Suzuki VZR1800 2007, Service Manual

Page: 273 / 609

5-72 FI SYSTEM DIAGNOSIS
Step 2
1) Turn the ignition switch OFF.
2) Disconnect the ISC valve coupler.
3) Check the continuity between terminals
1
and
3
, terminals
2
and
4
.
$
ISC valve continuity: Approx.
∞ Ω
(Infinity)
(Terminal
1
– Terminal
3
)
(Terminal
2
– Terminal
4
)
4) If OK, then measure the resistance between terminals
1
and
2
, terminals
3
and
4
.
$
ISC valve resistance: Approx. 30 ± 1.2
Ω
at 20 °C (68 °F)
(Terminal
1
– Terminal
2
)
(Terminal
3
– Terminal
4
)
Is the resistance OK?
5) After repairing the trouble, clear the DTC using SDS tool.
(
#
5-26)
YES If wire is OK, intermittent trouble or faulty ECM.
NO Replace the ISC valve with a new one.
2