Doosan D55C-5 Service Manual

D439E Service Manual 4. Fuel system
197
Injector Replacement
1. Remove the Injector according to the removal
procedure.
2. Install new Injector.
3. Before connecting wiring connector to Injector
after Installing Injector record the OR
compensation value on the top of the Injector
connector.
4. Input the OR compensation value into ECU after
connecting Injector connector and turning the key
on And then Input the previously recorded
compensation value In the order of the cylinders.
CAUTION
When replacing injector, the QR compensation
value of injector must be inputted. If
compensation value marked is not inputted into
ECU, the engine performance can be
deteriorated and there may have problems in the
emission gas.
If the Input of OR compensation value is missing or
incorrect, check engine warning lamp may turn on or
engine power may decrease.
1) If Input is not performed DTC P0602
2) If Input is incorrect : DTC P0611
3) If OR value is invalid : DTC P0612
ECU Replacement
1. Key must be turned off before replacing ECU
Otherwise. ECU may be Inoperative or have
troubles.
2. When replacing ECU, ECU data of the
corresponding vehicle must be inputted using a
Hi-scan. Refer to the Instruction on the Hi-scan for
the detailed procedure.
3. When replacing ECU, QR compensation value of
the currently installed injector should be inputted
using a Hi-scan.
4. When Inputting Injector QR compensation value
key must be turned on.
5. As for the Input of the Injector QR compensation
value, refer to the instruction of Hi-scan.
6. When the Input of injector QR compensation
value is completed turn the Ignition key off and
turn it on again after hearing relay clicking sound
(about 10 seconds later).
7. Perform [pump learning Initialization] in the
‘actuator test Items’.
CAUTION
When replacing injector or ECU, the QR
compensation value of injector must be inputted.
If compensation value is not inputted into ECU,
the engine performance could be deteriorated
and there may have problems in the emission
gas.
If the Input of QR compensation value is missing or
incorrect check engine warning lamp may turn on or
engine power may decrease.
1) If Input is not made DTC P0602
2) If Input is Incorrect DTC P0602

Doosan D55C-5 Specifications

General

Brand	Doosan
Model	D55C-5
Category	Engine
Language	English