Bendix Commercial Vehicle Systems EC-80 ABS ATC SD - Manual (Page 32)

32
ABS/ATC WIRING
ECU Wiring Harness Connectors
Bendix ® EC‑80 ™ controllers are designed to interface with
AMP MCP 2.8 connectors as referenced in Chart 4. Follow
all AMP requirements for the repair of wire harnesses.
All wire harness connectors must be properly seated. The
use of secondary locks is strongly advised.
All unused ECU connectors must be covered and
receive proper environmental protection.
ABS Wiring Requirements
As a matter of good practice and to ensure maximum
system robustness, always use the maximum size wire
supported by the wire harness connectors for battery,
ignition, ground, PMV, TCV, Interaxle Differential Lock and
indicator lamp circuits.
All sensor and serial communications circuits (J1939) must
use twisted pair wiring (one to two twists per inch). See the
appropriate SAE document for additional details.
All wires must be carefully routed to avoid contact with
rotating elements. Wiring must be properly secured
approximately every 6 to 12 inches using UV stabilized,
non‑metallic hose clamps or bow‑tie cable ties to prevent
pinching, binding or fraying.
It is recommended that wires be routed straight out of a
connector for a minimum of three inches before the wire
is allowed to bend.
Battery and ground wires should be kept to a minimum
length.
If convoluted tubing is used, its I.D. must match the size of
the wire bundle as closely as possible.
Wire harness lengths must be carefully selected for
the vehicle. Harnesses that are too long increase the
possibility of electrical interference and wire damage.
Excess lengths of wire are not to be wound to form
coils, instead re-route, repair or replace wire harness.
Do not attempt to stretch harnesses that are too short,
since mechanical strain can result in wire breakage.
Troubleshooting: Wiring