Suzuki Jimny Service Manual page 457

6-100 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Step
3 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 for specified value.
See Table 1.
Is check result satisfactory?
[A] Fig. 1 for Step 2 / [B] Fig. 2 for Step 3
Table 1
Applying Vacuum
0
027 kPa
200 mmHg
67 kPa
500 mmHg
Action
Displayed Value on Scan Tool
Barometric pressure
(Approx. 100 kPa, 760 mmHg)
Barometric pressure – 27 kPa
(Approx. 73 kPa, 560 mmHg)
Barometric pressure – 67 kPa
(Approx. 33 kPa, 260 mmHg)
Yes
Check air intake system
for air being drawn in and
engine compression.
If OK, then substitute a
known-good ECM and
recheck.
No
Replace MAP sensor.