Fuel System (Fuel System Status); Calc Load (Calculated Load Value, %); Short Ft B1 (Short Term Fuel Trim, %); Long Ft B1 (Long Term Fuel Trim, %) - Suzuki Ignis Service Manual

SCAN TOOL DATA
PNP SIGNAL (PARK/NEU-
TRAL POSITION SIGNAL)
A/T only
EGR VALVE
∆
FUEL TANK LEVEL
BAROMETRIC PRESS
FUEL PUMP
BRAKE SW
BLOWER FAN
A/C MAG CLUTCH
SCAN TOOL DATA DEFINITIONS :

FUEL SYSTEM (FUEL SYSTEM STATUS)

Air/fuel ratio feedback loop status displayed as either open or closed loop. Open indicates that ECM ignores
feedback from the exhaust oxygen sensor.
Closed indicates final injection duration is corrected for oxygen sensor feedback.

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 air volume ÷ maximum possible intake air volume x 100%.
COOLANT TEMP. (ENGINE COOLANT TEMPERATURE, °C, °F)
It is detected by engine coolant temp. sensor

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 indi-
cates 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 indi-
cates no correction, a value greater than 0 means an enrichment correction, and a value less than 0 implies an
enleanment correction.
MAP (INTAKE MANIFOLD ABSOLUTE PRESSURE, kPa, inHg)
It is detected by manifold absolute pressure sensor and used (among other things) to compute engine load.
ENGINE SPEED (rpm)
It is computed by reference pulses from crankshaft position sensor.
VEHICLE SPEED (km/h, MPH)
It is computed based on pulse signals from vehicle speed sensor.
VEHICLE CONDITION
Ignition switch Selector lever in "P" or "N"
ON position
Selector lever in "R", "D",
"2" or "L" position
At specified idle speed after warming up
–
–
Within 3 seconds after ignition switch ON or
engine running
Engine stop at ignition switch ON.
Ignition switch Brake pedal is depressing
ON
Brake pedal is releasing
Ignition switch Blower fan switch ON
ON
Blower fan switch OFF
Ignition switch A/C switch ON
ON
A/C switch OFF
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-33
NORMAL CONDITION/
REFERENCE VALUES
Display the barometric pres-
P/N Range
D Range
0%
0 – 100%
sure
ON
OFF
ON
OFF
ON
OFF
ON
OFF