Dtc "C24" (P0351), "C25" (P0352), "C26" (P0353) Or "C27" (P0354): Ignition System Malfunction; Dtc "C28" (P1655): Secondary Throttle Valve Actuator (Stva) Malfunction - Suzuki GSX-R1000 Service Manual

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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-5) 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. STVA can not operate properly or its motor locked.
Wiring Diagram
STVA
B
P
G
W/B
13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32 33 34 35 36
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-14).
email: info@motomatrix.co.uk / www.motomatrix.co.uk
B/Lg
P/W
W/B
ECM coupler (Harness side)
1 2 3 4 5 6 7 8 9 10 11 12
Engine General Information and Diagnosis:
• STVA malfunction.
• STVA circuit open or short.
• STVA motor malfunction.
G
37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70 71 72
Possible Cause
ECM
28 STVA. 1B
4 STVA. 1A
27 STVA. 2B
3
STVA. 2A
1A-75
B947H11104018
B947H11104019
I947H1110039-01
I837H1110007-02