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Home >> Kia >> 2021 >> Sorento EX, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System Diagnosis (Except HEV) (3 Of 4) >> DTC B1490-00: OCS (Occupant Classification System) Defect >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

G13666023Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "OFF".
  2. Disconnect OCS ECU connector.
  3. Ignition "ON".
OCS ECU connector 6 (ON/START Input) Chassis ground - Approx. 14.9V
  1. Ignition "OFF".
  2. Disconnect OCS ECU connector.
OCS ECU connector 3 (ground) Chassis ground - Approx. below 1Ω

Good 

No Good 

CAN communication Line Inspection
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "ON".
OCS ECU connector 5 (C-CAN high) Chassis ground - Fig.1
OCS ECU connector 4 (C-CAN low) Chassis ground -
  1. Ignition "OFF".
  2. Connect all module connectors related to P-CAN.
OCS ECU connector 5 (C-CAN high) OCS ECU connector 4 (C-CAN low) Approx. 60Ω
  1. Ignition "OFF".
  2. Disconnect ECM/PCM and ICU connectors.
ICU (component side) 20 (C-CAN high) ICU (component side) 19 (C-CAN low) Approx. 120Ω
  1. Ignition "OFF".
  2. Disconnect all module connectors related to P-CAN.
  3. Ignition "ON".
OCS ECU connector 5 (C-CAN high) Chassis ground - 0V
OCS ECU connector 4 (C-CAN low) Chassis ground - 0V
  1. Ignition "OFF".
  2. Disconnect all module connectors related to P-CAN.
OCS ECU connector 5 (C-CAN high) Chassis ground - ∞ (infinity)Ω
OCS ECU connector 4 (C-CAN low) Chassis ground - ∞ (infinity)Ω
G13666024Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good