Suzuki 2006 SX4, Service Manual

Page: 89 / 1478

Engine General Information and Diagnosis: 1A-45
MAF (MASS AIR FLOW RATE, g/s, lb/min.)
It represents total mass of air entering intake manifold
which is measured by mass air flow sensor.
CALC LOAD (CALCULATED LOAD VALUE, %)
Engine load displayed as a percentage of maximum
possible load. Value is calculated mathematically using
the formula: actual (current) intake MAF
÷
maximum
possible intake MAF
×
100%
THROTTLE POS (ABSOLUTE THROTTLE POSITION,
%)
When TP sensor is at fully closed position, throttle
opening is indicated as 0 – 5% and 90 – 100% full open
position.
BAROMETRIC PRESS (kPa, in.Hg)
This parameter represents a measurement of barometric
air pressure and is used for altitude correction of the fuel
injection quantity.
FUEL TANK LEVEL (%)
This parameter indicates approximate fuel level in fuel
tank. As detectable range of fuel level sensor is set as 0
to 100%, however, with some models whose fuel tank
capacity is smaller, indicated fuel level may be only 70%
even when fuel tank is full.
BATTERY VOLTAGE (V)
This parameter indicates battery positive voltage
inputted from main relay to ECM.
BRAKE SW (ON/OFF)
This parameter indicates the state of the brake switch.
IMT VALVE ACTUATOR (INTAKE MANIFOLD TUNING
VALVE, OPEN/CLOSE)
This parameter indicates the state of IMT valve actuator.
FUEL SYSTEM B1 (FUEL SYSTEM STATUS)
Air/fuel ratio feedback loop status displayed as one of
the followings.
OL: Open-loop has not yet satisfied engine conditions
(ECT > 10
°
C, IAT, TP, A/F sensor/system = OK) to go
closed loop.
CL: Closed-loop using oxygen sensor(s) as feedback for
fuel control.
OL-DRIVE: Open-loop due to driving conditions (Power
enrichment, etc.).
OL-FAULT: Open-loop due to detected system fault.
O2S SENSOR B1 S2 (HEATED OXYGEN SENSOR-2,
V)
It indicates output voltage of HO2S installed on exhaust
No.1 pipe (post-WU-TWC). 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 FT TRIM B1 (TOTAL FUEL TRIM, %)
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-WU-TWC).
FUEL CUT (ON/OFF)
CUT: Fuel being cut (output signal to injector is stopped)
STOP: Fuel not being cut
O2S B1 S2 ACT (HEATED OXYGEN SENSOR-2,
ACTIVE / INACTIVE)
This parameter indicates activation condition of HO2S
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.
FUEL PUMP (ON/OFF)
ON is displayed when ECM activates the fuel pump via
the fuel pump relay switch.