1A-37 Engine General Information and Diagnosis:
Scan Tool Data
S5JB0A1104007
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
• With the generic scan tool, only star (*) marked data in the following table can be read.
• 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 (if equipped with A/C), all electric loads, P/S and all
the other necessary switches.
) P2122 Pedal position sensor (main) circuit low input • Throttle valve is fixed at the opening of about 7°
from its completely closed position (default
opening).
• ECM controls fuel cut at specified engine speed.
) P2123 Pedal position sensor (main) circuit high input
) P2127 Pedal position sensor (sub) circuit low input
) P2128 Pedal position sensor (sub) circuit high input
) P2135
Throttle position sensor (main) / (sub) voltage
correlation
• ECM turns off throttle actuator control relay and
throttle valve is fixed at the opening of about 7°
from its completely closed position (default
opening).
• ECM controls fuel cut at specified engine speed.
) P2138
Pedal position sensor (main) / (sub) voltage
correlation
• Throttle valve is fixed at the opening of about 7°
from its completely closed position (default
opening).
• ECM controls fuel cut at specified engine speed.
) P2227 Barometric pressure sensor performance problem
ECM controls actuators assuming that barometric
pressure is 101.33 kPa (762 mmHg).
DTC No. Detected item Fail-safe operation
Scan tool data Vehicle condition
Normal condition /
reference values
*
)COOLANT TEMP
(ENGINE COOLANT TEMP.)
At specified idle speed after warming up 80 – 100 °C, 176 – 212 °F
* )INTAKE AIR TEMP. At specified idle speed after warming up
–5 °C (23 °F) + environmental
temp. to 40 °C (104 °F) +
environmental temp.
* )ENGINE SPEED It idling with no load after warming up Desired idle speed ± 50 rpm
)DESIRED IDLE (DESIRED
IDLE SPEED)
It idling with radiator cooling fan stopped and all
electrical parts turned OFF after warming up, M/T at
neutral
650 rpm (for J20 engine), 660
rpm (for M16 engine)
*
)MAF (MASS AIR FLOW
RATE)
At specified idle speed with no load after warming
up
1.0 – 4.0 g/s 0.14 – 0.52 lb/
min.
At 2500 r/min. with no load after warming up
4.0 – 12.0 g/s 0.53 – 1.58 lb/
min.
*
)CALC LOAD
(CALCULATED LOAD
VALUE)
At specified idle speed with no load after warming
up
0 – 10%
At 2500 r/min. with no load after warming up 0 – 10%
*
)MAP (INTAKE MANIFOLD
ABSOLUTE PRESSURE)
At specified idle speed with no load after warming
up
24 – 38 kPa, 7.1 – 11.2 in.Hg
*
)THROTTLE POSITION
(ABSOLUTE THROTTLE
POSITION)
Ignition switch ON /
warmed up engine
stopped
Accelerator pedal released 0 – 5%
Accelerator pedal depressed
fully
90 – 100%
) BAROMETRIC PRES —
Barometric pressure is
displayed
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