Mercedes HHT

013 Impulse counter scan tool
087 Hand-Held Tester (HHT)
X4/10 Terminal block, Circuit 30
X11/4 Data link connector
Adapter cable 965 589 00 50 00 (not shown)*

Connect HHT as Follows:
Black wire (circuit 31, ground) Socket 1
White wire (circuit 15, voltage) Socket 16
Red wire (circuit 30) Battery + or X4/1O
Yellow wire to diagnostic output socket of the system being tested:
HFM-SFI engine control module Socket 8
Diagnostic Module Socket 3
Electronic accelerator/cruise control/idle speed control
(EA/CC/ISC) or (CC/ISC) control module Socket 14

The 4-pole "124" adapter cable must be used in place of the multiplexer cable when using the HHT. Special Tools

NOTE: DTC's which have been stored due to testing or disconnecting of lines must be erased from the DTC memory at the end of testing.