Subaru Legacy 2002 Service Manual page 555

Engine (Diagnostics)
6. READ FREEZE FRAME DATA FOR ENGINE. (OBD MODE)
1) On the Main Menu
2) On the System Selection Menu
[YES] key.
3) Press the [YES] key after displayed the information of engine type.
4) On the Engine Diagnosis
5) On the OBD Menu
¼ A list of the support data is shown in the following table.
Diagnostic trouble code (DTC) for freeze frame data
Air fuel ratio control system for bank 1
Engine load data
Engine coolant temperature signal
Short term fuel trim by front oxygen (A/F) sensor
Long term fuel trim by front oxygen (A/F) sensor
Intake manifold absolute pressure signal
Engine speed signal
Vehicle speed signal
NOTE:
For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
7. READ OXYGEN SENSOR MONITORING TEST RESULTS DATA FOR ENGINE. (OBD
MODE)
S078503A1607
1) On the Main Menu
2) On the System Selection Menu
[YES] key.
3) Press the [YES] key after displayed the information of engine type.
4) On the Engine Diagnosis
5) On the OBD Menu
6) On the O2 Sensor Select
the [YES] key.
¼ Bank 1-Sensor1 indicates the front oxygen or A/F sensor, and Bank 1-Sensor2 indicates the rear oxy-
gen sensor.
¼ A list of the support data is shown in the following table.
Oxygen sensor for monitoring test
Rich to lean oxygen sensor threshold voltage
Lean to rich oxygen sensor threshold voltage
Low oxygen sensor voltage for switch time calculation
High oxygen sensor voltage for switch time calculation
Rich to lean oxygen sensor switch time
Lean to rich oxygen sensor switch time
Maximum oxygen sensor voltage for test cycle
Minimum oxygen sensor voltage for test cycle
NOTE:
For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
SUBARU SELECT MONITOR
display screen, select the {Each System Check} and press the [YES] key.
display screen, select the {Engine Control System} and press the
display screen, select the {OBD System} and press the [YES] key.
display screen, select the {Freeze Frame Data} and press the [YES] key.
Contents
display screen, select the {Each System Check} and press the [YES] key.
display screen, select the {Engine Control System} and press the
display screen, select the {OBD System} and press the [YES] key.
display screen, select the {O2 Sensor Monitor} and press the [YES] key.
display screen, select the {Bank 1-Sensor1} or {Bank 1-Sensor2} and press
Contents
Display
Freeze frame data
Fuel system for Bank1
Engine Load
Coolant Temp.
Short term fuel trim B1
Long term fuel trim B1
Mani. Absolute Pressure
Engine Speed
Vehicle Speed
Display
<O2 Sensor Monitor (-------)>
Rich to lean sensor volt
Lean to rich sensor volt
Low sensor voltage
High sensor voltage
Rich to lean switch time
Lean to rich switch time
Maximum sensor Voltage
Minimum sensor Voltage
EN-38
S078503A1606
Unit of measure
DTC
ON or OFF
%
°C or °F
%
%
mmHg or kPa or inHg or
psi
rpm
km/h or MPH
Unit of measure
—
V
V
V
V
sec
sec
V
V