Jaltest Volvo Bus ECS Diagnostics Cable JDC301A

The JDC301A is a diagnostic adapter cable designed for Volvo buses equipped with the ECS (Electronically Controlled Suspension) system.

✅ Main Purpose

It connects:

• Volvo 9-pin ECS diagnostic port (vehicle side)
  to

• 16-pin OBD2 diagnostic interface (tool side)

This allows communication between the bus and Jaltest diagnostic equipment.

Typical Functions

Using compatible Jaltest software (V8.1 / V9), this cable enables:

• Reading and clearing fault codes

• Viewing live data

• Performing system diagnostics

• Working specifically with the ECS (air suspension) control system