4-64 FI SYSTEM DIAGNOSIS
ACTIVE CONTROL INSPECTION (ISC RPM CONTROL)
Check 1
1) Set up the SDS tools. (
4-24 and refer to the SDS opera-
tion manual for further details.)
2) Check that the engine is running.
3) Click the “Active control”.
4) Click the “ISC rpm control”
1
.
5) Check that the “Command value”
2
is idle speed 1 400 ± 100
rpm.
6) Check that the “Desired idle rpm”
3
is within the specified
idle rpm.
Check 2
1) Click the button
4
and decrease the “Command value”
2
to
1 300 rpm slowly.
2) Check that the “Desired idle rpm”
3
is nearly equal to the
“Command value”
2
. At the same time, check that the num-
ber of steps
5
in the ISC valve position decreases.
3) Click the button
6
and increase the “Command value”
2
slowly.
4) Check that the “Desired idle rpm”
3
is nearly equal to the
“Command value”
2
. Also, check that the number of steps
5
in the ISC valve position increases.
