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Circuit/System Testing

NOTE:

Use the schematics and connector end views to identify the device's accessory wake up serial data 2 circuit terminals.

  1. Vehicle OFF, all access doors closed, all vehicle systems OFF, and all keys at least 3 meters (9.8 feet) away from vehicle. Disconnect the X1 harness connector at the T18 battery charger. It may take up to 2 minutes for all vehicle systems to power down.
  2. Vehicle in Service Mode.
  3. Verify that a test lamp illuminates between the accessory wake up serial data 2 circuit terminal F 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 infinite resistance between the T18 battery charger wake up circuit terminal F X1 and the K114B Hybrid/EV Powertrain Control Module 2 wake up circuit terminal 69 X2.
      • If infinite resistance, repair the open/high resistance in the accessory wake up serial data 2 circuit.
      • If less than infinite resistance, replace the K114B Hybrid/EV Powertrain Control Module 2.
    • If the test lamp illuminates 
  4. Replace the T18 battery charger.
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