Key facts
- Manuals
- 1
- Languages
- EN
- Last added
- 2023-10-17
Featured Mack manuals
Mack CHU CXU GU TD Engine Control Module Diagnostic Trouble Code Guide
This service manual details diagnostic trouble codes (DTCs) and troubleshooting for Mack’s 2010 emissions-compliant engine control modules (ECMs) for CHU, CXU, GU, and TD models. It covers OBD systems, module communication via SAE J1939, and ECM functions like fuel timing, EGR, turbo control, and derate modes. Diagnostic tools and scan tool requirements are specified, including restrictions on clearing DTCs via the instrument cluster.
The manual includes safety warnings, operational notes, and detailed sections on emission-critical ECUs, sensor monitoring, and fault logging. It also explains how to interpret MIL warnings and perform diagnostics using scan tools connected to the Serial Communication Port.
Covers: Engine Control Module (ECM) · On Board Diagnostic (OBD) Monitors · Troubleshooting · Diagnostic Trouble Codes (DTCs) · SAE J1939 Data Link · Scan Tool Requirements
Latest Mack manuals
Mack CHU CXU GU TD Engine Control Module Diagnostic Trouble Code Guide
Service Manual 98 pages · 3.5 MB · ENService manual for Mack CHU, CXU, GU, TD ECMs covering DTCs, OBD, troubleshooting, and repair procedures.
Which document do I need?
Service Manual
Disassembly, diagnostics and part numbers, for repair.
Questions answered in Mack manuals
Can DTCs be cleared using the instrument cluster?
No, DTCs can no longer be cleared using the vehicle’s instrument cluster digital display and stalk switch control.
From: Mack CHU CXU GU TD Engine Control Module Diagnostic Trouble Code Guide
What is required to perform diagnostic work?
The use of a scan tool is necessary to perform diagnostic work as well as clearing any diagnostic trouble codes (DTCs).
From: Mack CHU CXU GU TD Engine Control Module Diagnostic Trouble Code Guide