C46" (P1657-H/L Or P1658) Excv Actuator Circuit Malfunction - Suzuki GSX-R1000 2007 Service Manual

4-92 FI SYSTEM DIAGNOSIS

"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
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.
INSPECTION
Step 1 (When indicating C46:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. ( 5-3)
3) Check the EXCVA position sensor coupler
motor coupler for loose or poor contacts.
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
and EXCVA
ECM
MO
MO
VCC
MPS
E2