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Circuit/System Testing

NOTE:

When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

  • P14 passenger air bag disable indicator
  • K36 inflatable restraint sensing and diagnostic module
  1. Ignition OFF.
  2. Disconnect the harness connector at the S48A multifunction switch - instrument panel.
  3. Test for less than 10 Ω between the ground circuit terminal 7 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  4. Connect a test lamp between the control circuit terminal 4 and ground.
  5. Ignition ON.
  6. Occupy the passenger seat, buckle and unbuckle the passenger seat belt, the test lamp should turn OFF and ON while changing between buckled and unbuckled.
    • If the test lamp is always on 
    1. Ignition OFF, disconnect the harness connector at the K36 inflatable restraint sensing and diagnostic module, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1V or greater, repair the short to voltage on the circuit.
      • If less than 1V, replace the K36 inflatable restraint sensing and diagnostic module.
    • If the test lamp is always off 
    1. Disconnect the harness connector at the K36 inflatable restraint sensing and diagnostic module.
    2. Test for infinite resistance between the seat belt switch signal circuit terminal 45 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in each control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K36 inflatable restraint sensing and diagnostic module.
    • If test lamp turns on and off while changing between the commanded states 
  7. Replace the S48A multifunction switch - instrument panel.
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