Suzuki Intruder VZR1800 Service Manual page 225

DETECTED
DTC No.
ITEM
Exhaust con-
trol valve
actuator
C46
P1657
H
P1657
L
P1658
C49/C61 PAIR control
solenoid
P1768/P1656
valve
C60 Cooling fan
P0480 relay
DETECTED FAILURE CONDITION
EXCVA position sensor produces fol-
lowing voltage.
0.1 V sensor voltage < 4.9 V
In other than the above range, C46
(P1657) is indicated.
When no actuator control signal is
supplied from the ECM, communica-
tion signal does not reach ECM or
operation voltage does not reach
EXCVA motor, C46 (P1658) is indi-
cated. EXCVA can not operate.
EXCVA position sensor voltage is
higher than specified value.
EXCVA position sensor voltage is
lower than specified value.
When no actuator control signal is
supplied from the ECM, communica-
tion signal does not reach ECM or
operation voltage does not reach
EXCVA motor, C46 (P1658) is indi-
cated. EXCVA motor can not operate.
PAIR control solenoid valve voltage is
not input to ECM.
Cooling fan relay signal is not input to
ECM.
FI SYSTEM DIAGNOSIS
CHECK FOR
EXCVA, EXCVA lead wire/cou-
pler
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, EXCVA motor lead
wire/coupler
PAIR control solenoid valve, lead
wire/coupler
Cooling fan relay, lead wire/cou-
pler connection
5-31