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Home >> Chevrolet >> 2020 >> Camaro SS, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System - Diagnostic Information And Procedures (B053A-B3949) >> Diagnostic Information and Procedures >> DTC B3415 >> Circuit/System Testing

Circuit/System Testing

    NOTE:

    When replacing a headlamp leveling sensor it is necessary to perform the Suspension Position Sensor Calibration.

  2. Ignition OFF, disconnect the harness connector at the appropriate B152 Suspension Position Sensor, ignition ON.
  3. Verify a test lamp illuminates between the low reference circuit terminal 2 and B+.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the harness connector at the K26 Headlamp Control Module.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K26 Headlamp Control Module.
    • Go to next step: If the test lamp illuminates 
  4. Ignition ON.
  5. Test for 4.8 - 5.2 V between the 5 V reference circuit terminal 1 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the K26 Headlamp Control Module.
    2. Test for infinite resistance between the 5 V reference circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the 5 V reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K26 Headlamp Control Module.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the K26 Headlamp Control Module, ignition ON.
    2. Test for less than 1 V between the 5 V reference circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K26 Headlamp Control Module.
    • Go to next step: If between 4.8 - 5.2 V 
  6. Verify the appropriate scan tool Leveling Position Sensor parameter is less than 5%.
    • If 5% or greater 
    1. Ignition OFF, disconnect the harness connector at the K26 Headlamp Control Module, ignition ON.
    2. Test for less than 1 V between the signal circuit terminal 3 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K26 Headlamp Control Module.
    • Go to next step: If less than 5% 
  7. Install a 3 A fused jumper wire between the 5 V reference circuit terminal 1 and the signal circuit terminal 3.
  8. Engine RUNNING, verify the appropriate scan tool Leveling Position Sensor parameter is greater than 90%.
    • If less than 90% 
    1. Ignition OFF, disconnect the harness connector at the K26 Headlamp Control Module.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K26 Headlamp Control Module.
    • Go to next step: If 90% or greater 
  9. Test or replace the appropriate B152 Suspension Position Sensor.
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