P0703

DTC P0703 TCC Brake Input Diagnostic Chart:

TCC Brake Input Wiring Schematic:

CIRCUIT DESCRIPTION
The Powertrain Control Module (PCM) monitors the status of the Torque Converter Clutch (TCC) brake switch circuit through PCM terminal "BF3".

DIAGNOSTIC TROUBLE CODE (DTC) PO703 WILL SET WHEN
^ No DTC P0501 or P0502 is present.
^ Vehicle speed has been above 35 mph for 10 seconds and back to 0 mph five times.
^ TCC brake switch status has not changed from "Released" to "Applied" or "Applied" to "Released" as displayed on the Tech 1 scan tool.


ACTION TAKEN (PCM WILL DEFAULT TO)
When DTC P0703 is set, the PCM will not allow 4th gear, cruise control or TCC operation. DTC P0703 does not illuminate the Malfunction Indicator Lamp (MIL).

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

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