Cummins ISM Code 352 is the official Cummins fault code troubleshooting PDF that documents the sensor voltage supply on ISM CM570 (1999-02) engines. This 5-page reference from the Cummins service literature explains the circuit, the likely causes behind the yellow warning lamp, and the step-by-step checks a technician follows to confirm the repair.
Official document details
| Brand | Cummins |
|---|---|
| Model coverage | ISM CM570, ISX CM570 and Signature CM570 (1999-02) |
| System / Group | Sensor Voltage Supply (DTCs) |
| Fault code | Code 352 · PID S232 · SPN 620 · FMI 4/4 |
| Warning lamp | Yellow |
| Year / Revision | Copyright 2017 |
| Pages | 5 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit description
- Component location
- Shop talk – possible causes
- Troubleshooting steps
- Fault code verification and clearing
Cummins ISM Code 352 troubleshooting summary
The electronic control module (ECM) supplies each of these sensors with (+) 5 VDC. If the supply line to any sensor is damaged, the sensor will not work correctly. Intake manifold pressure/temperature sensor is located on the intake manifold housing. The manual walks through 9 labelled troubleshooting steps that inspect connectors and pins, measure circuit resistance, and verify the fault code is inactive after the repair.
Low voltage on the sensor (+) 5-VDC supply line will be caused by
a short circuit to ground in a supply line, a short circuit between a
supply line or a return line, a failed sensor, or a failed ECM power
supply. — 1 of 5 —
www.TruckFaultCodes.com
Copyright 2017
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Referenced Cummins service tools and part numbers: 3824510.
Applicable truck models
This procedure applies to Cummins ISM CM570, ISX CM570 and Signature CM570 engines built in the 1999-02 range, as used in Class 8 highway trucks. Always confirm the exact engine dataplate before servicing. Full engine specifications and dealer support are available on the Cummins official website.
Who needs this Cummins ISM Code 352 manual
Heavy-duty diesel technicians, fleet service managers and independent workshop owners diagnosing a Code 352 on the sensor voltage supply rely on this document to follow the manufacturer procedure instead of guessing at parts. Because Code 352 shares its troubleshooting logic with the ISX CM570 and Signature CM570 platforms, a single PDF supports several Cummins engine families in the same workshop.
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