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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Electrical >> Horns >> Horn System >> Diagnostic Information and Procedures >> DTC B010E >> Circuit/System Testing

Circuit/System Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: P48 Pedestrian Alert Sound Speaker
  3. Test for less than 10 ohms between the test points: Low Reference terminal 1 & Ground
    • If 10 ohms or greater 
    1. Disconnect the electrical connector: K132 Pedestrian Alert Sound Control Module
    2. Test for less than 2 ohms between the test points: Low Reference terminal 1@Component harness & Terminal 8@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K132 Pedestrian Alert Sound Control Module
    • Go to next step: If less than 10 ohms 
  4. Ignition - On / Vehicle - In Service Mode & Transmission in Drive
  5. Test for 5 to 7 V between the test points: Control circuit terminal 2 & Ground
    • If less than 5 V 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K132 Pedestrian Alert Sound Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 2@Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    4. Test for less than 2 ohms between the test points: Control circuit terminal 2@Component harness & Terminal 9@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K132 Pedestrian Alert Sound Control Module
    • If greater than 7 V 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K132 Pedestrian Alert Sound Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 2@Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K132 Pedestrian Alert Sound Control Module
    • Go to next step: If between 5 and 7 V 
  6. Test or replace the component: P48 Pedestrian Alert Sound Speaker