applied.

AVCS Intake Left (AVCS In Left) -> Intake Active Valve Control System (AVCS) timing for the left bank based on the corresponding intake camshaft position sensor.

AVCS Intake Right (AVCS In Right) -> Intake Active Valve Control System (AVCS) timing for the right bank based on the corresponding intake camshaft position sensor.

AVCS Intake Target Final With Comps TABLE (AVCS In Table) -> This is the table value from the AVCS Intake Cam Advance Target table before any compensations are applied.

AVCS Intake Target TABLE TGV CLOSED (AVCS In TGV CL Table) -> This is the table value from the AVCS Intake Cam Advance Target (TGVs Closed) table before any compensations are applied.

AVCS Intake Target TABLE TGV CLOSEDOPEN (AVCS In TGV CL OP Table) -> This is the table value from the AVCS Intake Cam Advance Target (TGVs ClosedOpen) table before any compensations are applied.

AVCS Intake Target With Comps TABLE TGV OPEN (AVCS In TGV OP Table) -> This is the table value from the AVCS Intake Cam Advance Target (TGVs Open) table before any compensations are table with some compensations applied.

Barometric Pressure (Baro Pressure) -> Barometric pressure based on the barometric pressure sensor.

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

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Crankshaft Position Switch (Crankshaft Sw) -> Crankshaft position sensor output. Value is ON (or 1) with crankshaft rotation (i.e. when the engine is running).

CVT Lockup Status (CVT Lockup Status) -> Continuously variable transmission (CVT) torque converter lock-up state: 0 = Open, 2 = Partial, 4 = Full.

CVT Temperature (CVT Temp) -> Continuously variable transmission (CVT) fluid temperature as reported by the transmission control module (TCM).

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Dynamic Advance Multiplier (Dyn Adv Mult) -> This is a learned correction applied to dynamic advance. The dynamic advance multiplier (DAM) is one of three knock responses. When conditions dictate that a change to the DAM is to occur, the current knock signal is referenced and the DAM is set to an initial value. If a knock event has occurred, the DAM will decrease. If there's no knock event, the DAM will increase (if no knock over a delay period). The DAM is reset to an initial value after an ECU reset or after a reflash. For the 02-05 WRX, the DAM ranges from 0 to 16 and its application to dynamic advance can be calculated as follows: dynamic advance map value * (DAM/16). For all other ECUs, the DAM ranges from 0 to 1 (decimal value) and is applied as follows: dynamic advance map value * DAM.

EGR ActualCommanded (EGR ActualCommanded) -> Exhaust Gas Recirculation (EGR) valve actualcommanded.

EGR CommandedEstimate (EGR CommandedEstimate) -> Exhaust Gas Recirculation (EGR) valve commandedactual as estimated by the ECU.

Engine Run Time (Engine Run Time) -> This is the counter that is incremented when the engine is running.

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Engine Start MODE (Engine Start Mode) -> Engine start mode used as an input to some post-start enrichment tables.

Engine Torque (Engine Torque) -> Engine torque estimate by the ECU.

Evap Related Fuel Adder (Evap Fuel Adder) -> Evaporative systems related fuel adder (EQ ratio).

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Exhaust Gas Temperature Voltage DIRECT (EGT Volt Volts Direct) -> Exhaust Gas Temperature sensor output voltage direct.

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Fuel Temperature Voltage DIRECT (Fuel Temp Volt Volts Direct) -> Fuel temperature sensor output voltage direct.

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Idle Speed Target (Idle Spd Target) -> Idle RPM target as determined by the ECU.

Idle Table Mode (Idle Table Mode) -> Idle mode that determines switching between multiple "Idle Speed Targets" tables.

Ignition Switch (Ignition Sw) -> Ignition switch status. Value is ON (or 1) when the ignition switch is on.

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Knock Sum (Knock Sum) -> Counter which is incremented when a non-consecutive knock event, as perceived by the ECU, occurs. This value may be reset to zero when a certain threshold is reached. Note: This On some ECUs, this counter may be incremented even at idle and low load/RPM where false knock detection is a greater probability.

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Mass Airflow Frequency (MAF Freq) -> Mass airflow sensor output frequency.

Mass Airflow Voltage (MAF VoltVolts) -> Mass airflow sensor output voltage.

Mass Airflow Voltage DIRECT (MAF Volt Volts Direct) -> Mass airflow sensor output voltage direct (higher precision as compared to non-direct monitor).

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TGV Output Switch (TGV Output Sw) -> Tumble generator valve output status as determined by the ECU. Value is ON (or 1) when ECU intends to change the position of the TGVs.

TGV Voltage Left (TGV Volt Volts Left) -> Tumble generator valve (TGV) output voltage as determined by the TGV position sensor in the left bank.

TGV Voltage Left DIRECT (TGV Volt Volts Left Direct) -> Tumble generator valve (TGV) output voltage direct (higher precision and unfilitered as compared to non-direct monitor) as determined by the TGV position sensor in the left bank.

TGV Voltage Left DIRECT Smoothed (TGV Volt Volts Left Direct Sm) -> Tumble generator valve (TGV) output voltage direct smoothed (higher precision as compared to non-direct monitor) as determined by the TGV position sensor in the left bank.

TGV Voltage Right (TGV Volt Volts Right) -> Tumble generator valve (TGV) output voltage as determined by the TGV position sensor in the right bank.

TGV Voltage Right DIRECT (TGV Volt Volts Right Direct) -> Tumble generator valve (TGV) output voltage direct (higher precision and unfilitered as compared to non-direct monitor) as determined by the TGV position sensor in the right bank.

TGV Voltage Right DIRECT Smoothed (TGV Volt Volts Right Direct Sm) -> Tumble generator valve (TGV) output voltage direct smoothed (higher precision as compared to non-direct monitor) as determined by the TGV position sensor in the right bank.

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TPS Duty (TPS Duty) -> Throttle motor duty as determined by the ECU. This value is manipulated in order to hit a throttle target.

TPS Voltage (TPS VoltageVolts) -> Throttle position sensor output voltage.

TPS Voltage MAIN (TPS VoltageVolts Main) -> Main throttle position sensor output voltage.

TPS Voltage SUB (TPS Voltage Volts Sub) -> Sub throttle position sensor output voltage.

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