REPLACING CONTROL UNIT (VALVETRONIC)
Switch off ignition.
Follow instructions for disconnecting and connecting battery.
Disconnect battery.
CAUTION: Follow instructions for removing and installing electronic control units.
Observe following instructions before replacing control unit:
PROGRAM CONTROL UNIT.
Remove right fresh air duct.
Release screw and remove holder (1).
Release screws and remove cover (2) from control unit box.
NOTE: Release screws on seal (3) only when removing wiring harness.
Fig. 21: Locating Holder And Cover
Installation:
Insert tabs (1) in openings (2) and close cover.
Fig. 22: Identifying Tabs And Cover
Unlock and detach plug connections on Valvetronic control unit (1).
Remove Valvetronic control unit (1).
Fig. 23: Identifying Valvetronic Control Unit
NOTE: Interrogate fault memory of DME control unit.
Check stored fault messages.
Rectify faults.
Then clear fault memory.
REPLACING PULSE GENERATOR ON LEFT EXHAUST CAMSHAFT (N62, N62TU)
(cylinder bank 5 to 8)
Necessary preliminary tasks:
Release plug connector (1) and pull off.
Fig. 24: Identifying Plug Connector
Release screw.
Remove pulse generator (2).
Installation:
Replace sealing ring and coat with antiseize agent.
Fig. 25: Identifying Pulse Generator
NOTE: Now clear the fault memory.
REPLACING PULSE GENERATOR ON RIGHT EXHAUST CAMSHAFT (N62, N62TU)
(cylinder bank 1 to 4)
Necessary preliminary tasks:
Release plug connector (1) and pull off.
Fig. 26: Identifying Plug Connector
Release screw.
Remove pulse generator (2).
Installation:
Replace sealing ring and coat with antiseize agent.
Fig. 27: Identifying Pulse Generator
NOTE: Now clear the fault memory.
REPLACING CRANKSHAFT PULSE GENERATOR (N62, N62TU)
Necessary preliminary tasks:
Installation location:
On transmission housing at bottom right.
Unlock plug (1) and remove.
Release screw.
Withdraw pulse generator (2) from transmission housing.
Installation:
Replace sealing ring.
Replace screw.
Fig. 28: Locating Pulse Generator
Installation:
Now clear the fault memory.
REPLACING PULSE GENERATOR ON LEFT INLET CAMSHAFT (N62, N62TU)
(cylinder bank 5 to 8)
Necessary preliminary tasks:
Release plug connector (1) and pull off.
Fig. 29: Identifying Plug Connector
Release screw.
Remove pulse generator (2).
Installation:
Replace sealing ring and coat with antiseize agent.
Fig. 30: Locating Pulse Generator
NOTE: Now clear the fault memory.
REPLACING PULSE GENERATOR ON RIGHT INLET CAMSHAFT (N62, N62TU)
(cylinder bank 1 to 4)
Necessary preliminary tasks:
Release plug connector (1) and pull off.
Fig. 31: Identifying Plug Connector
Release screw.
Remove pulse generator (2).
Installation:
Replace sealing ring and coat with antiseize agent.
Fig. 32: Locating Pulse Generator
NOTE: Now clear the fault memory.
REPLACING CONTROL UNIT (DME) (N62, N62TU)
Necessary preliminary tasks:
IMPORTANT: Follow instructions for removing and installing electronic control units.
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION).
Replacement:
Unlock stopper (1) in direction of arrow.
Unfasten screws.
Lift out cover (2).
Security version:
Remove DME ARMOUR PLATING
Fig. 33: Locating Screws And Stopper
Unlock and detach all plug connections on DME control unit (1).
Unlock DME control unit (1) and remove towards top.
Fig. 34: Identifying DME Control Unit
REPLACING RIGHT KNOCK SENSORS (N62, N62TU)
(cylinder bank 1 to 4)
Necessary preliminary tasks:
IMPORTANT: Mixing up the knock sensor plug connections will result in engine damage! Routing of wires and plug connections must conform to the original routing.
This eliminates the risk of confusion and mix-ups.
Release bolts.
Tightening torque 12 14 1AZ.
Remove knock sensors (1).
Fig. 35: Locating Knock Sensors
NOTE: Now clear the fault memory.
REPLACING LEFT KNOCK SENSORS (N62, N62TU)
(cylinder bank 5 to 8)
Necessary preliminary tasks:
IMPORTANT: Mixing up the knock sensor plug connections will result in engine damage! Routing of wires and plug connections must conform to the original routing.
This eliminates the risk of confusion and mix-ups.
Release bolts.
Tightening torque 12 14 1AZ.
Remove knock sensors (1).
Fig. 36: Locating Knock Sensors
NOTE: Now clear the fault memory.
CODING CONTROL MODULE (DME / DDE)
Switch off ignition.
Connect MoDiC or DIS/GT1 Tester.
Switch on ignition.
Select "Coding" program.
For subsequent procedure, follow instructions in MoDiC or DIS/GT1 Tester.
Carry out adjustment of following control units:
PROGRAMMING CONTROL UNIT (DME / DDE)
Switch off ignition.
Connect MoDiC or DIS/GT1 Tester.
Switch on ignition.
Select "Programming".
For subsequent procedure, follow instructions in MoDiC or DIS/GT1 Tester.
Carry out adjustment of following control units: