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Circuit/System Testing

Display RPO UAG

  1. Ignition OFF, disconnect the harness connector at the A22 Radio Controls.
  2. Test for less than 10 Ω between the ground circuit terminal 3 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 
  3. Verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good. 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, refer to Power Mode Mismatch .
    • 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 A22 Radio Controls.
    • If the test lamp illuminates. 
  4. Ignition ON.
  5. Test for 2-11.5 V between the serial data circuit terminal 6 and ground.
    • If less than 2 V 
    1. Ignition OFF, disconnect the X1 harness connector at the P17 Info Display Module.
    2. Test for infinite resistance between the serial data circuit 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 the serial data circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the P17 Info Display Module.
    • If greater than 11.5 V 
    1. Ignition OFF, disconnect the X1 harness connector at the P17 Info Display Module. Ignition ON.
    2. Test for less than 1 V between the serial data circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the P17 Info Display Module.
    • If between 2-11.5 V 
  6. Test or replace the A22 Radio Controls.
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