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Home >> Kia >> 2018 >> Niro EX >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System Diagnosis (2 Of 2) (HEV) >> DTC B2502-00: Passenger Airbag Telltale Lamp Failure >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

Fig 1: SRSCM System Circuit
G12331442Courtesy of KIA MOTORS AMERICA, INC.
A/C CONTROL MODULE AND SRSCM HARNESS CONNECTORS SPECIFICATION

Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "OFF".
  2. Disconnect A/C Switch harness connector.
  3. Ignition "ON".
A/C Control Module harness connector 11 (PAB IGN) Chassis ground - Battery Voltage
  1. Ignition "OFF".
  2. Passenger Airbag "ON".
  3. Passenger Airbag OFF Warning Lamp "OFF".
SRSCM harness connector 20 (PAB OFF Warning Lamp) Chassis ground - Over 1.9V
  1. Ignition "ON".
  2. Passenger Airbag "OFF".
  3. Passenger Airbag OFF Warning Lamp "ON".
SRSCM harness connector 20 (PAB OFF Warning Lamp) Chassis ground - Below 1.9V
Good 
  • Check telltale lamp and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF REPAIR " procedure.
No Good 
  • Check airbag fuse, passenger compartment junction block, harness between junction block and SRSCM. Repair as necessary and go to "VERIFICATION OF REPAIR " procedure.