C46" (P1657-H/L Or P1658) Excv Actuator Circuit Malfunction - Suzuki VZR1800 2007 Service Manual

"C46" (P1657-H/L or P1658) EXCV ACTUATOR CIRCUIT MALFUNCTION

DETECTED CONDITION
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)
P1657 Sensor voltage is higher than specified
H
value.
Sensor voltage is lower than specified
L
value.
P1658 The operation signal does not reach the
EXCVA motor.
ECM does not receive communication
signal from the STVA motor.
EXCVA
INSPECTION
Step 1 (When indicating C46:)
1) Turn the ignition switch OFF.
2) Remove the lower frame cover. (#7-8)
3) Check the EXCVA lead wire coupler for loose or poor con-
tacts.
4) Turn the ignition switch ON.
5) Check the operation of the EXCVA.
(EXCVA operating order: Full close → Full open → 30% open)
NOTE:
Install the EXCVA rubber cover correctly after checking the
EXCVA.
Is the operation OK?
YES Go to Step 2.
NO Go to Step 6.
Gr
P
B
Y
W
POSSIBLE CAUSE
• 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
B/R
R/B
R
Y
B/Br
1
1
FI SYSTEM DIAGNOSIS 5-83
ECM
MO
MO
VCC
MPS
E2