Dtc "C23" (P1651-H/L): To Sensor Circuit Malfunction - Suzuki kq750 Service Manual

1A-53 Engine General Information and Diagnosis:

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 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)".
• TO sensor circuit open or short.
• TO sensor malfunction.
• ECM malfunction.
• TO sensor circuit open or shorted to VCC or ground
circuit open.
• TO sensor circuit shorted to ground or VCC circuit open.
R
Br/W
B/Br
ECM coupler (Harness side)
Possible Cause
ECM
6
VCC
TO
10
24
E2
I831G1110019-01
B831G21104016
I831G1110054-01