Diagnostic Instructions
DTC Descriptors
DTC P0601: Control Module Read Only Memory (ROM)
DTC P0602: Control Module Not Programmed
DTC P0606: Control Module Internal Performance
DTC P0607: Control Module Performance
DTC P060A: Control Module Monitoring Processor Performance
DTC P060C: Control Module Main Processor Performance
DTC P060D: Control Module Accelerator Pedal Position (APP) System Performance
DTC P061A: Control Module Torque 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.
Conditions for Running the DTC
P0601, P0602, and P060D
| • | The ignition is ON, or the engine is running. |
| • | The DTCs run once an ignition cycle. |
P0606, P0607, and P060C
| • | The ignition is ON, or the engine is running. |
| • | The ignition voltage is between11-16 volts. |
| • | The DTC runs continuous once the above conditions are met. |
P060A and P2610
| • | The engine is running for at greater than 10 seconds. |
| • | The ignition voltage is greater than 11 volts. |
| • | The DTC runs once an ignition cycle. |
Conditions for Setting the DTC
P0601
The ECM detects that the checksum calculation does not match the expected checksum.
P0602
The controller is identified as a service replacement ECM.
P0606, P0607, and P060A, P060C, P060D, and P061A
The ECM detects an internal condition for greater than 3 seconds.
P2610
The ECM detects an error with the Ignition OFF timer.
Action Taken When the DTC Sets
| • | DTCs P0601, P0602, P0606, P060A, and P060D are type A DTCs. |
| • | DTC P0607, P060C, and P061A are a type B DTCs. |
| • | DTC P2610 is a type C DTC. |
| • | The ECM will disable engine operation or command the TAC system to operate in a Reduced Engine Power mode. |
| • | The ECM commands the reduced engine power indicator ON. |
Conditions for Clearing the DTC
| • | DTCs P0601, P0602, P0606, P060A, and P060D are type A DTCs. |
| • | DTC P0607, P060C, and P061A are a type B DTCs. |
| • | DTC P2610 is a type C DTC. |
Diagnostic Aids
| • | A low battery condition may cause DTC P2610 to set. |
| • | An intermittent condition at the ignition switch may cause DTC P2610 to set. |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
Description and Operation
Engine Control Module Description
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Circuit/System Testing
- 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
. If DTC P0602 resets, replace the ECM. |
| ⇒ | If DTC P2610 failed this ignition, test the
ECM ignition 1, and battery positive voltage circuits, for an open/high resistance or a short to ground. If the circuits test normal, replace the ECM. |
- Observe the DTC information with a scan tool. Verify DTCs P0601, P0604, or P0606 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
after completing the diagnostic procedure.
Control Module References
for ECM replacement, setup, and programming
