Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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6-1-32 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE)
THROTTLE POS (ABSOLUTE THROTTLE POSITION, %)
When throttle position sensor is fully closed position, throttle opening is indicated as 0% and 100% for full open
position.
TP SENSOR VOLT (TP SENSOR OUTPUT VOLTAGE, V)
Throttle Position Sensor reading provides throttle valve opening information in the from of voltage.
OXYGEN SENSOR B1 S1 (HO2S BANK 1 SENSOR 1 OUTPUT VOLTAGE, V)
OXYGEN SENSOR B2 S1 (HO2S BANK 2 SENSOR 1 OUTPUT VOLTAGE, V)
It indicates output voltage of HO2S SENSOR 1 installed on exhaust manifold (pre-catalyst).
OXYGEN SENSOR B1 S2 (HO2S BANK 1 SENSOR 2 OUTPUT VOLTAGE, V)
OXYGEN SENSOR B1 S2 (HO2S BANK 2 SENSOR 2 OUTPUT VOLTAGE, V)
It indicates output voltage of HO2S SENSOR 2 installed on exhaust pipe (post-catalyst). It is used to detect cat-
alyst deterioration.
FUEL SYSTEM B1 (FUEL SYSTEM BANK 1 STATUS)
FUEL SYSTEM B2 (FUEL SYSTEM BANK 2 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.
CLOSED-ONE O2S : Closed loop, but fault with at least one oxygen sensor-may be using single oxygen sensor
for fuel control.
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%.
TOTAL FUEL TRIM (%)
The value of total fuel trim is obtained by putting values of short term fuel trim and long term fuel trim together.
This value indicates how much correction is necessary to keep the air/fuel mixture stoichiometrical.
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.
VEHICLE SPEED (km/h, MPH)
It is computed based on pulse signals from vehicle speed sensor in combination meter.
FUEL CUT (ON/OFF)
ON : Fuel being cut. (output signal to injector is stopped.)
OFF : Fuel not being cut.
MAP (MANIFOLD ABSOLUTE PRESSURE, mmHg, kPa)
This parameter indicates the pressure in the intake manifold absolute pressure.