Information Electronics Control Module 1 (J794)
Information Electronics Control Module 1 (J794)
Special Tools and Equipment
• Radio Removal Tool (T10057)
• Protective Cap For Wiring Harness Connector (VAS 6223/9)
Removal
- If the control module is replaced, select the "Replacement" function for the appropriate control module in "Guided Fault Finding".
Use the Vehicle Diagnosis, Testing & Information System (VAS 5051B).
- Switch off the ignition and all electrical consumers.
- Open the glove compartment and pull the lever in the - direction of arrow A -. This lowers the installation frame with the information electronics control module 1 in the - direction of the arrow -.
- Insert (T10057) into the release slots - arrows - until they engage.
- Pull the information electronics control module 1 via the gripping rings of the release tools in the - direction of the arrow - out of the installation frame.
- Release and disconnect the harness connectors - 2 - through - 7 -. Disconnect the fiber-optic cable - 1 - from the information electronics control module 1 and connect the protective cap (VAS 6223/9) to the disconnected fiber-optic cable connection.
• Fiber-optic cable is very delicate!
• The fiber-optic cable must not be kinked or significantly bent!
• Bending radius must not fall short of 25 mm.
• A kinked fiber-optic cable is no longer usable, data transfer via kinked fiber-optic cable is faulty!
• Please do not remove the protective caps from the ends of the fiber-optic cable until the fiber-optic cable is connected to the intended unit.
Installation
Installation is performed in the reverse order of removal.
When replacing radio navigation system control modules, it is necessary to adapt the replaced control modules to the vehicle. If this is not performed, component protection is activated for these control modules so that they do not work or only on a highly limited basis.
Adapt the control module. Refer to => [ Anti-Theft Component Protection ] Anti-Theft Component Protection.