Suzuki Boulevard M50, Service Manual

Page: 212 / 454

FI SYSTEM 5-55
Step 2
1) Connect the TO sensor coupler.
2) Insert the needle pointed probes to the lead wire coupler.
3) Turn the ignition switch ON.
4) Measure the voltage at the wire side coupler between Br/W
1
and B/Br
2
wires.
Also, measure the voltage when leaning the motorcycle.

TO sensor voltage (Normal): 0.4 – 1.4 V
(
+
Br/W –
-
B/Br)
5) Dismount the TO sensor from its bracket and measure the
voltage when it is leaned 65° and more, left and right, from the
horizontal level.

TO sensor voltage (Leaning): 3.7 – 4.4 V
(
+
Br/W –
-
B/Br)

09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set

Tester knob indication: Voltage (

)
Is the voltage OK?
6) After repairing the trouble, clear the DTC using SDS tool.
(

5-25)
“C24” (P0351) or “C25” (P0352) IGNITION SYSTEM MALFUNCTION
(When indicating C24/P0351 for IG coil #1)
(When indicating C25/P0352 for IG coil #2)
* Refer to the IGNITION SYSTEM for details. (

9-20)
2
V
2
V
65˚
YES
• Red, Br/W or B/Br wire open or shorted to
ground, or poor
6
,
D
or
J
connection
• If wire and connection are OK, intermittent trou-
ble 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.
NO
• Loose or poor contacts on the ECM coupler
• Open or short circuit
• Replace the TO sensor with a new one.
ECM coupler (Harness side)
2
SA
MP
LE