Powertrain Management

DTC P0601, P0602, P0606, P060B, P061C, P062C, P062F, or P2610

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptors
DTC P0601
- Control Module Read Only Memory (ROM)

DTC P0602
- Control Module Not Programmed

DTC P0606
- Control Module Internal Performance

DTC P060B
- Control Module Analog to Digital Performance

DTC P061C
- Control Module Engine Speed Performance

DTC P062F
- Control Module Long Term Memory Performance

DTC P2610
- Control Module Ignition Off Timer Performance

Description

These DTCs apply to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if the ECM is not programmed.

The ECM monitors its ability to read and write to the memory. It also monitors a timing function.

Conditions for Running the DTC

P0601

DTC P0601 runs on ECM power down.

P0602, P2610

These DTCs run once per ignition cycle.

P0606
* DTCs P1224, P1227, P122A, P1233, P1236, P1239, P1242, P1244, P1247, P2146, P2149, P2152, P2155 are not set.
* The engine speed is greater than 1,200 RPM.
* The engine run time is greater than 10 s.
* The battery voltage is greater than 8 V.
* DTC P0606 runs continuously when the above conditions are met.

P060B, P062F

These DTCs run continuously when the ignition is ON.

P061C

DTC P061C runs continuously when the engine is running.

Conditions for Setting the DTC

The ECM detects an internal failure or incomplete programming for greater than 30 s.

Action Taken When the DTC Sets

* DTCs P0601, P0602, P0606, P060B, and P062F are Type A DTCs.
* DTCs P061C and P2610 are Type B DTCs.

Conditions for Clearing the MIL/DTC

* DTCs P0601, P0602, P0606, P060B, and P062F are Type A DTCs.
* DTCs P061C and P2610 are Type B DTCs.

Diagnostic Aids

Low voltage or a momentary loss of power or ground to the ECM may cause a DTC to set. Verify the following:

* The battery cables are clean and tight, and the battery is fully charged. Refer to Battery Inspection/Test Battery Inspection/Test.
* The ECM ground circuits do not have an open or high resistance.
* The ECM power circuits do not have an open, short to ground, or high resistance.

Reference Information
Schematic Reference

Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference

Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)
Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P0601, P0602, P0606, P060B, P061C, P062F, or P2610 should not set.
2. 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

1. Ignition ON, clear the DTC information with a scan tool.
2. Observe the DTC information with a scan tool.

• If DTC P0602 is set, reprogram the K20 ECM. Refer to Control Module References Control Module References. If DTC P0602 resets, replace the K20 ECM.
• If DTC P0601, P0606, P060B, P061C, or P062F failed this ignition, replace the K20 ECM.

Note: DTC P2610 can be set with a loss of battery voltage to the K20 ECM. Disconnecting the battery or an intermittent condition in the battery positive voltage circuit to the ECM will set DTC P2610.

3. If DTC P2610 failed this ignition, test the K20 ECM battery positive voltage circuit for an open/high resistance or a short to ground. Also, test the K20 ECM ground circuits for an open/high resistance. If the circuits test normal, replace the K20 ECM.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* If DTC P0606 was set, perform the scan tool Diesel Particulate Filter (DPF) Regeneration Enable Diesel Particulate Filter (DPF) Regeneration Enable procedure if the scan tool DPF Soot Mass is less than 30 g. If the scan tool DPF Soot Mass is 30 g or greater, perform the Diesel Particulate Filter (DPF) Service Regeneration Diesel Particulate Filter (DPF) Service Regeneration procedure.
* Control Module References Control Module References for ECM replacement, setup, and programming