ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-29
Ambient temp.
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 (PCM) and
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:
D With the generic scan tool, only star (l) marked data in the table below can be read.
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 VEHICLE CONDITION
NORMAL CONDITION/
REFERENCE VALUES
l
FUEL SYSTEM B1 (FUEL
SYSTEM STATUS)
At specified idle speed after warming up CLOSED (closed loop)
l
CALC LOAD
(CALCULATED LOAD
At specified idle speed with no load after
warming up
3 – 5%
VALUE)
At 2500 r/ min with no load after warming up 10 – 18%
l
COOLANT TEMP.
(ENGINE COOLANT
TEMP.)
At specified idle speed after warming up 85 – 95_C, 185 – 203_F
l
SHORT FT BI (SHORT
TERM FUEL TRIM)
At specified idle speed after warming up –20 – +20%
l
LONG FT BI (LONG
TERM FUEL TRIM)
At specified idle speed after warming up –15 – +15%
l
MAP (INTAKE
MANIFOLD ABSOLUTE
PRESSURE)
At specified idle speed with no load after
warming up
29 – 48 kPa,
220 – 360 mmHg
l
ENGINE SPEED At idling with no load after warming up
Desired idle speed
± 50 r/ min
l
VEHICLE SPEED At stop 0 km/ h, 0 MPH
l
IGNITION ADVANCE
(IGNITION TIMING
ADVANCE FOR NO.1
CYLINDER)
At specified idle speed with no load after
warming up
–1 – 18_ BTDC
l
INTAKE AIR TEMP. At specified idle speed after warming up
+35_C (+63_F)
–5_C (–9_F)
l
MAF (MASS AIR FLOW
engine stopped
Throttle valve fully open 70 – 90%
l
O2S B1 S1 (HEATED
OXYGEN SENSOR-1)
At specified idle speed after warming up 0.05 – 0.95 V
l
O2S B1 S2 (HEATED
OXYGEN SENSOR-2)
When engine is running at 2000 r/ min. for
3 min. or longer after warming up.
0 – 0.95 V
l
O2S FT B1 S1 At specified idle speed after warning up –20 – +20%
l
DIS. WITH MIL ON —— ——
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