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Home › Cadillac › 2016 › ELR › Repair and Diagnosis › Hybrid/Electric Powertrain › Electric Converters and Controllers › Hybrid/EV Control System › Diagnostic Information and Procedures › DC Power Conversion Test › Circuit/System Testing

Circuit/System Testing

NOTE:

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

NOTE:

If a carbon pile tester is available, refer to With Carbon Pile Tester section.

With Carbon Pile Tester

  1. Vehicle OFF.
  2. Connect a carbon pile tester to the C1 Battery.
  3. Vehicle ON, turn all accessories off. Observe the voltage reading on the tester and the Hybrid Powertrain Control Module Ignition 1 Signal parameter in the 14 V Power Module data list. The voltage should read between 12.6-15.5 V.
  4. Adjust the carbon pile tester so that the Hybrid Powertrain Control Module Low-Voltage Circuit Current parameter in the 14 V Power Module data list is reading 160 A.
  5. Verify the voltage reading remains between 12.6-15.5 V.
    • If not within the specified range 

      Replace the K1 14 V Power Module.

    • If within the specified range 
  6. All OK

Without Carbon Pile Tester

  1. Vehicle ON.
  2. Verify the scan tool Hybrid Powertrain Control Module Ignition 1 Signal parameter continually increases when controlling the Hybrid Powertrain Control Module 14 V Power Module Setpoint from 10-80% with a scan tool. It may take up to 10 s for battery voltage to stabilize between each setpoint change.
    • If the battery voltage does not continually increase 

      Replace the K1 14V Power Module.

    • If the battery voltage continually increases 
  3. All OK.
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