Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2019 >> Trax LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B3245 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle - Off
  2. Remove the component: KR95A Liftgate Unlatch Relay
  3. Connect a test lamp between the test points: Control circuit terminal R2-2 & Ground
  4. Ignition - On / Vehicle - In Service Mode
  5. Perform the scan tool control function: Liftgate Unlatch - Unlatch

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5@K9 Body Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal R2-2@Relay Socket & 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 R2-2@Relay Socket & Terminal 11 X5@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5@K9 Body Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal R2-2@Relay Socket & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K9 Body Control Module
    • Go to next step: If the test lamp turns On and Off 
  6. Connect a test lamp between the test points: B+ circuit terminal R2-3 & Control circuit terminal R2-1
  7. Perform the scan tool control function: Liftgate Unlatch - Unlatch

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5@K9 Body Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal R2-1@ Relay Socket & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points: Control circuit terminal R2-1@Relay Socket & Terminal 20 X5@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K9 Body Control Module
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X5@K9 Body Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal R2-1@Relay Socket & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K9 Body Control Module
    • Go to next step: If the test lamp turns On and Off 
  8. Test or replace the component: KR95A Liftgate Unlatch Relay
scientia non olet · About Mike's Workshop Manuals