P2610
DTC P0601-P0604, P0606, P062F, P16F3, or P2610
Diagnostic Instructions
* Preform 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)provides an overview of each diagnostic category.
DTC Descriptors
DTC P0601 00
- Control Module Read Only Memory Performance
DTC P0602 00
- Control Module Not Programmed
DTC P0603 00
- Control Module Long Term Memory Reset
DTC P0604 00
- Control Module Random Access Memory Performance
DTC P0606 00
- Control Module Processor Performance
DTC P062F 00
- Control Module Long Term Memory Performance
DTC P16F3 00
- Control Module Redundant Memory Performance
DTC P2610 00
- 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 accelerator pedal position (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 00
* The ignition switch is in run or crank.
* The check sum calculation at power-down in the last drive cycle had completely finished.
* DTC P0601 00 runs once per ignition cycle when the above condition is met.
P0602 00
* The ignition switch is in run or crank.
* DTC P0602 00 runs once per ignition cycle.
P0603 00
* The ignition switch is in run or crank.
* DTC P0603 00 runs once per ignition cycle.
P0604 00
* The ignition switch is in run or crank.
* The read/write test at power-down in the last drive cycle had completely finished.
* DTC P0604 00 runs once per ignition cycle when the above condition is met.
P0606 00
* The ignition switch is in the unlock, accessory, run, or crank positions.
* The system voltage is more than 5.23 V.
* DTC P0606 00 runs continuously when the above conditions are met.
P062F 00
* The ignition is in the unlock, accessory, run, or crank position.
* The system voltage is more than 5.23 V.
* DTCs P062F 00 runs once per ignition cycle.
P16F3 00
* DTC P0606 00 is not set.
* The ignition is in the unlock, accessory, run, or crank position.
* The system voltage is more than 5.23 V.
* DTCs P16F3 00 runs continuously when the above conditions are met.
P2610 00
* DTCs P0112 00, P0113 00, or P0114 00 are not set.
* The ignition is OFF.
* The ECM is not powered down.
* The intake air temperature (IAT) is between -40 to +80°C (-40 to +176°F).
* DTC P2610 00 runs continuous once the above conditions are met.
Conditions for Setting the DTC
The ECM detects an internal failure or incomplete programming for more than 10 s.
Action Taken When the DTC Sets
* DTC P0601 00, P0602 00.P0603 00, P0604 00, P0606 00, P062F 00, and P16F3 00 are Type A DTCs.
* DTC P2610 00 is a Type B DTC.
* The ECM will disable engine operating or command the TAC system to operate in a reduced engine power mode.
Conditions for Clearing the DTC
* DTC P0601 00, P0602 00.P0603 00, P0604 00, P0606 00, P062F 00, and P16F3 00 are Type A DTCs.
* DTC P2610 00 is a Type B DTC.
Diagnostic Aids
* A low battery condition may cause DTC P0606 00, and P2610 00 to set.
* An intermittent condition at the ignition switch may cause DTC P2610 00 to set.
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 Relearning)for scan tool information
Circuit/System Testing
1. Observe the DTCs with the scan tool.
• If DTC P0602 00 is set, attempt to program the K20 Engine Control Module before replacing the K20 Engine Control Module. Refer to Control Module References (Programming and Relearning)
• If DTC P0602 00 resets, replace the K20 Engine Control Module.
2. Test the K20 Engine Control Module voltage circuits at K20 Engine Control Module connectors terminals 3, 12, and 214 X1 and test the ground circuit at K20 Engine Control Module connector terminal 73 X2 for the following:
* A short
* An open
* High resistance
• If all circuits test normal, replace the K20 Engine Control Module.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Programming and Relearning)for ECM replacement, setup, and programming