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Home >> Subaru >> 2003 >> Outback Base, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 3.0L >> Self-Diagnostic System >> SUBARU Select Monitor (SSM) Procedure >> Read Current Data For Engine (SSM)
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Read Current Data For Engine (SSM)

  1. On <Main Menu> display screen, select {Each System Check} and press [YES] key.
  2. On <System Selection Menu> display screen, select {Engine Control System} and press [YES] key.
  3. Press [YES] after displayed information of engine type.
  4. On <Engine Diagnosis> display screen, select {Current Data Display & Save} and press [YES] key.
  5. On <Data Display Menu> display screen, select {Data Display} and press [YES] key.
  6. Using scroll key, move display screen up or down until desired data is shown, see Fig 1 and Fig 2 .

For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For select monitor display details, refer to the following:

  1. Engine Load: Displayed 0-100% -  ECM calculates engine load via engine speed and signals from pressure sensor. Engine load increases when engine speed and absolute pressure of intake manifold increase.
  2. Coolant Temperature: Displayed -40-419°F (-40-215°C) -  Coolant temperature transmitted from engine coolant temperature sensor is displayed.
  3. ATF Correction No. 1, No. 2 & No. 3: Displayed -100-99% -  Using signal from front oxygen Air Fuel (A/F) sensor, correction value of fuel supply amount regulated by ECM is indicated. When A/F is lean and when displayed value becomes zero percent or more, ECM increases fuel. When A/F is rich and when displayed value becomes zero or less, ECM decreases fuel.
  4. A/F Learning No. 1, No. 2 & No. 3: Displayed -100-99.2% -  ECM calculates long-term fuel trim value from short-term fuel trim value. Long-term fuel trim value means the correction value of long-term fuel supply amount. If displayed value is less than zero percent, fuel system is in rich status and ECM restricts fuel supply (by shortening injector pulse). If displayed value is more than zero percent, fuel system is in lean status and ECM increases fuel supply (by extending injector pulse).
  5. Manifold Absolute Pressure: Displayed 0-254.9 kPa (0-75.3 inHg) -  Pressure in intake manifold is displayed. ECM detects pressure in intake tube via signal from pressure sensor. ECM calculates air mass required for engine.
  6. Engine Speed: Displayed 0-16,383 RPM -  Engine speed transmitted from crankshaft position sensor is detected.
  7. Vehicle Speed: Displayed 0-158 MPH (0-255 km/h) -  vehicle speed transmitted from vehicle speed sensor is displayed.
  8. Ignition Timing: Displayed -64-63.5 degrees -  Advanced ignition timing value is displayed. ECM calculates advanced ignition timing value using engine coolant temperature, engine speed, and engine load.
  9. Intake Air Temperature: Displayed 104-419°F (40-215°C) -  Intake air temperature is displayed. ECM detects intake air temperature via signal from intake air temperature sensor, and corrects ignition timing and fuel supply amount.
  10. Rear HO2S Sensor: Displayed 0-327.7 Volts -  ECM corrects air-fuel ratio by signal sent from HO2S sensor. Also, signal is used for catalyst degradation diagnosis.
  11. Battery Voltage: Displayed 0-20.4 Volts -  Battery voltage is displayed.
  12. Throttle Sensor Voltage: Displayed 0-5 Volts -  Throttle angle is displayed in voltage. When throttle is fully-closed, displayed voltage value is approximately 0.5 volts. When it is fully-open, voltage is approximately 4 volts or more.
  13. Fuel Injection No. 1 & No. 2 Pulse: Displayed 0-214.2 ft/sec (0-65.3 m/sec) -  Injector valve opening time is displayed. The longer the injector valve opening time, the more fuel is supplied. The higher engine load, the longer injector valve opening time becomes.
  14. Knocking Correction: Displayed -64-63.5 Degrees -  ECM controls ignition timing via signal from knock sensor.
  15. Atmosphere Pressure: Displayed 0-254.9 kPa (0-75.3 inHg) -  Atmospheric pressure is displayed. ECM detects atmospheric pressure via signal from atmosphere sensor.
  16. Manifold Relative Pressure: Displayed 0-126.9 kPa (0-37.5 inHg) -  A value calculated by subtracting absolute pressure in intake tube from atmospheric pressure, is displayed. A larger load leads to a larger value.
  17. Fuel Tank Pressure: Displayed 0-3.2 kPa (0-0.94 inHg) -  Pressure in fuel tank is displayed.
  18. Fuel Temperature: Displayed -40-215°C -  Fuel temperature is displayed. ECM detects fuel temperature via signal from fuel temperature sensor. This signal is used for evaporation diagnosis.
  19. Front HO2S Heater Current: Displayed 0-10 Amps -  Heater current of A/F sensor is displayed. A larger current value leads to increased heat generation.
  20. Rear HO2S Heater Current: Displayed 0-10 Amps -  Heater current of rear HO2S sensor is displayed. A larger current value leads to increased heat generation.
  21. Fuel Level: Displayed 0-5 Volts -  Float inside fuel tank is a variable resistor which varies resistance based on fuel level. ECM then averages this voltage and signal voltage from fuel tank in order to determine fuel level. Scan tool displays close to 0.7 volts for an empty tank, and close to 5 volts for a full tank.
  22. CPC Valve Duty Ratio: Displayed 0-100% -  Purge control solenoid valve is regulated by ECM. Displayed value of zero percent indicates that purge amount is zero, and 100 percent indicates that purge amount becomes maximum.
  23. A/F Sensor No. 1 & No. 2: Displayed 0-2 -  Air surplus ratio output from front oxygen (A/F) sensor is displayed. Air overflow ratio = 1.0 is regarded as a stoichiometric A/F ratio. A value above 1.0 indicates A/F lean range, and below 1.0 indicates A/F rich range.
  24. A/F Correction No. 3 -  Correction value of fuel supply amount regulated by ECM via signal from rear oxygen sensor is displayed.
  25. ALT Duty: Display 0-100% -  Output from generator is displayed. Displayed value of zero percent indicates that no regulation is done, and 100 percent indicates that generator output is controlled at lower level.
  26. A/F Sensor No. 1 & No. 2 Current: Displayed -16-15.9 mA -  A value of zero mA is regarded as a stoichiometric A/F ratio. A negative value indicates A/F rich range, and positive value indicates A/F lean range.
  27. A/F Sensor No. 1 & No. 2 Resistance: Display 0-255 Ohms -  Resistance value of front oxygen (A/F) sensor is displayed. At idle after warm-up, resistance value shows 27 to 32 ohm.
  28. ISC Valve Duty Ratio: Displayed 0-127.5% -  Duty value of idle air control solenoid valve is displayed. Value is regulated by ECM. Displayed value of zero percent indicates that air bypass circuit is closed, and 100 percent indicates that it is fully open.
  29. No. Of EGR Steps: Displayed 0-255 Step -  Number of EGR valve steps is displayed. EGR valve is driven by stepping motor, and number of steps is regulated by ECM. A value of zero steps indicates that EGR ratio is zero percent.
  30. Rear HO2S Heater Voltage: Displayed 0-5.1 Volts -  Heater voltage value of rear oxygen sensor is displayed. Heater current duty-controlled by driving range regulates heater temperature.
  31. A/F Heater Current 1 & 2: Displayed 0-25.5 Amps -  Heater voltage value of front oxygen (A/F) sensor is displayed. To stabilize output, heater current is regulated to keep heater temperature to specified value.
  32. A/T Vehicle ID Signal: Display "ON" Or "OFF" -  A/T and M/T vehicles are identified. For A/T vehicles, "ON" is displayed, and for M/T ones, "OFF" is displayed.
  33. Neutral Position Switch: Displayed "ON" Or "OFF" -  When shift lever stays in neutral position, "ON" is displayed. When in other positions, "OFF" is displayed.
  34. Idle Switch Signal: Displayed "ON" Or "OFF" -  When accelerator pedal is released fully, "ON" is displayed. When depressed fully, "OFF" is displayed.
  35. P/S Switch: Display "ON" Or "OFF" -  When steering wheel is turned fully, "ON" is displayed. When returned, "OFF" is displayed. This signal is used for idle control or other controls.
  36. A/C Switch: Displayed "ON" Or "OFF" -  When A/C switch is turned "ON", "ON" is displayed. When turned "OFF", "OFF" is displayed. This signal is used for idle control or other controls.
  37. Starter Switch: Displayed "ON" Or "OFF" -  When vehicle is cranking, "ON" is displayed. When not cranking, "OFF" is displayed.
  38. Rear HO2S Rich Signal: Displayed "ON" Or "OFF" -  When A/F ratio is rich, "ON" is displayed. When lean, "OFF" is displayed.
  39. Knocking Signal: Displayed "ON" Or "OFF" -  When knocking occurs and ignition timing is retarded, "ON" is displayed. At any other time, "OFF" is displayed.
  40. Crankshaft Position Signal: Displayed "ON" Or "OFF" -  When a crankshaft signal exists, "ON" is displayed. At any other time (at engine stall), "OFF" is displayed.
  41. Camshaft Position Signal: Displayed "ON" Or "OFF" -  When a camshaft signal exists, "ON" is displayed. At any other time (at engine stall), "OFF" is displayed.
  42. Rear Defogger SW: Displayed "ON" Or "OFF" -  When rear defogger switch is turned "ON", "ON" is displayed. When turned "OFF", "OFF" is displayed. This signal is used for idle control or other controls.
  43. Blower Fan SW: Displayed "ON" Or "OFF" -  When blower fan switch is turned "ON", "ON" is displayed. When turned "OFF", "OFF" is displayed. This signal is used for idle control or other controls.
  44. Light Switch: Displayed "ON" Or "OFF" -  When light switch is turned "ON", "ON" is displayed. When turned "OFF", "OFF" is displayed. This signal is used for idle control or other controls.
  45. A/C Lock Signal: Displayed "ON" Or "OFF" -  Whether or not active or inactive. When A/C compressor is active, "ON" is displayed. When inactive, "OFF" is displayed.
  46. A/C Mid Pressure Switch: Displayed "ON" Or "OFF" -  Status of A/C compressor is detected. When A/C compressor voltage is high, "ON" is displayed. When low, "OFF" is displayed.
  47. A/C Compressor Signal: Displayed "ON" Or "OFF" -  When A/C clutch is engaged, "ON" is displayed. When disengaged, "OFF" is displayed.
  48. Radiator Fan Relay No. 1, No. 2 & No. 3: Displayed "ON" Or "OFF" -  When radiator fan relay is "ON" (radiator fan operates), "ON" is displayed. When "OFF" (radiator fan stops), OFF is displayed.
  49. Fuel Pump Relay: Displayed "ON" Or "OFF" -  When fuel pump relay is "ON" (fuel pump operates), "ON" is displayed. When "OFF" (fuel pump stops), "OFF" is displayed.
  50. PCV Solenoid Valve: Displayed "ON" Or "OFF" -  Status of pressure control solenoid valve is displayed. When pressure control solenoid valve is closed, "OFF" is displayed. When open, "ON" is displayed. During an evaporation leak diagnosis, pressure control solenoid valve is only open when vacuum in intake tube is taken into fuel tank.
  51. Vent Solenoid Valve: Displayed "ON" Or "OFF" -  Status of drain valve is displayed. When drain valve is closed, "ON" is displayed. When open, "OFF" is displayed. Except during an evaporation leak diagnosis, drain valve is always open.
  52. Torque Control Signal No. 1 & No. 2: Displayed "ON" Or "OFF" -  When a torque down signal exists, "ON" is displayed. When it doesn't, "OFF" is displayed.
  53. Torque Permission Signal: Displayed "ON" Or "OFF" -  Signal which notifies whether or not torque down is possible is displayed. This signal is transmitted from ECU in response to a torque down signal from TCU. When torque down is prohibited, "ON" is displayed. When permitted, "OFF" is displayed.
  54. Variable Intake Air Solenoid: Displayed "ON" Or "OFF" -  Status of induction control valve is displayed. When valve is closed for control to improve low and mid speed range, "ON" is displayed. When open, "OFF" is displayed.

Fig 1: Identifying Subaru Select Monitor Support Data (1 Of 2)
G00168845Courtesy of SUBARU OF AMERICA, INC.
Fig 2: Identifying Subaru Select Monitor Support Data (2 Of 2)
G00168846Courtesy of SUBARU OF AMERICA, INC.
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