ECM
DTC P0601-P0604, P0606, P0607, P060D, P062F, P16F3, 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 Instructionsprovide an overview of each diagnostic category.
DTC Descriptors
DTC P0601
- Control Module Read Only Memory (ROM)
DTC P0602
- Control Module Not Programmed
DTC P0603
- Control Module Long Term Memory Reset
DTC P0604
- Control Module Random Access Memory (RAM)
DTC P0606
- Control Module Internal Performance
DTC P0607
- Control Module Performance
DTC P060D
- Control Module Accelerator Pedal Position (APP) System Performance
DTC P062F
- Control Module Long Term Memory Performance
DTC P16F3
- Control Module Redundant Memory Performance
DTC P2610
- Control Module Ignition Off Timer Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM) and the throttle actuator control (TAC) system. 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. The ECM and the TAC processors are used to monitor the TAC system data. Both processors monitor the other processors data to verify that the indicated APP calculation is correct. The ECM performs an intrusive test in order to confirm that the APP signals are not shorted together. The ECM accomplishes this by pulling the APP sensor 2 low momentarily and looking for sensor 1 to also be pulled low.
Conditions for Running the DTC
P0601, P0604
* The ignition is in Run or Crank.
* These DTCs run continuously when the above condition is met.
P0602, P0603, P062F
* The ignition is in Run or Crank.
* These DTCs run once per ignition cycle.
P0606, P0607
* The ignition switch is in Run or Crank positions.
* The system voltage is more than 6.0 V.
* These DTCs run continuously when the above conditions are met.
P060D
* The ignition switch is in Run or Crank.
* The system voltage is more than 6.0 V.
* Reduced engine power is inactive.
* DTCs P2120, P2122, P2123, P2125, P2127, P2128, P2138 are not set.
* DTC P060D runs continuously when the above conditions are met.
P16F3
* The ignition is ON or the engine is operating.
* DTC P16F3 runs continuously when the above condition is met.
P2610
* The intake air temperature is between -40 to +125°C (-40 to +257°F).
* DTC P2610 runs on ECM Power Down.
Conditions for Setting the DTC
The ECM detects an internal failure or incomplete programming for more than 10 s.
Actions Taken When the DTC Sets
* DTCs P0601, P0602, P0603, P0604, P0606, P060D, P062F, and P16F3 are Type A DTCs.
* DTC P0607 is a Type C DTC.
* DTC P2610 is a Type B DTC.
Conditions for Clearing the MIL/DTC
* DTCs P0601, P0602, P0603, P0604, P0606, P060D, P062F, and P16F3 are Type A DTCs.
* DTC P0607 is a Type C DTC.
* DTC P2610 is a Type B DTC.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Connector End Views By Name
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 Programming and Relearningfor scan tool information
Circuit/System Verification
1. Ignition OFF, open the hood to disable the Auto-Stop function. Refer to Hybrid Modes of Operation Description Hybrid Modes of Operation.
2. Ignition ON, verify the scan tool hood position parameter displays Open.
• If the hood position does not display Open, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle for DTC P254F.
Circuit/System Testing
Note: An intermittent or momentary, less than 1 s, loss of system voltage during throttle tip-in may set DTC P060D.
1. Ignition ON, clear the DTC information with a scan tool. Observe the scan tool DTC information. Verify that DTCs P0602 or P2610 do not fail this ignition cycle.
• If DTC P0602 failed this ignition, reprogram the ECM. Refer to Control Module References Programming and Relearning. If DTC P0602 resets, replace the ECM.
• If DTC P2610 failed this ignition, test the ECM ignition, battery positive voltage, and ground circuits for an open/high resistance or a short to ground. If the circuits test normal, replace the ECM.
2. Ignition ON, observe the DTC information with a scan tool. Verify DTCs P0601, P0603, P0604, P0606, P0607, P060D, P062F, or P16F3 do not set this ignition cycle.
• If any of the DTCs set this ignition cycle, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Programming and Relearningfor ECM replacement, programming and setup