Dtc "C23" (P1651-H/L): To Sensor Circuit Malfunction - Suzuki VLR1800 Service Manual

1A-57 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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23 18 18
ECM coupler (Harness side)
24 25 26 27 28 29 30 31 32 33 34
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
35 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
52 52 52 53 54 55 56 57 58 59 60 61 62 63
B822H11104016
ECM
11 VCC
22 TOS
29 E2
I823H1110104-02
64 65 66 67 68 68 68
I822H1110010-01