Test Preparation

DESCRIPTION
Freeze Frame Data allows access to emission related values from specific generic Parameter Identifications (PIDs). These values are stored the instant an emission related Diagnostic Trouble Code (DTC) is stored in Continuous Memory. This provides a snapshot of the conditions that were present when the DTC was stored. Once one set of freeze frame data is stored, this data will remain in memory even if another emission related DTC is stored. There are no fuel system DTCs for the 7.3L diesel. When a DTC associated with the freeze frame is erased or a Powertrain Control Module (PCM) memory reset is performed, new freeze frame data can be stored again. In the event of multiple emission related DTCs in memory, always note the DTC for the freeze frame data. LOAD, RPM and Vehicle Speed Sensor (VSS) are the only parameters used for the 7.3L Diesel; all other parameters are to be ignored.

NOTE: This procedure is written assuming the use of a New Generation STAR (NGS) Tester. If a generic OBD II scan tool is used, it will be necessary to follow the instructions supplied by the manufacturer of the scan tool.

Freeze Frame Data Table:

ACCESSING FREEZE FRAME PID DATA
- Perform the necessary vehicle preparation and visual inspection.
- Connect scan tool to Data Link Connector (DLC).
- Select NEW VEHICLE, YEAR & MODEL.
- Select VEHICLE & ENGINE SELECTION menu (optional).
- Select year, engine, model with the appropriate qualifier, if needed (i.e., transmission, 49 States, California).
- Follow operating instructions from the menu.
- Select GENERIC OBD II FUNCTIONS.
- Press CONT button if all OBD II monitors are NOT complete.
- Turn key ON.
- Select FREEZE FRAME PID REQUEST