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Circuit/System Testing

NOTE:

You must perform the Circuit/System Verification  before proceeding with Circuit/System Testing.

  1. Ignition OFF.
  2. Test for less than 2 Ω between the G13 Generator housing and battery negative terminal.
    • If 2 Ω or greater 

      Repair the open/high resistance in the circuit.

    • Go to next step: If less than 2 Ω 
  3. Ignition OFF, disconnect the X2 harness connector at the G13 Generator.
  4. Verify a test lamp illuminates between the G13 Generator B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF, remove the test lamp.
    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, 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, remove the test lamp.
    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, test or replace the G13 Generator.
    • Go to next step: If the test lamp illuminates 
  5. Ignition OFF, disconnect the X1 harness connector at the G13 Generator.
  6. Verify a test lamp illuminates between the G13 Generator B+ circuit terminal 2 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF, remove the test lamp.
    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, 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, remove the test lamp.
    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, test or replace the G13 Generator.
    • Go to next step: If the test lamp illuminates 
  7. Disconnect the X1 harness connector at the X50A Fuse Block - Underhood.
  8. Test for less than 1 V between the control circuit terminal 8 at the X50A Fuse Block - Underhood and ground.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • Go to next step: If less than 1 V 
  9. Test for infinite resistance between the control circuit terminal 8 at the X50A Fuse Block - Underhood and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • Go to next step: If infinite resistance 
  10. Test for less than 2 Ω in the control circuit end to end.
    • If 2 Ω or greater 

      Repair the open/high resistance in the circuit.

    • Go to next step: If less than 2 Ω 
  11. Test or replace the G13 Generator
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