Connecting The Breakout Box, Engine Control Module (ECM)

Connecting the breakout box

Special tools:
951 2902 ECM adapter 951 2902 ECM Adapter
951 1428 Breakout box 951 1428 Breakout Box
951 1499 Cable 951 1499 Cable

Caution! Avoid touching control module connector pins and corresponding cable harness connectors. There is a risk of electrostatic discharge, which could damage the control module. Relieve any charge on yourself and the tools to be used by holding the metal part of the tool and touching part of the body just before starting work.

Hint: The breakout box is designed to facilitate the reading of control module input and output signals when the control module is connected as well as the resistance of cables and components when the control module is disconnected. Using the breakout box reduces the risk of unintentionally short-circuited cables or damaged connector pins.

Control module disconnection
- Wait 3 minutes after turning off the ignition before unplugging the connectors from the engine control module (ECM). The system relay must have released the voltage before the control module is removed from the vehicle. If the engine cooling fan runs after the ignition has been turned off, wait until it has stopped. Then wait an additional 3 minutes.
- Release the engine control module(ECM) as per:
Plenum chamber Service and Repair

Adapter connection
- Check that no connector pins or sleeves are damaged.
- Check that the male and female terminals on the engine control module (ECM) are undamaged and secure (cannot be pressed in). Check that the cables to the female terminals are secured to the terminal pins.
- Carefully install the vehicle wiring harness on 951 2902 ECM adapter 951 2902 ECM Adapter. Lock the connectors in position by pressing in the catches fully.

Breakout box and engine control module (ECM) connection
- Connect breakout box 951 1428 Breakout box 951 1428 Breakout Box to the adapter via wiring harness 951 1499 Cable 951 1499 Cable.
- Carefully install the adapter on the engine control module (ECM). Lock the adapter in position by pressing in the catches fully.

Removing the adapter and connector
- Wait 3 minutes after turning off the ignition. The main relay must have released the voltage before the control module is removed from the vehicle. If the engine cooling fan runs after the ignition has been turned off, wait until it has stopped and then wait an additional 3 minutes.

Note! Do not touch engine control module (ECM) connecting pins with your fingers. Engine control module (ECM) components can be damaged by static electricity.

- Carefully detach the engine control module (ECM) from the adapter wiring harness.

Note! Do not touch engine control module (ECM) connecting pins with your fingers. Engine control module (ECM) components can be damaged by static electricity.

- Carefully detach the adapter from the vehicle wiring harness.

Control module connection
- Check that no pins or sockets are damaged on the connector.
- Plug in the engine control module (ECM) connector.
- Refit the plastic covers, etc as per:
Plenum chamber Service and Repair