This Cummins code 432 document is a 9-page troubleshooting PDF for Fault Code 432 on the accelerator pedal circuit. It identifies PID P091, SPN 091, and FMI 13, then gives step-by-step electrical checks for the accelerator position sensor, idle validation switch, OEM harness, and ECM connectors.
Official Cummins code 432 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB CM550 (1990-94) |
| System/Group | DTCs; accelerator pedal circuit (ISS) |
| Publication no. | Not shown in the extract |
| Year/Revision | Unknown; source page shows Copywrite 2017 |
| Pages | 9 |
| File size | 0.8 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code: 432
- PID: P091
- SPN: 091
- FMI: 13
- Accelerator Pedal Circuit (ISS)
- Description
- Component Location
- Troubleshooting Steps
- Step 1A: fault code disable procedure and accelerator pedal sweep
- Step 1B: idle validation fault code check
- Step 2A: OEM harness and ECM connector inspection
- Step 2B through Step 2E: resistance, open circuit, short to ground, and pin-to-pin short checks
- Step 3A: verify Fault Code 432 is inactive
- Step 3B: clear inactive fault codes
Applicable truck models
This file applies to Cummins ISB CM550 (1990-94) engine diagnostics where Fault Code 432 is used for the accelerator pedal circuit. The extract does not name a specific truck make or chassis model, so the coverage should be matched to the installed Cummins engine, ECM, OEM harness, accelerator position sensor, and idle validation switch configuration. Connector pin letters for the accelerator pedal wiring are examples, and the document notes that connector pin assignments can vary by equipment manufacturer while the base troubleshooting logic still applies. For manufacturer information, visit Cummins.
Who needs this Cummins code 432 manual
Mechanics, fleet technicians, and workshop owners need this code 432 manual when diagnosing an accelerator pedal signal fault that affects fueling request input to the ECM. The procedure supports checks for damaged pins, corrosion, moisture, missing seals, sensor resistance, OEM harness continuity, opens, shorts to ground, and shorts between connector pins.
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