P2610

DTC P2610 ECM/PCM INTERNAL ENGINE OFF TIMER PERFORMANCE




Contents




DTC Summary

Circuit Description




The soak timer is built into the ECM. To ensure that the EVAP monitor values will be accurate, the soak timer counts 5 hours (+ 15 minutes) from when the ignition switch is turned OFF. This will allow the fuel to cool down, which will stabilized the Fuel Tank Pressure (FTP). When 5 hours passed, the ECM turns ON.

Step 1 - 2:

Inspection Procedure

HINT: DTC P2610 is set if an internal ECM problem is detected. There are not diagnostics required. ECM replacement is required.

Monitor Description
When 5 hours have elapsed after the ignition switch is turned OFF, the electric vacuum pump creates negative pressure (vacuum) in EVAP system. Then ECM monitors for leaks and actuator malfunctions based on EVAP pressure.

While the engine running, the ECM is also monitoring time when the soak timer is running. When the soak timer and the ECM CPU's time values are different, the ECM interprets this as a malfunction, illuminates MIL and sets a DTC (2-trip detection logic).

OBDII Monitor Specification:

OBDII Monitor Specification