1A-41 Engine General Information and Diagnosis:
BRAKE SW (ON/OFF)
This parameter indicates the state of the brake switch.
INTAKE TUNING SOL (INTAKE MANIFOLD TUNING
VALVE, ON/OFF):
ON: Command for intake manifold tuning valve being
output.
OFF: Command for intake manifold tuning valve not
being output.
FUEL SYSTEM (FUEL SYSTEM STATUS)
Air/fuel ratio feedback loop status displayed as one of
the followings.
OPEN: Open-loop has not yet satisfied conditions to go
closed loop.
CLOSED: Closed-loop using oxygen sensor(s) as
feedback for fuel control.
OPEN-DRIVE COND: Open-loop due to driving
conditions (Power enrichment, etc.).
OPEN SYS FAULT: Open-loop due to detected system
fault.
O2S SENSOR B1 S2 (HEATED OXYGEN SENSOR-2,
V)
It indicates output voltage of HO2S-2 installed on
exhaust No.1 pipe (post-catalyst). It is used to detect
catalyst deterioration.
SHORT FT B1 (SHORT TERM FUEL TRIM, %)
Short term fuel trim value represents short term
corrections to the air/fuel mixture computation. A value
of 0 indicates no correction, a value greater than 0
means an enrichment correction, and a value less than 0
implies an enleanment correction.
LONG FT B1 (LONG TERM FUEL TRIM, %)
Long term fuel trim value represents long term
corrections to the air/fuel mixture computation. A value
of 0 indicates no correction, a value greater than 0
means an enrichment correction, and a value less than 0
implies an enleanment correction.
TOTAL FUEL TRIM B1 (%)
The value of Total Fuel Trim is obtained by calculating
based on values of Short Term Fuel Trim and Long Term
Fuel Trim. This value indicates how much correction is
necessary to keep the air/fuel mixture stoichiometrical.
A/F B1 S1 CURRENT (A/F SENSOR OUTPUT
CURRENT, mA):
This parameter indicates output current of A/F sensor
installed on exhaust No.1 pipe (pre-catalyst).
FUEL CUT (ON/OFF)
ON: Fuel being cut (output signal to injector is stopped)
OFF: Fuel not being cut
O2S B1 S2 ACT (HEATED OXYGEN SENSOR-2,
ACTIVE / INACTIVE):
This parameter indicates activation condition of HO2S-2
ACTIVE: Activating
INACTIVE: warming up or at stop.
A/F B1 S1 ACT (A/F SENSOR, ACTIVE / INACTIVE):
This parameter indicates activation condition of A/F
sensor
ACTIVE: Activating
INACTIVE: warming up or at stop
CANIST PRG DUTY (EVAP CANISTER PURGE FLOW
DUTY, %)
This parameter indicates valve ON (valve open) time
rate within a certain set cycle of EVAP canister purge
valve which controls the amount of EVAP purge.
IGNITION ADVANCE (IGNITION TIMING ADVANCE
FOR NO.1 CYLINDER,
°
)
Ignition timing of No.1 cylinder is commanded by ECM.
The actual ignition timing should be checked by using
the timing light.
EGR VALVE OPENING (%)
This parameter indicates opening rate of EGR valve
which controls the amount of EGR flow.
VVT GAP (TARGET-ACTUAL POSITION,
°
) (for M16
engine)
It is calculated using the formula: target valve timing
advance – actual valve timing advance.
GENERATOR CONT DUTY (GENERATOR CONTROL
DUTY, %):
This parameter indicates generator control duty which
ECM uses to control amount of generated electricity of
generator
100%: No restriction applied to generation
0%: Maximum restriction applied to generation
GENERATOR FIELD DUTY (GENERATOR FIELD
COIL DUTY, %):
This parameter indicates operation rate (generation
condition) of generator using operation duty of generator
field coil.
100%: Maximum operation
0%: Minimum operation
FUEL PUMP (ON/OFF)
ON is displayed when ECM activates the fuel pump via
the fuel pump relay switch.
STARTER SW (STARTER SWITCH, ON / OFF):
This parameter indicates condition of starting motor relay
output.
ON: Starting motor relay is ON
OFF: Starting motor relay is OFF
A/C PRESSURE (A/C REFRIGERANT ABSOLUTE
PRESSURE, kPa)
This parameter indicates A/C refrigerant absolute
pressure calculated by ECM.
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