B0605

CIRCUIT DESCRIPTION
The EVO Module calibrations are stored in the Electronically Erasable Programmable Read Only Memory EEPROM. The Electronic Variable Orifice (EVO) Module performs internal tests on the EEPROM and will indicate if any calibration faults (checksum errors) are current.

CONDITION FOR SETTING THE DTC
If no calibrations were programmed in the EVO Module memory, or when an internal calibration failure (checksum error) is detected by the EVO Module, a code will set.

ACTION TAKEN WHEN THE DTC SETS
The EVO Module will not send any current to the EVO Solenoid. This will cause the EVO Solenoid valve to retract, providing maximum fluid flow at all times

CONDITIONS FOR CLEARING THE DTC
After the ignition is cycled and no internal calibration faults (checksum errors) are indicated by the EVO Module, or when the EVO Module is properly programmed.
- Current and history DTCs can be cleared by using the Tech 2 scan tool.





TEST DESCRIPTION
The numbers below refer to the step numbers on the EEPROM Checksum Error Diagnostic Table.
1. This step makes sure the "Diagnostic System Check" is completed.
2. This step checks if the EVO Module was previously replaced.
3. This step checks for a valid EEPROM I/D number stored.
4. This step indicates EVO Module replacement is required.

DIAGNOSTIC AIDS
The EEPROM is not removable from the EVO Module. If service is required, the module must be replaced.