Diagnostic Instructions
DTC Descriptors
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 P062C: Control Module Vehicle 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
P0602
| • | The ignition switch is ON. |
| • | The controller is identified as a service replacement ECM. |
P0606
| • | The ignition switch is in Run or Crank. |
| • | The power take-off (PTO) is inactive. |
| • | The cruise control is inactive. |
P060B
| • | The engine speed is more than 650 RPM. |
P061C
| • | The engine speed is less than 1,300 RPM. |
P062C
The ignition is ON.
P062F
The ignition is ON.
P2610
The ECM is powered up.
Conditions for Setting the DTC
P0602
| • | The ECM has not been programmed at Key On and Engine Off for 0.1 second. |
| • | This diagnostic runs continuously. |
P0606
| • | The ECM detects a microprocessor undervoltage or overvoltage condition. |
| • | The ECM detects an internal bus communication error. |
| • | The ECM detects an internal clock error. |
| • | The ECM detects an internal injector control error. |
| • | All tests run in less than 1 second. |
| • | This DTC runs continuously. |
P060B
| • | The ECM detects an incorrect internal analog/digital (A/D) signal for less than 1 second. |
| • | This DTC runs continuously. |
P061C
| • | The ECM detects that there is a difference between the CKP engine speed and the calculated engine speed of more than 320 RPM for less than 1 second. |
| • | This diagnostic runs continuously. |
P062C
| • | The ECM detects a fault in the ship that calculates redundant vehicle speed for more than 1 second. |
| • | This DTC runs continuously. |
P062F
| • | The ECM did not complete the last electronic erasable programmable read only memory (EEPROM) write event during the last ECM power down. |
| • | This diagnostic runs once per ignition cycle at power up. |
P2610
| • | The ignition off-timer is less than 0 second. |
| • | The ignition off-timer is less than 5 seconds for more than 10 seconds. |
| • | The ignition off-timer is unchanged for 60 seconds. |
| • | The ignition off-timer is not incrementing in 1-second intervals. |
Action Taken When the DTC Sets
| • | DTCs P0602, P0606, P060B, P061C, P062C and P062F are Type A DTCs. |
| • | DTC P2610 is a Type B DTC. |
Conditions for Clearing the MIL/DTC
| • | DTCs P0602, P0606, P060B, P061C, P062C and P062F are Type A DTCs. |
| • | DTC P2610 is a Type B DTC. |
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Circuit/System Testing
- Observe the DTCs with the scan tool.
| ⇒ | If DTC P0606 was set while performing SPS Programming, clear the DTCs and exit the diagnostic. |
- Test the voltage and ground circuits to the control module for the following:
Important: DTC P2610 can be set with a loss of battery voltage to the ECM with the ignition ON. The ignition must be in the OFF position before disconnecting the ECM.
- If DTC P2610 is set, turn the ignition OFF and then completely disconnect the ECM harness connector from the ECM for approximately 1 minute. Reinstall all of the ECM connectors and then attempt to clear codes with the scan tool.
| ⇒ | If DTC P2610 resets after code clear, replace the ECM. |
- Replace the ECM.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ECM replacement, setup, and programming
