CLAS AC 5247 Mode D'emploi page 31

AC 5247
READER DEFAULT CODE OBDII
• Mode $01 - Identifies the Powertrain information and shows current data available to the
scan tool. This data includes: DTCs set, status of onboard tests and vehicle data such as
engine RPM, temperatures, ignition advance, speed, air flow rates, and closed loop status
for fuel system.
• Mode $02 - Displays Freeze Frame data. Same data as in mode 1, but it was captured and
stored when a malfunction occurred and a DTC was set. Some of the PIDs for mode one
is not implemented in this mode. Mode $03 - Displays the type of powertrain or emission
related DTCs stored by a 5-digit code identifying the faults. There may be more than one
response message if there are more trouble codes than will fit in the data bytes of the
response message, or if there are more than one ECU computer responding.
• Mode $04 - Used to clear DTCs and Freeze Frame data. This clears all diagnostic trouble
codes that may be set including freeze frame data and readiness monitors.
• Mode $05 - Oxygen Sensor Test Results. This mode displays the oxygen sensor monitor
screen and the test results gathered about the oxygen sensor.
There are ten numbers available for diagnostics:
1. $01 Rich-to-Lean O2 sensor threshold voltage
2. $02 Lean-to-Rich O2 sensor threshold voltage
3. $03 Low sensor voltage threshold for switch time measurement
4. $04 High sensor voltage threshold for switch time measurement
5. $05 Rich-to-Lean switch time in ms
6. $06 Lean-to Rich switch time in ms
7. $07 Minimum voltage for test
8. $08 Maximum voltage for test
9. $09 Time between voltage transitions in ms
• Mode $06 - Non-Continuously Monitored Systems test results. There are typically a
minimum value, a maximum value, and a current value for each non-continuous monitor.
This data is optional, and it is defined by a given vehicle make if it's used.
• Mode $07 - Request for DTCs (pending) from Continuously Monitored Systems after a
single driving cycle has been performed to determine if repair has fixed a problem. This
is used by service technicians to verify repair was performed properly and after clearing
diagnostic trouble codes.
• Mode $08 - This Special Control Mode requests control of the on-board system, test, or
component bi-directionally (where applicable) This mode is manufacturer specific.
• Mode $09 - Reports vehicle information. This information includes vehicle VIN number and
calibration information stored in the vehicle ECUs.
• Mode $10 -- Request Emission-Related Diagnostic Trouble Codes with Permanent Status.
This mode is required for all emissions-related DTCs. The presence of permanent DTCs at an
inspection without the MIL illuminated is an indication that a proper repair was not verified
by the onboard monitoring system.