Dtc "C23" (P1651-H/L): To Sensor Circuit Malfunction - Suzuki GSX-R750 Service Manual

DTC "C23" (P1651-H/L): TO Sensor Circuit Malfunction

Detected Condition and Possible Cause
Detected Condition
The sensor voltage should be the
following for 2 sec. and more, after ignition
C23
switch is turned ON.
0.2 V ≤ Sensor voltage < 4.8 V
Sensor voltage is higher than specified
H
value.
P1651
Sensor voltage is lower than specified
L
value.
Wiring Diagram
TO sensor
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-15)".
ECM coupler (Harness side)
1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32 33 34 35 36
Engine General Information and Diagnosis:
Possible Cause
• TO sensor circuit open or short.
• TO sensor malfunction.
• ECM malfunction.
• TO sensor circuit is open or ground circuit open.
• TO sensor circuit is open or shorted to ground or VCC
circuit open.
R
B
B/Br
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-71
B838H21104017
ECM
7 VCC
31 TOS
35 E2
I837H1110047-01
I837H1110007-02