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Drive Cycle Procedure: Notes

NOTE: Disconnecting battery will reset memory. DO NOT  disconnect battery during and after drive cycle procedure. Vehicle speed and engine speed detected by ECM/PCM may differ from that indicated by speedometer and tachometer. Check vehicle speed and engine speed during drive cycle procedure using scan tool. If OBD-II system check is not completed during a drive cycle procedure, OBD-II system detects a malfunction or drive cycle procedure was not completed correctly.

  1. 1

    Connect scan tool. Start engine. Select GENERIC OBDII FUNCTIONS. Select ON BOARD SYSTEM READINESS mode. Check OBDII system check condition. If scan tool displays ALL TESTS ARE COMPLETE, drive cycle procedure does not need to be performed. If scan tool does not display ALL TESTS ARE COMPLETE, go to next step.

  2. 2

    Select PID/DATA MONITOR. Select RFCFLAG and press START. If RFCFLAG status is YES, go to next step. If status is NO, perform DRIVE CYCLE-MODE 1.

  3. 3

    Select ON BOARD SYSTEM READINESS mode. If EVAPORATIVE PURGE SYSTEM check status is YES, go to next step. If check status is NO, perform DRIVE CYCLE-MODE 4.

  4. 5

    Select ON BOARD SYSTEM READINESS mode. If OXYGEN SENSOR HEATER check status is YES, go to next step. If check status is NO, perform DRIVE CYCLE-MODE 3.

  5. 6

    Select ON BOARD SYSTEM READINESS mode. If OXYGEN SENSOR check status is YES, go to next step. If check status is NO, perform DRIVE CYCLE-MODE 3.

  6. 7

    Select ON BOARD SYSTEM READINESS mode. If CATALYST check status is YES, no further procedure is required. If check status is NO, perform DRIVE CYCLE-MODE 3.
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