This fault code 154 DTCs document is a troubleshooting PDF for the intake manifold air temperature sensor circuit on ISB6.7 CM2150 engines. It explains the fault logic, ECM response, connector checks, circuit resistance tests, and final clearing steps using INSITE™.
Official fault code 154 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09) |
| System/Group | DTCs; intake manifold air temperature sensor circuit |
| Publication no. | Not shown in extract |
| Year/Revision | Unknown; last modified 20-Jul-2010 |
| Pages | 12 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes.
- Guided Step 2 – Check the intake manifold air temperature sensor and circuit.
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 4 – Clear the fault codes.
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 (2007-09) engine diagnostics and references ISB, ISC, and ISL intake manifold temperature sensor circuit information. The extract identifies the intake manifold air temperature sensor in the air intake manifold and points to Procedure 100-002 for detailed component location, while the diagnostic itself runs continuously with the keyswitch in the ON position. For official brand information, visit Cummins.
Who needs this code 154 DTCs manual
Workshop owners, diesel mechanics, and diagnostic technicians need this manual when an amber CHECK ENGINE light is linked to low signal voltage on the intake manifold air temperature circuit. The procedure is useful when checking whether the problem is a defective sensor, connector contamination, damaged pins, a signal wire short to ground, a pin-to-pin short, or an ECM response issue.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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