Suzuki Engine 2002 GRAND VITARA SQ625, Руководство по обслуживанию

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6-26 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES)
Scan Tool Data
As the data values given below are standard values estimated on the basis of values obtained from the normally
operating vehicles by using a scan tool, use them as reference values. Even when the vehicle is in good condi-
tion, there may be cases where the checked value does not fall within each specified data range. Therefore,
judgment as abnormal should not be made by checking with these data alone.
Also, conditions in the below table that can be checked by the scan tool are those output from ECM (PCM) as
Commands and there may be cases where the engine or actuator is not operating (in the condition) as indicated
by the scan tool. Be sure to use the timing light to check the ignition timing.
NOTE:
• For asterisk (
✱
) marked item in OTHER column, item can be read only SUZUKI scan tool.
• When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the
neutral gear position and A/T gear to the “Park” position and pull the parking brake fully. Also, if
nothing or “no load” is indicated, turn OFF A/C, all electric loads, P/S and all the other necessary
switches.
SCAN TOOL DATA CONDITION
NORMAL CONDITION/
REFERENCE VALUE
OTHER
COOLANT TEMP.
(Engine Coolant Temp.) At specified idle speed after warming up G16 80 – 105°C
(176 – 221°F)
J20 70 – 100°C
(158 – 212°F)
INTAKE AIR TEMP. At specified idle speed after warming up Environmental temp.
+35°C –5°C (+63°F –9°F)
DESIRE IDLE
(Desired Idle Speed) At idling with no load after warming up 750 rpm
✱
CLOSED THROT POS
(Closed Throttle Position) Ignition switch
ON Accelerator pedal
released ON
✱
Accelerator pedal
depressed OFF
IAC FLOW DUTY At specified idle speed after warming up 5 – 30%
✱
ENGINE SPEED At idling with no load after warming up Desired idle speed
± 50 rpm
SHORT FT B1
(Short Term Fuel Trim) At specified idle speed after warming up –20 – +20%
LONG FT B1
(Long Term Fuel Trim) At specified idle speed after warming up –15 – +15%
IGNITION ADVANCE At specified idle speed with no load after
warming up G16 6 – 10°
J20 12 – 16°
BATTERY VOLTAGE Ignition switch ON/engine stopped 10 – 14 V
✱
MAF (Mass Air Flow Rate) At specified idle speed with no load after
warming up. G16 1.1 – 2.9 g/s
0.14 – 0.38 lb/min.
J20 1.5 – 4.0 g/s
0.20 – 0.53 lb/min.
At 2500 r/min. with no load after warming
up. G16 5.0 – 9.0 g/s
0.66 – 1.12 lb/min.
J20 6.0 – 11.0 g/s
0.66 – 1.32 lb/min.