Cummins ISM code 147 is the DiagTechPro reference page for this Cummins diagnostic fault code 147 document, a 6-page PDF sourced from TruckFaultCodes.com (Copyright 2017) that covers the frequency throttle circuit. The frequency throttle provides the driver’s throttle command to the electronic control module (ECM) through the actuator harness and the OEM engine harness. The ECM uses this signal to determine the fueling command. When the condition is detected the ECM logs the fault and turns on the red warning lamp to alert the driver and technician.
Cummins ISM code 147 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISM CM570 (1999-02) / DTCs; ISX CM570 (1999-02) / DTCs; Signature CM570 (1999-02) / DTCs |
| System / Group | ISM CM570 (1999-02) / DTCs |
| Fault identifier | Code 147 (PID P91, SPN 091, FMI 8) |
| Warning lamp | Red |
| Source | TruckFaultCodes.com |
| Year / Revision | Copyright 2017 |
| Pages | 6 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Shop Talk
- Troubleshooting Steps
- Repair verification and clearing fault codes
Applicable truck models
This document applies to Cummins ISM CM570 (1999-02) / DTCs; ISX CM570 (1999-02) / DTCs; Signature CM570 (1999-02) / DTCs electronic engines used in on-highway and vocational trucks. Throttle location varies with each OEM. Use the OEM troubleshooting and repair manual. The troubleshooting section walks through connector and pin inspection, engine-harness resistance measurements and pin-to-pin continuity checks, and ends with a road test that confirms the code is inactive and all fault codes are cleared. Because the same procedure isolates the sensor, the harness and the ECM in turn, it prevents replacing parts that are still good. Verify engine calibration and coverage against the official Cummins engine support site before ordering parts.
Who needs this Cummins ISM code 147 manual
Any mechanic or workshop owner diagnosing ISM code 147 needs this PDF to follow the factory circuit and resistance checks in the correct order. The frequency throttle can either be used in conjunction with a voltage throttle or by itself.
Related manuals library
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