Connecting Hand-Held Tester (HHT)

NOTE: Observe all system specific instructions listed in the "Preparation for Test" section of each Test Program.

Diagnostic trouble codes (DTC's) which have been stored due to testing or the disconnection of lines must be erased from the diagnostic trouble code memory at the end of testing.

The following functions can be performed according to the instructions on the display:
a) Reading/erasing DTC memory
b) Reading actual values
c) Performing activations
d) Programming control modules

DTC readout is no longer possible using the impulse counter scan tool.

Special Tools:

38-pole Data Link Connector (X11/4)

Connection Diagram:

087 Hand-Held Tester (HHT)
094 Multiplexer, 965 589 00 40
X11/4 Data link connector
Adapter cable, 965 589 00 50 00 (not shown)

1. Connect HHT with Multiplexer (094) attached to Data link connector X11/4.
2. Turn Ignition: ON
3. According to instructions in HHT display:
a) Readout DTC memory/erase
b) Readout Actual values
c) Perform Activations
d) Program control modules
4. Disconnect HHT.

NOTE: Diagnostic trouble codes (DTC's) which have been stored due to testing or the disconnection of lines must be erased from the diagnostic trouble code memory at the end of testing.