Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
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35.
DTC P0045 Supercharger actuator control wire is open.
P0046
ECU internal drive module of supercharger actuator control wire is
overheated.
P0047 Supercharger actuator control wire is short to ground.
P0048 Supercharger actuator control wire is short to high level.
ECU is the control center fro supercharger actuator control system. ECU calculates corresponding supercharger
actuator response according to engine operation condition. ECU realizes actuator positioning via providing
supercharger actuator control motor with pulse width modulation voltage.
Diagnosis Hint: Check for connection and disconnection faults or seizures due to temperature. Under extremely hot
or cold condition, existed contaminations or freeze may lead to unsmooth component movement.
If it is an intermittent fault, the possible causes may be poor contact, worn wire insulating layer or damaged wire in
insulating layer.
Check for the following conditions:
z Poor contact of ECU or exhaust brake valve —Check harness connectors.
– Terminal looseness
– Poor fit of matching parts
–Locking plate fracture
–Terminal deformation or damage
–Poor contact between terminal and wire
z Harness damage—Check harness for damage.
Control signal
Booster actuator
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