Suzuki AN400 Service Manual page 110

1A-47 Engine General Information and Diagnosis:
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)
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Continuity (
4) If OK, then measure the STVA resistance B wire and P
wire between and between G wire and W/B wire.
STVA continuity
Approx. 6.5 Ω (Terminal "B" – Ground "P") (Terminal
"G" – Ground "W/B")
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Is the resistance OK?
Action
)
(A)
(A)
B G
P W/B
Yes
• B/O, P/B, G/R or W/G
wire open or shorted
to ground, or poor
(13), (12), (16) and
(17) connection.
(Refer to "Terminal
Alignment of ECM
Coupler (Harness
Side) (Page1A-5)".)
• If 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
with a known good
one, and inspect it
again.
I705H1110119-07
I705H1110120-06
No
• Loose or poor
contacts on the ECM
coupler.
• Replace the STVA
with a new one.