Suzuki VLR1800, Service Manual

Page: 174 / 624

1A-105 Engine General Information and Diagnosis:
Active Control Inspection
1) Set up the SDS tool. (Refer to SDS operation manual for further details.)
2) Start the engine and run it in idling condition.
3) Click “Cooling fan relay control” (1).
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Remove the battery holder. Refer to “Battery / Battery
Holder Removal and Installation in Section 1J (Page 1J-
11)”.
3) Check the cooling fan relay (1) coupler for loose or poor
contacts.
If OK, then inspection the cooling fan relay. Refer to
“Cooling Fan Inspection in Section 1F (Page 1F-8)”.
Is the cooling fan relay OK?
• O/B and O/R wire
open or shorted to
ground, or poor “43”
connection.
• If wire and
connection are OK,
intermittent trouble or
faulty ECM.
• Recheck each
terminal and wire
harness for open
circuit and poor
connection.
• Replace the ECM
with a known good
one, and inspect it
again. Refer to “ECM
Removal and
Installation in Section
1C (Page 1C-1)”.
Replace the cooling fan
relay with a new one.
1
I822H1110129-01
1
I822H1110130-01