Suzuki Boulevard M50, Service Manual

Page: 198 / 454

FI SYSTEM 5-41
Step 3
1) Connect the TP sensor coupler.
2) Insert the needle pointed probes to the lead wire coupler.
3) Turn the ignition switch ON.
4) Measure the TP sensor output voltage at the coupler
(between Bl/B wire
A
and B/Br wire
B
) by turning the throttle
grip.

TP sensor output voltage
Throttle valve is closed: Approx. 1.1 V
Throttle valve is opened: Approx. 4.4 V

09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set

Tester knob indication: Voltage (

)
Is the voltage OK?
5) After repairing the trouble, clear the DTC using SDS tool.
(

5-25)
V
3
YES
• R, B/Br or BI/B wire open or shorted to ground,
or poor
6
,
D
or
K
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
If check result is not satisfactory, replace TP sen-
sor with a new one.
ECM coupler (Harness side)
3
SA
MP
LE