Dtc "C24" (P0351), "C25" (P0352), "C26" (P0353) Or "C27" (P0354): Ignition System Malfunction; Dtc "C28" (P1655): Secondary Throttle Valve Actuator (Stva) Malfunction - Suzuki GSF1250 Service Manual

1A-73 Engine General Information and Diagnosis:

DTC "C24" (P0351), "C25" (P0352), "C26" (P0353) or "C27" (P0354): Ignition System Malfunction

NOTE
Refer to "No Spark or Poor Spark in Section 1H (Page 1H-3)" for details.

DTC "C28" (P1655): Secondary Throttle Valve Actuator (STVA) Malfunction

Detected Condition and Possible Cause
Detected Condition
The operation voltage does not reach the STVA.
ECM does not receive communication signal from the
STVA.
Wiring Diagram
STVA
W/Bl
Troubleshooting
CAUTION
!
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with a
needle pointed tester probe to prevent the terminal damage or terminal bend.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to "Use of SDS Diagnosis Reset
Procedures (Page 1A-13)".
B
P
G
ECM coupler (Harness side)
Possible Cause
• STVA malfunction.
• STVA circuit open or short.
• STVA motor malfunction.
B/Lg
P/W
G
W/B
B718H11104017
B718H11104018
ECM
19
STVA. 1B
2 STVA. 1A
STVA. 2B
18
1 STVA. 2A
I718H1110077-04
I718H1110240-01