Powertrain Controls - ECM/PCM

Code 65:

Cruise Circuit:

CIRCUIT DESCRIPTION:

The PCM applies 5.0 volts to the cruise control servo position sensor through PCM terminal "BA10" and receives a returned frequency from servo terminal "B" (CKT 398). Depending on the actual servo position, the AC frequency will vary indicating to the PCM the position of the servo. The PCM uses this information to control the servo position when cruise is engaged.

Code 65 will set when:

^ CKT 398 is opened, grounded or shorted to voltage.
^ CKT 399 is opened.

NOTE: Code 65 does NOT illuminate the "Service Engine Soon" light.

DIAGNOSTIC AIDS:

An intermittent may be caused by a poor connection, rubbed through wire insulation, or a wire broken inside the insulation.

Check:

^ Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wire connection, and damaged harness.