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Circuit/System Testing

NOTE:

Use the schematics and connector end views to identify the device's ground, B+, and serial data circuit terminals.

  1. Ignition OFF, all access doors closed, all vehicle systems OFF, and all keys at least 3m (9.8ft) away from vehicle. It may take up to 2 min for all vehicle systems to power down. Disconnect the harness connector at the B218R Side Object Sensor Module - Right.
  2. Test for less than 10Ω between each ground circuit terminal and ground.
    • If 10Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2Ω in the ground circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, repair the open/high resistance in the ground connection.
    • If less than 10Ω 
  3. Ignition ON.
  4. If equipped, verify a test lamp illuminates between each B+ circuit terminal and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2Ω in the B+ circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, verify the fuse is not open and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the B218R Side Object Sensor Module - Right.
    • If the test lamp illuminates 
  5. Ignition ON.
  6. If equipped, test for at least 6V between the communication enable circuit terminal and ground.
    • If less than 6V 
    1. Ignition OFF, disconnect the harness connectors at the B218L Side Object Sensor Module - Left.
    2. Test for infinite resistance between the communication enable circuit terminal and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2Ω in the communication enable circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, replace the B218L Side Object Sensor Module - Left.
    • If 6V or greater 
  7. Ignition OFF, all access doors closed, all vehicle systems OFF, and all keys at least 3m (9.8ft) away from vehicle. It may take up to 2 min for all vehicle systems to power down. Disconnect the harness connector at the B218L Side Object Sensor Module - Left.
  8. Test for less than 1V between each serial data circuits and ground.
    • If 1V or greater 

      Repair the short to voltage in the serial data circuit.

    • If less than 1V 
  9. Test for infinite resistance between each serial data circuits and ground.
    • If less than infinite resistance 

      Repair the short to ground in the serial data circuit.

    • If infinite resistance 
  10. Test for infinite resistance between 2 serial data circuits.
    • If less than infinite resistance 

      Repair the short together between the serial data circuits.

    • If infinite resistance 
  11. Test for less than 2Ω in each of the serial data circuits end to end between the B218L Side Object Sensor Module - Left and the B218R Side Object Sensor Module - Right.
    • If 2Ω or greater 

      Repair the open/high resistance in the serial data circuit.

    • If less than 2Ω 
  12. Replace the B218R Side Object Sensor Module - Right.
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