This Cummins intake temperature document is a 5-page PDF for Fault Code 154 troubleshooting on the intake manifold air temperature sensor circuit. It identifies the sensor function, location, resistance checks, harness tests, and final fault-code clearing steps used with a diagnostic tool.
Official Cummins intake temperature document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB CM550 (1990-94) |
| System/Group | DTCs; intake manifold air temperature sensor circuit |
| Publication no. | Not shown in the extract |
| Year/Revision | Unknown; document copywrite 2017 as shown in extract |
| Pages | 5 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- FAULT CODE: 153
- PID: P105
- SPN: 105
- FMI: 3 or 4
- INTAKE MANIFOLD AIR TEMPERATURE SENSOR CIRCUIT
- DESCRIPTION
- COMPONENT LOCATION
- TROUBLESHOOTING STEPS
- Step 1A: Check for active fault codes using the diagnostic tool
- Step 2A: Inspect the intake manifold temperature sensor and engine harness connector pins
- Step 2B: Check sensor resistance from pin A to pin B
- Step 2C: Check for a short circuit to ground
- Step 3A: Inspect the engine harness and the ECM connector pins
- Step 3B: Check for an open circuit between ECM harness pins 19 and 34 and the sensor connector
- Step 3C: Check harness short circuit to ground
- Step 3D: Check short circuit from pin to pin
- Step 4A: Disable the fault code, idle the engine, and verify Fault Code 153 or Fault Code 154 inactive
- Step 4B: Clear inactive fault codes
Applicable truck models
This file applies to Cummins ISB CM550 (1990-94) DTC troubleshooting where the intake manifold air temperature sensor circuit is being diagnosed. The extract does not list truck makes or chassis models, but it states the intake manifold air temperature sensor is located on the side of the intake manifold at the rear of the head. For engine manufacturer information, visit Cummins official website.
Who needs this Cummins intake temperature manual
Workshop owners, diesel mechanics, and fleet technicians need this Cummins intake temperature manual when diagnosing Fault Code 154 or related Fault Code 153 activity on an ISB CM550 engine. It is also useful when checking Fault Code 352, Fault Code 386, the +5-VDC common supply, sensor common ground, or possible open and short circuits in the engine harness.
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