Dtc "C24" (P0351), "C25" (P0352): Ignition System Malfunction; Dtc "C28" (P1655): Secondary Throttle Valve Actuator (Stva) Malfunction - Suzuki Intruder VZ1500 Service Manual

DTC "C24" (P0351), "C25" (P0352): Ignition System Malfunction

NOTE
• Refer to "No Spark or Poor Spark in Section 1H (Page 1H-3)" for details.
• When indicating "C24" (P0351) for #1
• When indicating "C25" (P0352) for #2

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. STVA can not operate properly.
Wiring Diagram
STVA
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 terminal damage.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to "Use of SDS Diagnosis Reset
Procedures (Page 1A-13)".
B/Lg
P/W
G
W/B
ECM coupler (Harness side)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Engine General Information and Diagnosis:
Possible Cause
• STVA malfunction.
• STVA circuit open or short.
• STVA motor malfunction.
16 17 35 36 37 38 39
33 34
44 45 46 47 48
ECM
35 STVA. 1B
37 STVA. 1A
44 STVA. 2B
46
STVA. 2A
40 41 42 43
49 50 51 52
1A-58
B940H21104016
B940H21104017
I940H1110047-01
I940H1110012-03