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SEC058D
Component Description
NFEC1400
The VIAS control solenoid valve cuts the intake manifold vacuum
signal for power valve control. It responds to ON/OFF signals from
the ECM. When the solenoid is off, the vacuum signal from the
intake manifold is cut. When the ECM sends an ON signal the coil
pulls the plunger downward and feeds the vacuum signal to the
power valve actuator.
CONSULT-II Reference Value in Data Monitor
Mode
NFEC1404
MONITOR ITEM CONDITION SPECIFICATION
VIAS S/V I Engine: After warning up
1,800 - 3,600 rpm ON
Except above condition OFF
On Board Diagnosis Logic
NFEC1472
DTC No. Trouble diagnosis name DTC Detecting Condition Possible Cause
P1800
1800
VIAS control solenoid valve circuit
open
An improper voltage signal is sent to
ECM through VIAS control solenoid
valve.
I Harness connectors
(The solenoid valve circuit is open
or shorted.)
I VIAS control solenoid valve
DTC Confirmation Procedure
NFEC1473
NOTE:
If “DTC” Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm battery
voltage is more than 11V at idle.
SEF058Y
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it for 10 seconds.
4. If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-676.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1800 VIAS CONTROL SOLENOID VALVE
Component Description
EC-673
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