Scan Tool Data - Suzuki 2000 Grand Vitara SQ625 Service Manual

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 condition,
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 Com-
mands 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:
D For asterisk (:) marked item in OTHER column, item can be read only SUZUKI scan tool.
D 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.
D Star (l) marked data in the table below can not be read for vehicle with monitor connector.
SCAN TOOL DATA
COOLANT TEMP.
(Engine Coolant Temp.) (E i C l T )
INTAKE AIR TEMP.
DESIRE IDLE
(Desired Idle Speed)
CLOSED THROT POS
(Closed Throttle Position) (Cl d Th ttl P iti
IAC FLOW DUTY
ENGINE SPEED
SHORT FT B1
(Short Term Fuel Trim)
LONG FT B1
(Long Term Fuel Trim)
IGNITION ADVANCE
BATTERY VOLTAGE
MAF (Mass Air Flow Rate)
INJ PULSE WIDTH
(F (Fuel Injection Pulse Width) l I j ti P l Width)
THROTTLE POS
(Absolute Throttle Position) (Ab l Th l P i i
TP SENSOR VOLT
(TP S (TP Sensor Output Voltage) O V l
CONDITION
At specified idle speed after warming up
At specified idle speed after warming up
At idling with no load after warming up
Accelerator pedal released
Ignition Ignition
)
switch ON
Accelerator pedal depressed
At specified idle speed after warming up
At idling with no load after warming up
At specified idle speed after warming up
At specified idle speed after warming up
At specified idle speed with no load after
warming up i
Ignition switch ON/engine stopped
At specified idle speed with no load after warming up.
At 2500 r/min. with no load after warming up.
At specified idle speed with no load after warming up.
At 2500 r/min. with no load after warming up.
Ignition switch ON/
) warmed up engine d i
stopped.
Ignition switch ON/
) warmed up engine d i
stopped.
Accelerator pedal released
Accelerator pedal depressed
fully
Accelerator pedal released
Accelerator pedal depressed
fully
ENGINE DIAGNOSIS (G16 / J20 ENGINES) 6-21
NORMAL CONDITION/
REFERENCE VALUE
G16 80 – 105_C (176 – 221_F)
J20 70 – 100_C (158 – 212_F)
Environmental +35_C
temp. –5_C
750 rpm
ON
OFF
2 – 30 %
Desired idle speed
" 50 rpm
–20 – +20 %
– 15 – +15 %
G16 6 – 10_
J20 12 – 16_
10 – 14 V
1.1 – 2.9 g / s
G16
0.14 – 0.38 lb / min.
1.5 – 4.0 g / s
J20
0.20 – 0.53 lb / min.
5.0 – 9.0 g / s
G16
0.66 – 1.12 lb / min.
5.0 – 10.0 g / s
J20
0.66 – 1.32 lb / min.
1.3 – 5.0 msec
1.3 – 5.0 msec
0 %
95 – 100 %
0.2 – 0.6 V
3.5 – 4.5 V
OTHER
+63_F
–9_F
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