Cab Electrical and Electronic Components

eM2 d 9.04.001

Pass-Through Bulkhead Connector

The pass-through bulkhead connector is where the interior dash harness connects to the exterior chassis harness. This provides a disconnect point for harness service, testing, and replacement. It is located on the driver-side front wall of the vehicle. See Fig..

Signal Detect and Actuation Module (SAM)

The signal detect and actuation module (SAM) is the primary module in the electrical system, combining chassis power distribution, cab power distribution, and modular switch functions into a single ECU. The SAM does not contain fuses or relays.

The SAM reads input information from sensors, switches, and databus messages, and drives output and controller area network (CAN) messages. The SAM is located behind the passenger side lower dash panel. See Fig..

  1. SAM

  2. CTP

  3. VRDU

  4. VPDM

  5. ECHO Logger

  6. Connect 5

  7. HMC

  8. ECPC

  9. Front Wall Interior Ground Stud

  10. Pass-Through Bulkhead Connector

Fig. 1, Cab Power Distribution and Component Location Overview

Note:
Parent topic: Electric Vehicle Power Distribution
Document Number: 0000087881
Manual Publication Date: 2024-03-21
Topic Publication Date: 2024-10-01