FixVault
Home › Chevrolet › 2021 › Corvette 2D Convertible › Repair and Diagnosis › Body & Frame › Fixed And MOVEABLE Windows › Diagnostic Information and Procedures › DTC B1A52 › Circuit/System Testing

Circuit/System Testing

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: M63 Sliding Rear Window Motor
  3. Ignition - On/Vehicle - In Service Mode
  4. Test for 5 to 7 V between the test points: Control circuit terminal 1 & Ground
    • If less than 4.9 V 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K23L Folding Top Control Module - Left
    3. Test for infinite resistance between the test points: Control circuit terminal 1 @ 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 1 @ Component harness & Terminal 1 @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K23L Folding Top Control Module - Left
    • If greater than 5 V 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K23L Folding Top Control Module - Left
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 1 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K23L Folding Top Control Module - Left
    • Go to next step: If between 5 and 7 V 
  5. Test for 5 to 7 V between the test points: Control circuit terminal 5 & Ground
    • If less than 4.9 V 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K23L Folding Top Control Module - Left
    3. Test for infinite resistance between the test points: Control circuit terminal 5 @ 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 5 @ 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: K23L Folding Top Control Module - Left
    • If greater than 5 V 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K23L Folding Top Control Module - Left
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 5 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K23L Folding Top Control Module - Left
    • Go to next step: If between 5 and 7 V 
  6. Test or replace the component: M63 Sliding Rear Window Motor
About FixVault