Lines, Connectors And Control Units - freightliner EconicSD Technical Information

8.1.3 Lines, connectors and control units


A connector must not be unplugged from or plugged into the control units while the ignition is on.

Lines must be protected from heat by means of insulation.

Chafing of electrical lines must be avoided.

Route cables in such a way that chafing cannot occur, particularly at crossover points and sharp
edges. If necessary, use cable ducts or guide tubes.

Do not carry out measurements at connector terminals using unsuitable tools (test probes, wire
ends, etc.). This may lead to contact problems due to the formation of transition resistance. Use
suitable test lines.

When feeding electrical lines, only the intended genuine feeds and pass-through are to be used
(corrugated tubing with feeding preparation). These are designated as Truck Equipment
Manufacturer feeds and are identified at each end by the colors black and white.

Electrical lines are to be routed from the chassis to the connectors X71 - X74 (inside the e-
compartment) only via the pivot point of the cab to allow tilting of the cab.

When performing drilling or other chip removing work, the shavings or chips produced must
always be fully cleared away to protect the wiring harnesses.

The louvers on the electrical compartment cover must never be closed off. They must remain
open and clear at all times.

Wherever possible, avoid fastening high-current electrical lines directly to the high-frequency lines
of the CAN bus and sensor lines (twisted lines).

The use of inline fuses, insulation connectors (insulation displacement terminals), etc. is to be
avoided. We recommend using the approved parts and tools described on the following pages.

If electrical lines need to be routed through the front end to the outside, the passage
(blind grommet) provided at the pedals is to be used. This can be additionally sealed using
commercially available sealant.
95