Resonance Flap - SSANGYONG Y200 Manual

1F1-66 M162 ENGINE CONTROLS
Failure
Description
Code
Resonance flap short
circuit to battery
198
Resonance flap short
circuit to ground or
open
199
Circuit Description
A pneumatically actuated resonance flap is located on the intake manifold, and will be opened and closed by
load, which operates resonance flap according to engine and controlled by ECM and rpm.
Resonance flap is closed at idle/partial load (less than 3,800/rpm). The switch valve will be adjusted by ECM and
resonance flap will be closed. By increasing air flow passage through dividing intake air flow toward both air
collection housing. This leads to a significant increase in the torque in the lower speed range.
Resonance flap is open at full load (over 3,800/rpm). The switch valve will not be adjusted by ECM and resonance
flap will be open. The collected air in the air collection housing will not be divided and intake air passage will be
shorten.

RESONANCE FLAP

Trouble Area
Resonance flap short circuit to
power
Resonance flap short circuit to
ground or open
Maintenance Hint
•
Monitoring the actual operational status
and vehicle speed signal through scan
tool
•
Inspection the Engine Control Module
(ECM) pin 97 about short circuit or open
with bad contact
•
Inspection the power source short circuit
or open to resonance flap
•
Inspection the resonance flap solenoid
and hardware
•
Inspection the ECM
YAD1F150
SSANGYONG Y200