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Home >> Cadillac >> 2014 >> ELR >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Diagnostic Information and Procedures >> DTC P0C4F: Drive Motor 2 Position Exceeded Learning Limit >> Circuit/System Verification

Circuit/System Verification

  1. Vehicle ON.
  2. Verify DTC P0A45, P0A46, P0C57, P0C58, P0C61, P0C62, or P1B04 is not set.
    • If none of the DTCs are set 
  3. Verify DTC P0C4F is not set.
    • If the DTC sets 
      NOTE:

      Reprogramming the T6 Power Inverter Module will initialize a wide angle learn. Using the SPS Replace and Program option will force the controllers within the T6 Power Inverter Module to be reprogrammed, even if current software is up to date.

    1. Perform each of the operations listed below one at a time until the fault is corrected.
      1. Program the T6 Power Inverter Module using the SPS Replace and Program option.
        2. NOTE:

        Check for physical damage on the position sensor and drive motor and replace any damaged component first.

      2. Replace the B228B Drive Motor 2 Position Sensor, and if the DTC still sets, program the T6 Power Inverter Module using the SPS Replace and Program option.
      3. Replace the M15B Drive Motor 2, and if the DTC still sets, program the T6 Power Inverter Module using the SPS Replace and Program option.
      4. Replace and program the T6 Power Inverter Module.
    2. Repeat the DTC check in step 3.
    • If the DTC does not set 
  4. All OK.
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