This Cummins 1696 troubleshooting document is a fault-code diagnostic procedure for Cummins CM2250 engines with Sensor Supply 5 voltage below normal or shorted to low source. It explains the circuit, fault conditions, affected sensors, guided troubleshooting steps, ECM checks, and repair validation with INSITE™ electronic service tool.
Official Cummins 1696 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Sensor Supply 5 Circuit |
| Publication no. | 4022254 for ISB6.7 CM2250; other associated bulletin numbers include 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 18-Jan-2011 |
| Pages | 19 |
| File size | 0.2 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 2A – Inspect the accelerator pedal/lever position sensor and circuit connected to the sensor supply and return.
- Guided Step 2B – Inspect the aftertreatment diesel particulate filter differential pressure sensor and circuit connected to the sensor supply and return.
- Guided Step 2C-1 – Check the circuit response.
- Guided Step 2E-1 – Check the circuit response.
- Guided Step 3C – Check for a pin-to-ground short circuit in the OEM harness.
- Guided Step 4B – Disable the fault code.
Applicable truck models
This file applies to Cummins CM2250 engine platforms listed in the procedure, including ISB6.7 CM2250 and related CM2250 models where Fault Code 1696 is used for the Sensor Supply 5 circuit. The extract identifies Sensor Supply 5 as a 5 volt supply for the aftertreatment diesel particulate filter differential pressure sensor, remote accelerator, engine coolant level sensor, fan speed sensor, and accelerator position sensor 2. The document is written for diagnostic work on the OEM harness, ECM OEM harness connector, sensor supply and return wiring, connector pins, ECM calibration code, and possible ECM replacement authorization. For manufacturer information, visit Cummins official website.
Who needs this Cummins 1696 troubleshooting manual
Workshop technicians, fleet mechanics, and diagnostic specialists need this Cummins 1696 troubleshooting manual when an amber CHECK ENGINE light or MIL is linked to SPN 3513 FMI 4/4 and low voltage on Sensor Supply 5. It is useful when checking active, inactive, or intermittent faults with INSITE™ electronic service tool and when inspecting sensors, harness connectors, shorts to ground, pin-to-pin shorts, and ECM calibration status.
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