Scan Tool Display (OEM)
NOTE:
OBD-II vehicles have options available in the scan tool DTC mode to display enhanced information available. However, to fully utilize information and procedures requires the use of a Tech 2 scan tool. See scan tool operator's manual for additional information.
The following are Tech 2 scan tool sub-menus in the DTC INFO and SPECIFIC DTC modes:
- DTC SET THIS IGNITION
This parameter indicates if a Diagnostic Trouble Code (DTC) set during the current ignition cycle. The scan tool displays Yes or No. - ENGINE RUN TIME
Scan tool displays hours, minutes and seconds. This displays the amount of engine run time for current ignition cycle. When you cycle ignition off, timer resets to zero. - FAIL COUNTER
Scan tool displays the amount of times a DTC fails. This parameter is located in the Failure Records list. - FAILURES SINCE FIRST FAIL
Scan tool displays the number of times a DTC failed since the first failure. - LOOP STATUS
Scan tool displays Open or Closed. Closed loop indicates PCM is controlling fuel delivery according to Oxygen (O2) sensor voltage. In open loop, PCM ignores the oxygen sensor voltage and bases amount of fuel to be delivered on Throttle Position (TP) sensor, engine coolant, and Mass Airflow (MAF) sensor inputs only. - MILEAGE SINCE DTC CLEARED
This parameter indicates mileage accumulated since an emission DTC cleared. PCM stores this mileage in the Freeze Frame/Failure Records buffers. Scan tool displays Kilometers or Miles. - MILEAGE SINCE FIRST FAILURE
This parameter indicates mileage accumulated since an emission DTC first failed. PCM stores this mileage in the Freeze Frame/Failure Records buffers. Scan tool displays Kilometers or Miles. - MILEAGE SINCE LAST FAILURE
This parameter indicates mileage accumulated since an emission DTC last failed. PCM stores this mileage in the Freeze Frame/Failure Records buffers. Scan tool displays Kilometers or Miles. - MILEAGE SINCE MIL REQUEST
This parameter indicates mileage accumulated since PCM requested MIL to illuminate. PCM stores this mileage in the Freeze Frame/Failure Records buffers. Scan tool displays Kilometers or Miles. - NOT RUN COUNTER
Scan tool displays number of times a DTC has not reached the failure parameters in order to run since the first failure. - PASS COUNTER
Scan tool displays number of times a DTC has passed, since the first failure. Scan tool displays 0-65,535 counts. - PCM RESET
This parameter indicates when the internal PCM resets. Scan tool displays YES when an internal PCM reset occurred. Scan tool displays NO under the normal operating conditions. - WARM-UPS W/O EMISSION FAULTS
This parameter counts the number of warm up cycles without an emission fault present. The counter increases to 255 and rolls back to zero unless a fault occurs. If a fault occurs, the counter changes back to zero until the fault is corrected. Manually clearing fault with a scan tool or disconnecting power to the PCM also resets the counter to zero. - WARM-UPS W/O NON-EMISSION FAULTS
This parameter counts the number of warm up cycles without a non-emission fault present. The counter increases to 255 and rolls back to zero unless a fault occurs. If a fault occurs, the counter changes back to zero until the fault is corrected. Manually clearing fault with a scan tool or disconnecting power to the PCM also resets the counter to zero.