Dtc "C91" (P0500): Vehicle Speed Sensor Circuit Malfunction - Suzuki GSX-R1000 Service Manual

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DTC "C91" (P0500): Vehicle Speed Sensor Circuit Malfunction

Detected Condition and Possible Cause
Detected Condition
Speedometer does not receive signal from the vehicle
speed sensor for more than 6 sec. when the motorcycle is
running. ECM does not receive signal from the vehicle
speed sensor for more than 6 sec. when the motorcycle is
running. Failure in communication between ECM and
speedometer with reference to vehicle speed.
Wiring Diagram
Speed sensor
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/R
B
B/W
ECM coupler (Harness side)
1 2 3 4 5 6 7 8 9 10 11 12
Engine General Information and Diagnosis:
Possible Cause
• Speed sensor circuit open or short.
• Speed sensor malfunction.
• Speedometer malfunction.
• ECM malfunction.
To Speedometer
B/R
P
B/W
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
1A-131
B947H11104033
ECM
2 Speed sensor
I837H1110116-01
I837H1110007-02