Work Procedure

Always perform "Zero point reset" using CONSULT when removing and installing the passenger seat or servicing the occupant classification system, including removing/installing or replacing the OCS control unit and sensors. If zero point reset is not performed the OCS may not operate normally, which may increase the risk of serious injury in a collision. "Zero point reset" is an initializing procedure for occupant detection sensor that must be performed when replacing or removing and installing passenger seat. If "Zero point reset" is not performed, the initialization is incomplete and Occupant Detection System does not operate normally.

NOTE:

• When "Zero point reset" is performed once after removal and installation of passenger seat, CONSULT displays "complete".
• When reinstalling passenger seat after removal, the initial value for occupant detection sensor changes, and Occupant Detection System does not operate normally.
• Always perform "Zero point reset" after performing the work as per the following:
  • Reinstallation of passenger seat.
  • Installation of passenger seat that is "Zero point reset" complete.
  • Installation of passenger seat that is "Zero point reset" in complete.

1. PERFORM ZERO POINT RESET 
   1. CONSULT
      1. Perform "Zero point reset".
         NOTE: When performing "Zero point reset", be careful of the items described as per the following:

         • Perform "Zero point reset" after installing passenger seat to the vehicle
         • Do not put any objects on passenger seat
         • Do not apply excessive vibration to the vehicle
         • Do not touch the vehicle
         • Do not tilt the vehicle
      2. Select "Start" on "Zero point reset function" screen from "Work support" mode of "OCCUPANT DETECTION".
      3. "Zero point reset" starts.

   >>

   GO TO 2.

2. CONFIRMATION OF SETTING 
   1. CONSULT
      1. Proceed to "Zero point reset function" screen from "Work support" mode of "OCCUPANT DETECTION".
      2. Check that "Complete" or "Incomplete" is displayed on "Zero point reset status".
      CAUTION:

      • "Complete" is displayed on "Zero point reset current status" if the seat is reinstalled by seat removal and installation, or "Zero point reset" is already performed.
      • "Zero point reset current status" displays "Incomplete" if a new seat is installed. When placing ignition switch ON without performing "Zero point reset", front passenger air bag OFF indicator turns ON. When "Zero point reset" is performed, front passenger air bag OFF indicator turns OFF.
      • Air bag warning lamp blinks in user mode only.
      • Air bag sensor unit does not record whether or not zero point reset is performed.

   Is condition "ALREADY PERFORMED"?

   YES>>

   Print out "Zero point reset current status" screen. Inspection End.

   NO>>

   Check condition as per the following, and perform "Zero point reset" again:

   • Passenger seat is occupied by an object.
   • Excessive vibration is applied while performing "Zero point reset".
   • Occupant detection system is malfunctioning.
     NOTE: If "Incomplete" is displayed on "Zero point reset current status", "Zero point reset" is not completed normally. Check the condition as per the following and perform "Zero point reset" again:
   • Passenger seat is occupied by an object.
   • Excessive vibration is applied while performing "Zero point reset".
   • Occupant detection system is malfunctioning.