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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Battery, Charging System And Starting System - Except Hybrid) >> Diagnostic Information and Procedures >> Stop/Start System Malfunction >> Circuit/System Testing >> Auto Stop Mode Switch Indicator Circuit Malfunction

Auto Stop Mode Switch Indicator Circuit Malfunction

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the harness connector at the S48C Multifunction Switch - Instrument Panel, ignition ON.
  2. Connect a test lamp between the control circuit terminal 9 and B+.
  3. Verify the test lamp turns ON and OFF when commanding the Start/Stop Select Switch Indicator by applying and unapplying ground to the signal circuit terminal 11.
    • If the test lamp is always ON 
    1. Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module, ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K9 Body Control Module.
    • If the test lamp is always OFF 
    1. Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module, ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance on the circuit.
      • If less than 2 Ω, replace the K9 Body Control Module.
    • If the test lamp turns ON and OFF 
  4. Test or replace the S48C Multifunction Switch - Instrument Panel.
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