DTC B1CB2: Occupant Classification-ECU Parameter Table Incompatible; DTC B2212: Occupant Classification-ECU Internal Failure; DTC B2250: Occupant Classification-ECU not Parameter Flash Required; DTC B2262: Occupant Classification-ECU Electrostatic Discharge Event Detected: Diagnosis

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958. Refer to "HOW TO CONNECT THE SCAN TOOL ."
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is the CAN bus line found to be normal?
  - YES: Go to Step 2.
  - NO: Repair the CAN bus line (Refer to DIAGNOSIS .
STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set.
1. Erase the DTC.
2. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
3. Check if DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is the DTC set?
  - YES: Replace the passenger seat cushion frame assembly (Refer to FRONT SEAT ASSEMBLY .
  - NO: There is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .