DTC P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 (ECM)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each of the diagnostic category.
DTC Descriptors
DTC P0601
- Control Module Read Only Memory Performance
DTC P0602
- Control Module Not Programmed
DTC P0603
- Control Module Long Term Memory Reset
DTC P0604
- Control Module Random Access Memory Performance
DTC P0606
- Control Module Processor Performance
DTC P0607
- Control Module Performance
DTC P060D
- Control Module Accelerator Pedal (APP) Position System Circuitry Performance
DTC P062F
- Control Module Long Term 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 DTCs
P0601, P0604
* The ignition switch is in Run or Crank.
* These DTCs run continuously when the above condition is met.
P0602, P0603, P062F
* The ignition switch is in Run or Crank.
* These DTCs run once per ignition cycle.
P0606, P0607, P060D
* The ignition switch is in Run or Crank.
* The system voltage is more than 6.0 V.
* Reduced Engine Power is not active.
* These DTCs run continuously when the above conditions are met.
P2610
* The intake air temperature is between -40 to +125锟斤拷C (-40 to +257锟斤拷F).
* DTC P2610 runs once per ignition cycle on ECM power down.
