Suzuki Boulevard M50, Service Manual

Page: 214 / 454

FI SYSTEM 5-57
Step 2
1) Turn the ignition switch OFF.
2) Disconnect the STVA lead wire coupler.
3) Check the continuity between each terminal and ground.

STVA continuity:
∞ Ω
(Infinity)
(Terminal – Ground)
4) If OK, then measure the STVA resistance (between Black
wire
A
and Pink wire
B
) and (between Green wire
C
and W/
Bl wire
D
).

STVA resistance: Approx. 6.5
Ω
(Black
A
– Pink
B
)
(Green
C
– W/Bl
D
)

09900-25008: Multi-circuit tester set

Tester knob indication: Resistance (
Ω
)
Is the resistance OK?
5) After repairing the trouble, clear the DTC using SDS tool.
(

5-25)
2
2
YES
• B/Lg, P/W, Green and Black wire open or
shorted to ground, or poor
Y
,
[
,
d
and
f
con-
nection
• 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
• Replace the STVA with a new one.
ECM coupler (Harness side)
2
SA
MP
LE