Preparation For Tests (Section 22)

WARNING: When performing test and adjustment work, the engine RPM should only be raised using the accelerator pedal. If the engine speed is raised via the control linkage in the engine compartment, the "Limp Home" mode will be activated and will be registered as a DTC in the EA/CC/ISC control module. The ASR MIL will also come on.

NOTE: If installing

Turn ignition OFF.
Remove LH-SFI control module (N3/1).
Connect socket box with contact module (140 589 02 63 00) and contact box to LH-SFI control module (N3/1) according to connection diagram.

NOTE: The following is for test steps 1.2, 1.3, 2.2-2.5, 4 and 36 only!

Turn ignition OFF. Remove base module (N16/1) and connect socket box with contact module (140 589 01 63 00) and contact box to base module.

If installing a LH-SFI control module from another vehicle, the control module self adaptation feature must be reset to its mean value. See LH-SFI CONTROL MODULE SELF-ADAPTATION under PROGRAMMING.

Fig 1: Identifying Special Tools

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Connecting Socket Box To Control Module

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.