Suzuki Swift - Page 251

Applying Vacuum Displayed Value on Scan Tool
0
Barometric pressure
(Approx. 100 kPa, 760 mmHg)
27 kPa
200 mmHg
Barometric pressure –27 kPa
(Approx. 73 kPa, 560 mmHg
67 kPa
500 mmHg
Barometric pressure –67 kPa
(Approx. 33 kPa, 260 mmHg)
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-95
Fig. 2 for Step 2
STEP ACTION YES NO
2 Check MAP Sensor
1) Remove MAP sensor from intake manifold and connect
vacuum pump gauge to MAP sensor. See Fig. 2.
2) Connect scan tool to DLC and turn ignition switch ON.
3) Check intake manifold absolute pressure displayed on
scan tool under following conditions.
Is check result satisfactory?
Check air intake
system for air
being drawn in
and engine
compression.
If OK, then
substitute a
known-good ECM
(PCM) and
recheck.
Replace MAP
sensor.