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Home >> Chevrolet >> 2014 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Hybrid/EV System Energy Storage) >> Diagnostic Information and Procedures >> DTC P1A5E or P1A5F: Battery Energy Control Module Ignition On/Start Switch >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Verify the scan tool Hybrid Powertrain Control Module Ignition 1 parameter is 0 V with the ignition OFF and B+ with the ignition ON.
    • If not 0 V with the ignition OFF and B+ with the ignition ON 

      refer to Circuit/System Testing (below).

    • If 0 V with the ignition OFF and B+ with the ignition ON 
  3. Verify the scan tool Battery Energy Control Module Power Mode parameter matches the actual vehicle power mode as the ignition is turned ON and OFF.
    • If the parameter does not match the actual power mode 

      refer to Circuit/System Testing (below).

    • If the parameter matches the actual power mode 
  4. All OK.
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