Suzuki RMX450Z Service Manual page 135

C41 (Use of FI indicator light)
Step
1 1) Turn off the ignition switch.
2) Remove the left frame cover. Refer to "Exterior Parts
Removal and Installation" in Section 9D (Page 9D-1).
3) Check the ECM coupler (1) for loose or poor contacts.
If OK, then measure the FP relay input voltage.
4) Disconnect the ECM coupler.
5) Insert the needle-point probe to ECM coupler.
6) Measure the voltage between terminal "14" and ground.
Special tool
(A): 09900–25008 (Multi circuit tester set)
(B): 09900–25009 (Needle-point probe set)
Tester knob indication
Voltage ( )
FP relay input voltage
Battery voltage
"14"
Is the voltage OK?
Action
1
(A)
V
(B)
Engine General Information and Diagnosis:
Yes
• FP relay (ECM)
malfunction.
• O/G or R/B wire open
or shorted, or poor
terminal "14" or "15"
connection.
• If the 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
IA02J1110070-02
with a known good
one, and inspect it
again.
I933H1110070-05
1A-66
No
Open or short circuit in
the O/G wire.