Suzuki VLR1800, Service Manual

Page: 160 / 624

1A-91 Engine General Information and Diagnosis:
DTC “C46” (P1657-H/L or P1658): EXCV Actuator Circuit Malfunction
B822H11104033
Wiring Diagram
ECM coupler (Harness side)
Detected Condition Possible Cause
C46
The operation signal does not reach the
EXCV actuator.
EXCVA position sensor voltage low or
high
0.1 V
≤
Sensor voltage < 4.9 V
(without the above range)
EXCVA can not operate properly.
• EXCVA maladjusted.
• EXCVA circuit open or short.
• EXCVA motor malfunction.
• EXCVA position sensor malfunction.
• EXCVA position sensor circuit shorted to VCC or ground
circuit open.
• EXCVA position sensor circuit open or shorted to ground
or VCC circuit open.
• EXCVA motor circuit open or short.
• EXCVA motor malfunction.
P1657
H
Sensor voltage is higher than specified
value.
L
Sensor voltage is lower than specified
value.
P1658
The operation signal does not reach the
EXCVA motor.
ECM does not receive communication
signal from the EXCVA motor.
EXCVA can not operate properly.
ECM
EXCVA
VCC
MPS
MO
MO
E2
B/R
R/B P
Gr
B/Br W
Y Y
R B
4
3
11
5
29
I822H1110103-03
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18 18 18 19 20 21 22 23 26 27 24 25 28 29 30 31 32 33 34
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
53 54 55 56 57 58 59 60 61 62 63 67 64 65 66 68 68 68 52 52 52
I822H1110010-01