Suzuki Boulevard M50, Service Manual, Page: 224 / 454

FI SYSTEM 5-67
6) If OK, then check the continuity between each terminal and
ground.

STP sensor continuity:
∞ Ω
(Infinity)

09900-25008: Multi-circuit tester set

Tester knob indication: Resistance (
Ω
)
Are the resistance and continuity OK?
7) After repairing the trouble, clear the DTC using SDS tool.
(

5-25)
Step 2
1) Turn the ignition switch ON.
2) Measure the injector voltage between Y/R wire
A
and
ground.

Injector voltage: Battery voltage
(
+
Y/R
A
–
-
Ground)
NOTE:
Injector voltage can be detected only 3 seconds after ignition
switch is turned ON.

09900-25008: Multi-circuit tester set

Tester knob indication: Voltage (

)
Is the voltage OK?
3) After repairing the trouble, clear the DTC using SDS tool.
(

5-25)
YES Go to Step 2.
NO
Replace the injector with a new one.
(

6-22)
YES
• Gr/W wire open or shorted to ground, or poor
a
connection
(Front cylinder side)
• Gr/B wire open or shorted to ground, or poor
^
connection
(Rear cylinder side)
• 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 Open circuit in the Y/R wire
1
2
V
ECM coupler (Harness side)
2
SA
MP
LE