Engine control unit
Engine control unit
Note. On vehicles from model year 04 with ESP, each time the battery is disconnected, the steering angle sensor loses its basic setting. You need to recalibrate it.
Removing
Open the hood.
Disconnect the battery terminals.
Disconnect the ground wire.
Dismantle the suction pipe 4.
Loosen 2 nuts.
Disconnect the crankcase ventilation hose from the cylinder head cover 5.
On the Z10XEP engine, remove the air intake hose.
Release clamp.
Disconnect the 2 harness connectors - hot film mass air flow meter 2, tank vent valve 1.
Remove hot film mass air flow meter 3.
Loosen 2 clamps.
Disconnect the crankcase ventilation hose 1 from the cylinder head cover.
Disconnect the 4 engine control harness connectors.
Disconnect the throttle valve module 2, fuel injectors 3.
On the Z 10 XEP engine: remove the fuel distributor pipe cover.
Loosen 2 mounting screws.
Note. Observe the safety regulations and laws in force in your country.
Reduce the fuel pressure using the KM-J-34730-91 pressure gauge.
Unscrew the protective cap of the control fitting 2 on the fuel distributor tube 1.
Note. The control fitting on the Z 10 XEP engine is located on the top of the fuel distributor pipe.
Remove fuel line 2 using tool KM-796-A.
Release the fuel line.
Close with tool KM-807.
Remove the throttle module.
Note. The cooling system must remain closed.
Loosen the 4 fixing screws 1.
Remove the fuel distributor pipe 3.
Loosen 2 mounting screws.
Remove 3 fuel injectors.
Remove the 3 retaining clips 2.
Replace 6 fuel injector O-rings 1.
Installation
Clean the sealing surfaces of the intake manifold and throttle module.
Install fuel injectors.
Insert fuel injectors.
Install the retaining clips.
Note. Observe the installation position. The groove in the locking bracket must engage with the lug of the fuel injector (arrow).
Install the fuel distributor pipe.
Tighten 2 mounting bolts to 6 Nm.
Install the throttle module.
Replace seal.
Tighten 4 mounting bolts to 7 Nm.
Install the fuel line.
Remove tool KM-807.
Install the fuel line.
Note. The connection should click into place.
Fasten the fuel line.
Connect the 4 engine management harness connectors.
On the Z 10 XEP engine: install the fuel distributor pipe shroud.
Tighten the 2 mounting bolts.
Install the crankcase ventilation hose.
Fasten the clamp.
Install the suction pipe.
Install a hot film mass air flow meter.
Fasten 2 clamps.
Connect 2 harness connectors, hot film mass air flow meter, tank vent valve.
On the Z 10 XEP engine: Install the air intake hose.
Tighten the clamp to 3.5 Nm.
Install the crankcase ventilation hose.
Tighten 2 fastening nuts to 8 Nm.
Connect the battery terminals.
Calibrate the steering angle sensor.
Turn on the ignition.
Turn the steering wheel once from the right end position to the left end position.
Program the volatile memory.
Close the hood.
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