Suzuki WagonR+ RB310 Service Manual page 2389

6-30 ENGINE DIAGNOSIS
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 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:
D With the generic scan tool, only star (l) marked data in the table below can be read.
D The triangle (∆) marked data in the table below can not be read for vehicle without EGR valve.
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.
SCAN TOOL DATA
FUEL SYSTEM B1 (FUEL
l
SYSTEM STATUS)
CALC LOAD
( (CALCULATED LOAD
l
VALUE)
COOLANT TEMP.
(ENGINE COOLANT
l
TEMP.)
SHORT FT BI (SHORT
l
TERM FUEL TRIM)
LONG FT BI (LONG
l
TERM FUEL TRIM)
MAP (INTAKE
MANIFOLD ABSOLUTE
l
PRESSURE)
l ENGINE SPEED
l VEHICLE SPEED
IGNITION ADVANCE
(IGNITION TIMING
l
ADVANCE FOR NO.1
CYLINDER)
l INTAKE AIR TEMP.
l MAF (MASS AIR FLOW
RATE) RATE)
THROTTLE POS
l (ABSOLUTE (ABSOLUTE
l
THROTTLE POSITION)
O2S B1 S1 (HEATED
l
OXYGEN SENSOR-1)
O2S B1 S2 (HEATED
∆ l
OXYGEN SENSOR-2)
∆ l O2S FT B1 S1
∆ l DIS. WITH MIL ON
VEHICLE CONDITION
At specified idle speed after warming up
At specified idle speed with no load after
warming up
At 2500 r / min with no load after warming up
At specified idle speed 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
At idling with no load after warming up
At stop
At specified idle speed with no load after
warming up
At specified idle speed 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
Throttle valve fully closed
ON/ engine ON/ engine
Throttle valve fully open
stopped
At specified idle speed after warming up
When engine is running at 2000 r / min. for
3 min or longer after warming up.
At specified idle speed after warming up
——
NORMAL CONDITION /
REFERENCE VALUES
CLOSED (closed loop)
3 – 9%
12 – 17%
85 – 100_C, 185 – 212_F
– 20 – +20%
– 15 – +15%
24 – 37 kPa,
180 – 280 mmHg
Desired idle speed
± 50 r / min
0 km / h, 0 MPH
3 – 11_ BTDC
+15_C (59_F)
Ambient temp.
– 5_C (23_F)
1 – 4 gm / sec
4 – 9 gm / sec
7 – 18%
70 – 90%
0.05 – 0.95 V
0 – 0.95 V
– 20 – +20%
——