Suzuki Liana RH418, Supplementary Service Manual

Page: 32 / 371

1A-19 Engine General Information and Diagnosis:
Scan Tool Data
S3RH0B1104007
As the data values 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 that can be checked by the scan tool are those detected by ECM and output from ECM 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
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 Vehicle condition
Normal condition /
reference values
)
FUEL SYSTEM B1 (FUEL
SYSTEM STATUS) At specified idle speed after warming up CLOSED (closed loop)
)
CALC LOAD (CALCULATED
LOAD VALUE)
At specified idle speed with no load after warming up 3 – 9%
At 2500 r/min. with no load after warming up 12 – 17%
)
COOLANT TEMP. (ENGINE
COOLANT TEMP.) At specified idle speed after warming up 80 – 100
°
C, 176 – 212
°
F
)
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%
)
MAP (INTAKE MANIFOLD
ABSOLUTE PRESSURE) At specified idle speed with no load after warming up 24 – 37 kPa, 180 – 280 mmHg
)
ENGINE SPEED
At idling with no load after warming up Desired idle speed
±
50 r/min.
)
VEHICLE SPEED
At stop 0 km/h, 0 MPH
)
IGNITION ADVANCE
(IGNITION TIMING
ADVANCE FOR NO.1
CYLINDER)
At specified idle speed with no load after warming up 3 – 13
°
BTDC
)
INTAKE AIR TEMP.
At specified idle speed after warming up
Ambient temp.: +30
°
C (86
°
F)
–5
°
C (23
°
F)
)
MAF
(MASS AIR FLOW RATE)
At specified idle speed with no load after warming up 1 – 4 g/s
At 2500 r/min. with no load after warming up 4 – 9 g/s
)
THROTTLE POSITION
(ABSOLUTE THROTTLE
POSITION) Ignition switch ON /
engine stopped
Throttle valve fully closed 7 – 18%
Throttle valve fully open 70 – 90%
)
O2S B1 S1 (HEATED
OXYGEN SENSOR-1) At specified idle speed after warming up 0 – 0.95 V
)
DESIRED IDLE (DESIRED
IDLE SPEED)
At idling with radiator cooling fan stopped and all
electrical parts turned OFF after warming up, M/T at
neutral, A/T at “P” range
M/T: 660 r/min.
A/T: 700 r/min.