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DTC Detection Logic

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

With CONSULT-III

DTC DETECTION LOGIC CHART

CONSULT-III name DTC DTC detecting condition Repair order
OCCUPANT SENS C/U [UNIT FAIL] B1017 The OCS control unit is malfunctioning.
  1. Replace the RH front seat cushion assembly. Do not disassemble the seat cushion assembly.
B1020
B1021
OCCUPANT SENS [UNIT FAIL] B1018 The OCS sensor mat is malfunctioning.
OCCUPANT SENS [OTHER FAIL] B1019 The OCS is malfunctioning.
OCCUPANT SENS C/U [COMM FAIL] B1022 Communication between the OCS control unit and the air bag diagnosis sensor unit is interrupted.
  1. Visually check the wiring harness connection.
  2. Replace the harness if it has visible damage.
  3. Replace the RH front seat cushion assembly. Do not disassemble the seat cushion assembly.
  4. Replace the air bag diagnosis sensor unit.

Without CONSULT-III

FLASH PATTERN REFERENCE CHART

<Occupant classification system>
Flash pattern Repair order
G04916690Courtesy of NISSAN MOTOR CO., U.S.A.
  1. Visually check the wiring harness connection.
  2. Replace the harness if it has visible damage.
  3. Replace the RH front seat cushion occupant classification system control unit assembly.
  4. Replace the air bag diagnosis sensor unit.
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