P2610

DTC P2610: Lower Power Control Error

Circuit Description
The Engine Control Module (ECM) is the control center of the fuel injection system. It constantly looks at the information from various sensors and controls the systems that affect vehicle performance. The ECM also performs the diagnostic function of the system. It can recognize operational problems, alert the driver through the Malfunction Indicator Lamp (MIL) (Check Engine) and store a Diagnostic Trouble Code (DTC) DTCs which identify the problem areas to aid the technician in making repairs. An Electrically Erasable Programmable Read Only Memory (EEPROM) is used to house the program information and the calibrations required for engine, transmission and powertrain diagnostics operation. The ECM checks operation of Lower Power Counter Integrated Chip (I/C) and communication between main CPU and Lower Power Counter I/C. The ECM monitors EEPROM reset flag and Lower Power Counter I/C overflow bits. If the ECM detects if Lower Power Counter I/C has been reset due to battery disconnector Lower Power Counter I/C malfunction, the Diagnostic Trouble Code (DTC) will stored.

Conditions for Setting the DTC

Counter Error
- Ignition switch is turned to ON.
- Ignition voltage is greater than 11 V.
- Engine is running more than 10 seconds.

Counter Reset
- Ignition switch is turned to ON.
- Engine is not running.
- No NVM (Non Volatile Memory) reset occurred.

Action Taken When the DTC Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records buffers.
- A history DTC is stored.

Conditions for Clearing the MIL/DTC
- A history DTC will clear after 40 consecutive warm up cycles without a fault.
- The DTC(s) can be cleared using the scan tool.
- Disconnecting the ECM battery feed for more than 10 seconds.

Step 1-4:

Troubleshooting