Diesel ECM / ECU Diagnostic Test Lead Kit (Bench & On-Engine)

Diesel ECM / ECU Diagnostic Test Lead Kit – Bench & On-Engine Testing

The Diesel ECM / ECU Diagnostic Test Lead Kit is designed for technicians who need reliable electrical connections when diagnosing, programming, or bench testing diesel engine control modules.

Whether you are working with PACCAR, Detroit Diesel, Caterpillar, or Volvo diesel engines, this kit provides OEM-style diagnostic contacts that properly interface with factory ECU and ECM connectors.

Commonly searched as:

• diesel ECM test kit

• ECU bench testing harness

• PACCAR MX13 ECM test leads

• Detroit Diesel diagnostic harness

• Caterpillar ECU testing cable

• diesel engine ECU programming leads

This professional test kit eliminates unreliable back-probing methods and ensures secure electrical connections during diagnostics.

Designed for Professional Diesel Diagnostics

Technicians often struggle when probing ECM connectors using generic leads or improvised tools. This can result in:

• Damaged terminals

• Poor signal connections

• Inaccurate readings

• Failed diagnostics

The ERD Powertrain Diesel ECM Test Kit uses OEM-style contacts that properly mate with ECU connectors, ensuring accurate testing and protecting the integrity of control module terminals.

Compatible Diesel Engine Control Modules

This diagnostic test lead kit is designed to interface with:

• Detroit Diesel ACM (Aftertreatment Control Module)

• Detroit Diesel MCM (Motor Control Module)

• Detroit CPC / CPC2 / CPC4 / CPC5

• PACCAR MX-11 ECM

• PACCAR MX-13 ECM

• Caterpillar 40-Pin ECU

• Caterpillar 70-Pin ECU

This makes the kit ideal for diesel repair shops, ECM programmers, fleet maintenance departments, and engine rebuilders.

Select Wire Length & Configuration

1 FT Leads – Ideal for Bench Testing

Includes:

• 5x Caterpillar ECU sockets (40-pin / 70-pin) – 18 AWG

• 5x PACCAR MX-11 / MX-13 female contacts – 18 AWG

• 4x Detroit ACM / MCM / CPC / CPC2 / CPC5 female contacts – 14 AWG

Power leads included:

• 2x Green

• 2x Red

Perfect for ECM bench programming and controlled diagnostics.

5 FT Leads – Extended Reach for On-Engine Testing

Includes the same contact configuration with extended 5-foot diagnostic leads, allowing easier access during engine troubleshooting and live diagnostics.

Optional Add-On: Banana Jack Connections

Quick-connect banana jack leads are available in:

• Yellow

• White

• Red

• Black

• Green

These connectors allow easy connection to:

• Power supplies

• Multimeters

• Oscilloscopes

• ECM bench testing setups

Why Choose ERD Powertrain Test Leads?

ERD Powertrain specializes in OEM-style diagnostic contacts and harness repair solutions for diesel engines. Our test kits allow technicians to perform professional diagnostics without damaging ECU connectors or compromising electrical integrity.

Key Features

• Diesel ECM / ECU diagnostic test harness

• OEM-style ECU contacts

• Compatible with PACCAR, Detroit Diesel, Caterpillar & Volvo

• Bench testing and on-engine diagnostics

• Optional banana jack connections

• Available in 1FT or 5FT lead lengths

• Professional tool for diesel repair technicians

⚠ ECU / ECM modules are NOT included.