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Diagnostic Manual, Chassis and Drivetrain,
Volume 2

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LOCATION:    6.1 Diagnosis - Complaint Related Diagnostic Chart   >   22 Electrical Test Program - Preparation for Test


Electrical Test Program - Preparation for Test

For all test steps performed with ignition ON, the LED must light up, i.e. battery voltage O.K.
When testing , all other electrical consumers must be turned off.
For 23.0 - 25.0 the rear wheels must be raised off the ground.

Note:
Unscrew locking tab (arrow, 23 Fig. 13) from
ABS-adapter plug 126 589 09 21 00.

Note:
The entire ABS test must be performed after any repairs or other work on either the ABS system or the brake system.

Note:
It is assumed that the technician is capable of testing switches, relays, lamps, connectors and wires for proper operation without further instructions.

Never drive the vehicle with the ABS-adapter (07) connected!

Equipment

Multimeter 1) Fluke models 23, 83, 85, 87
SUN DMM-5
1) Available through the MBUSA Standard Equipment Program.