E064

TEST CONDITIONS
1. Cruise control enabled;
2. Cruise control engaged.

FAILURE CONDITIONS
Vehicle speed increases more than 4 MPH in 1/4 second.

ACTION TAKEN
Disengage cruise control.

DESCRIPTION
Code E064 is designed to set when the vehicle speed is increasing at an extremely rapid rate (wheelspin). It is a protective measure so that the wheels will not be under cruise control when on ice.

NOTES ON INTERMITTENTS
If code E064 is stored as an intermittent code and the customer complains of frequent loss of cruise control, drive the car while observing ECM data ED12, vehicle speed. If the speed displayed is erratic, check the operation and integrity of the speed sensor circuit.

^ Code E064 sets when the vehicle speed increases greater that 16 MPH in one second with the cruise engaged (4 MPH in 114 second).
^ If code E064 is set, cruise control will disengage and Code E064 is stored in memory.
^ Most occurences of Code E064 are caused by wheelspin due to icy or wet conditions.
^ If Code E064 is found and no other cruise control faults exists, clear codes and road test vehicle. If Code sets without wheelspin, refer to Chart C-1. Chart C-1 PCM/ECM Replacement Check

WHEN ALL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR CODES AND VERIFY OPERATION