Connecting The Breakout Box, Trailer Module (TRM)

Connecting breakout box, trailer module (TRM)

Special tools:
951 1428 Breakout box 951 1428 Breakout box
951 2888 16-pin AUD adapter 951 2888 16-pin AUD adapter
951 1508 Adapter 10-7-5 pin 951 1508 Adapter 10-7-5 pin

Caution! Avoid touching control module connector pins and associated cable harness connectors. There is risk of electrostatic discharge, which could cause damage in the control module. Discharge yourself and the tools to be used by holding the metal part of the tool and at the same time touch a part of the body immediately before starting to work.

General information
Visually check the connectors to ensure that the male and female terminals are not damaged and that the cables for the female halves are properly connected.
The breakout box is designed for easier reading of:
- control module's output and input signals when the control module is connected.
- leads' and components' resistance, when the control module is disconnected.
Using the breakout box reduces the risk of short-circuiting leads and damaging pins in the connectors.

Connecting the breakout box
- Make sure that the ignition is off.
- Connect the breakout box 951 1428 Breakout box 951 1428 Breakout box to the adapter.

Trailer module (TRM)
- Unplug the connectors for trailer hitch (TRM), see: Trailer Module (TRM) Removal and Replacement
- Connect the adapter 951 2888 16-pin AUD adapter 951 2888 16-pin AUD adapter for connector C1 on the control module.
- Connect the adapter 951 1508 Adapter 10-7-5 pin 951 1508 Adapter 10-7-5 pin for connector C2 on the control module.

Note! Before the functions in the control module can be checked and measurements taken, any removed fuses must first be reinstalled.

Other information
- For connector C1 terminals #C1:1-#C1:2 correspond to terminals #31-#32 on the breakout box.
- For connector C2 terminals #C2:1-#C2:5 correspond to terminals #22-#26 on the breakout box.
- For more information on signals and other values, see Signal specification, trailer module (TRM) Signal Specification, Trailer Module (TRM)
- For information about checking power supply and ground connection see: Checking the voltage/ground terminal, Trailer module (TRM) Component Tests and General Diagnostics
- For further information on fuses and grounding points, see the relevant wiring diagram.