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Circuit/System Testing

NOTE:

Use the schematics and connector end views to identify the devices' high voltage energy management communication enable circuit terminals.

  1. Vehicle OFF, disconnect the X1 harness connector at the T18 Battery Charger.
  2. Vehicle in Service Mode.
  3. Verify that a test lamp illuminates between the high voltage energy management communication enable circuit terminal G X1 and ground.
    • If the test lamp does not illuminate 
    1. Vehicle OFF, disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
    2. Test for less than 2 Ω in the high voltage energy management communication enable circuit end to end between the T18 Battery Charger terminal G X1 and the K114B Hybrid/EV Powertrain Control Module 2 terminal 48 X2.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K114B Hybrid/EV Powertrain Control Module 2.
    • If the test lamp illuminates 
  4. Replace the T18 Battery Charger.
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