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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1775 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P0615 >> Circuit/System Testing
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Circuit/System Testing

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  1. Ignition OFF, disconnect the STRTR relay.
  2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ω between the relay ground circuit terminal 85 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Connect a test lamp between the control circuit terminal 86 and the ground circuit terminal 85. Turn the ignition to the start position. The test lamp should turn ON for no longer than 10 seconds when the ignition is in the START position, and OFF in all other positions.
    • If the test lamp is always on, test the control circuit for short to voltage. If the circuit tests normal, replace the ECM.
    • If the test lamp is always off, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
  4. If all circuits test normal, test or replace the STRTR relay.
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