Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P260E 01: Diesel Particulate Filter (DPF) Regeneration Indicator Control Circuit Shorted to VoltageDTC P260E 02: Diesel Particulate Filter (DPF) Regeneration Indicator Control Circuit Shorted to Ground
DTC P260E 04: Diesel Particulate Filter (DPF) Regeneration Indicator Control Circuit Open
DTC P260E 54: Diesel Particulate Filter (DPF) Regeneration Indicator Control Circuit High Temperature
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Diesel Particulate Filter Indicator Voltage Supply | P260E 04 | P260E 04 | -- | -- |
Diesel Particulate Filter Indicator Control | P260E 02 | P260E 04 | P260E 01 | -- |
Circuit/System Description
The diesel particulate filter indicator is located on the instrument panel cluster (IPC). Ignition 1 voltage is supplied directly to the diesel particulate filter indicator. The engine control module (ECM) turns the diesel particulate filter indicator ON by grounding the diesel particulate filter indicator control circuit.
Conditions for Running the DTC
| • | The engine is operating. |
| • | The ignition 1 voltage is between 7.5-16 volts. |
| • | The DTCs run continuously once the above conditions are met. |
Conditions for Setting the DTC
The ECM detects the diesel particulate filter indicator control circuit is open or shorted to ground or voltage.
Action Taken When the DTC Sets
DTC P260E is a Type C DTC.
Conditions for Clearing the DTC
DTC P260E is a Type C DTC.
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Engine idling, command the diesel particulate filter indicator ON and OFF with a scan tool. The lamp should turn ON and OFF.
- Observe the DTC information with a scan tool. DTC P260E should not set.
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
- If any other indicators are inoperative on the P16 instrument panel cluster (IPC), refer to Symptoms - Displays and Gages.
- Ignition OFF, disconnect the harness connector at the K20 ECM.
- Ignition ON, the diesel particulate filter indicator should not illuminate.
- Ignition ON, connect a 3 A fused jumper wire between the diesel particulate filter indicator control circuit terminal and ground. The diesel particulate filter indicator should illuminate.
| ⇒ | If the diesel particulate filter indicator illuminates, test the control circuit for a short to ground. If the circuit test normal, replace the P16 IPC. |
| ⇒ | If the diesel particulate filter indicator does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit test normal, replace the P16 IPC. |
| ⇒ | If the diesel particulate filter indicator illuminates, inspect for a poor connection or replace the K20 ECM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for ECM replacement, setup, and programming |
