1997 SUBARU LEGACY sensor

6. READ DATA FUNCTION KEY LIST FOR ENGINE
Function mode Contents Abbreviation Unit of measure
F00 ROM ID number YEAR—
F01 Battery voltage VB V
F02 Vehicle speed signal VSP km/h, MPH
F03 Engine speed signal EREV rpm
F04 Engine coolant temperature signal TW°C,°F
F05 Ignition signal ADVS deg
F06 Mass air flow signal QA g/s, V
F07 Throttle position signal THV %, V
F08 Injector pulse width TIM mS
F09 Idle air control signal ISC %
F10 Load data LOAD %
F11 Front oxygen sensor output signal O2 V
F12 Front oxygen sensor maximum and minimum output signal O2max - min V, V
F13 Rear oxygen sensor output signal RO2 V
F14 Rear oxygen sensor maximum and minimum output signal RO2max - min V, V
F17 Short term fuel trim ALPHA %
F19 Knock sensor signal KNOCK deg
F20 Atmospheric absolute pressure signal BARO. P kPa, mmHg
F21 Intake manifold absolute pressure signal MANI. P kPa, mmHg
F29A/F correction coefficient [short term trim] by rear oxygen sen-
sorPHOS %
F30 Long term fuel trim [A/F learning correction coefficient] KBLRC %
F31 Long term fuel trim whole [A/F learning control coefficient] K0 %
F32 Front oxygen sensor heater current FO2H A
F33 Rear oxygen sensor heater current RO2H A
F35 Purge control solenoid valve duty ratio CPCD %
F36Maximum value of cylinder #1 misfire times during 100 rota-
tionsMF1 %
F37Maximum value of cylinder #2 misfire times during 100 rota-
tionsMF2 %
F38Maximum value of cylinder #3 misfire times during 100 rota-
tionsMF3 %
F39Maximum value of cylinder #4 misfire times during 100 rota-
tionsMF4 %
F42Maximum and minimum EGR system pressure value (AT
vehicles)EGRmax - min kPa
F43 Fuel tank pressure signal TNKP kPa, mmHg
F44 Fuel temperature signal TNKT°C,°F
F45 Fuel level signal FLEVEL V
FA 0 O N)OFF signal——
FA 1 O N)OFF signal——
FA 2 O N)OFF signal——
FA 3 O N)OFF signal——
FA 4 O N)OFF signal——
FA 5 O N)OFF signal——
FB0 Diagnostic trouble code (DTC) INSPECT—
FB1 Diagnostic trouble code (DTC) OBD—
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

B2M0482
14. FUNCTION MODE: F07
—THROTTLE POSITION SIGNAL (THV)—

Throttle position is indicated in percentage (%) and volt-
age (V) at the same time.
NOTE:
Be sure that the displayed value changes smoothly when
changing throttle valve from fully closed to fully opened.
B2M0483
15. FUNCTION MODE: F08
—INJECTOR PULSE WIDTH (TIM)—
B2M0484
16. FUNCTION MODE: F09
—IDLE AIR CONTROL SIGNAL (ISC)—
B2M0485
17. FUNCTION MODE: F10
—LOAD DATA (LOAD)—
B2M0486
18. FUNCTION MODE: F11
—FRONT OXYGEN SENSOR OUTPUT SIGNAL (O2)
—
46
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

B2M0487
19. FUNCTION MODE: F12
—FRONT OXYGEN SENSOR MAXIMUM AND
MINIMUM OUTPUT SIGNAL (FO2MAX - MIN)—

Front oxygen sensor maximum and minimum output sig-
nals are indicated at the same time.
B2M0488
20. FUNCTION MODE: F13
—REAR OXYGEN SENSOR OUTPUT SIGNAL (RO2)
—
B2M0489
21. FUNCTION MODE: F14
—REAR OXYGEN SENSOR MAXIMUM AND MINIMUM
OUTPUT SIGNAL (RO2MAX - MIN)—

Rear oxygen sensor maximum and minimum output sig-
nals are indicated at the same time.
B2M0490
22. FUNCTION MODE: F17
—SHORT TERM FUEL TRIM [A/F CORRECTION
COEFFICIENT] (ALPHA)—
B2M0491
23. FUNCTION MODE: F19
—KNOCK SENSOR SIGNAL [IGNITION TIMING
CORRECTION COEFFICIENT] (KNOCK)—
47
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

B2M0755
24. FUNCTION MODE: F20
—ATMOSPHERIC ABSOLUTE PRESSURE SIGNAL
(BARO. P)—

Atmospheric absolute pressure is indicated in“kPa”and
“mmHg”at the same time.
B2M0756
25. FUNCTION MODE: F21
—INTAKE MANIFOLD ABSOLUTE PRESSURE
SIGNAL (MANI. P)—

Intake manifold absolute pressure is indicated in“kPa”
and“mmHg”at the same time.
B2M0494
26. FUNCTION MODE: F29
—A/F CORRECTION COEFFICIENT [SHORT TERM
TRIM] BY REAR OXYGEN SENSOR (PHOS)—
B2M0495
27. FUNCTION MODE: F30
—LONG TERM FUEL TRIM [A/F LEARNING
CORRECTION COEFFICIENT] (KBLRC)—
B2M0496
28. FUNCTION MODE: F31
—LONG TERM FUEL TRIM WHOLE [A/F LEARNING
CONTROL COEFFICIENT] (K0)—
48
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

B2M0497
29. FUNCTION MODE: F32
—FRONT OXYGEN SENSOR HEATER CURRENT
(FO2H)—
B2M0498
30. FUNCTION MODE: F33
—REAR OXYGEN SENSOR HEATER CURRENT
(RO2H)—
H2M1325
31. FUNCTION MODE: F35
—PURGE CONTROL SOLENOID VALVE DUTY RATIO
(CPCD)—
B2M0499
32. FUNCTION MODE: F36
—MAXIMUM VALUE OF CYLINDER #1 MISFIRE RATE
DURING 100 ROTATIONS (MF1)—
B2M0500
33. FUNCTION MODE: F37
—MAXIMUM VALUE OF CYLINDER #2 MISFIRE RATE
DURING 100 ROTATIONS (MF2)—
49
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

40. FA MODE FOR ENGINE
Function
modeLED No. Contents Display LED“ON”requirements
FA 03 Neutral switch NT When neutral position signal is entered.
7 Test mode connector UD When test mode connector is connected.
8 AT/MT identification signal AT When AT identification signal is entered.
9 Ignition switch IG When ignition switch is turned ON.
FA 11 Radiator fan relay 2 R2 When radiator fan relay 2 is in function.
2 Knock signal KS When knock signal is entered.
3 Purge control solenoid valve CN When purge control solenoid valve is in function.
4 Fuel pump relay FP When fuel pump relay is in function.
6 Radiator fan relay 1 R1 When radiator fan relay 1 is in function.
7 Air conditioner relay AR When air conditioner relay is in function.
8 Air conditioner switch AC When air conditioner switch is turned ON.
FA 22 AEC signal EC When AEC signal is entered.
3 EAM signal AM When EAM signal is gone out.
4 AEB signal EB When AEB signal is entered.
6 AET signal ET When AET signal is entered.
7 Engine torque control signal TR When engine torque control signal is entered.
FA3 7 Pressure sources switching solenoid valve BRWhen pressure sources switching solenoid valve
is in function.
FA 41 Catalyst CA When diagnosis of catalyzer is finished.
2 EGR system E1 When diagnosis of EGR system is finished.
3 California spec. vehicle identification signal FCWhen Federal spec. vehicle identification signal is
entered.
8 Rear oxygen sensor signal OR When rear oxygen sensor mixture ratio is rich.
9 Front oxygen sensor signal O2 When front oxygen sensor mixture ratio is rich.
FA 56 Vent control solenoid valve AL When vent control solenoid valve is in function.
7 EGR solenoid valve ER When EGR solenoid valve is in function.
8 Pressure control solenoid valve PCWhen pressure control solenoid valve is in
function.
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

LED No. Signal name Display
1 Catalyst CA
2 EGR system E1
3California model
identification signalFC
4——
5——
6——
7——
8 Rear oxygen sensor signal OR
9 Front oxygen sensor signal O2
0——
CA E1 FC——
——OR O2—
1
2345
67890
45. FUNCTION MODE: FA4
—ON↔OFF SIGNAL—
Requirement for LED“ON”.
LED No. 1 Diagnosis of catalyzer is finished.
LED No. 2 Diagnosis of EGR system is finished.
LED No. 3 Vehicle is Federal specifications.
LED No. 8 Rear oxygen sensor mixture ratio is rich.
LED No. 9 Front oxygen sensor mixture ratio is rich.
LED No. Signal name Display
1——
2——
3——
4——
5——
6 Vent control solenoid valve AL
7 EGR solenoid valve ER
8Pressure control solenoid
valvePC
9——
0——
—————
AL ER PC——
1
2345
67890
46. FUNCTION MODE: FA5
—ON↔OFF SIGNAL—
Requirement for LED“ON”.
LED No. 6 Vent control solenoid valve is in function.
LED No. 7 EGR solenoid valve is in function.
LED No. 8 Pressure control solenoid valve is in func-
tion.
NOTE:
When LED No. 6, 7 and 8 blinks with the test mode con-
nector connected and the ignition switch turned to ON, the
corresponding part is functioning properly.
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

51. READ DATA FUNCTION KEY LIST FOR AT
Function mode Contents Abbr. Unit
F00 Mode display E-4AT—
F01 Battery voltage VB V
F02 Vehicle speed sensor 1 signal VSP1 m/h
F03 Vehicle speed sensor 1 signal VSP1 km/h
F04 Vehicle speed sensor 2 signal VSP2 m/h
F05 Vehicle speed sensor 2 signal VSP2 km/h
F06 Engine speed EREV rpm
F07 ATF temperature sensor signal ATFT deg F
F08 ATF temperature sensor signal ATFT deg C
F09 Throttle position sensor signal THV V
F10 Gear position GEAR—
F11 Line pressure duty ratio PLDTY %
F12 Lock-up duty ratio LUDTY %
F13 AWD duty ratio 4WDTY %
F14 Throttle position sensor power supply voltage THVCC V
F15 Mass air flow sensor signal AFM V
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System