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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Power Door Lock System) >> Diagnostic Information and Procedures >> Door Lock Indicator Malfunction (Left Rear, Right Rear) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector:A23LR Door Latch Assembly - Left RearorA23RR Door Latch Assembly - Right Rear
  3. Ignition - On / Vehicle - In Service Mode
  4. Verify the scan tool parameter:
    • Left Rear Child Security Lock Switch = Inactive
    • Right Rear Child Security Lock Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector:X7@K9 Body Control Module
    3. Test for infinite resistance between the test points:
      • A23LR Door Latch Assembly - Left RearSignal circuit terminal 4@Component harness & Ground
      • A23RR Door Latch Assembly - Right RearSignal circuit terminal 2@Component harness & 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 specified state 
  5. Connect a 3 A fused jumper wire between the test points:
    • A23LR Door Latch Assembly - Left RearSignal circuit terminal 4 & Ground circuit terminal 3
    • A23RR Door Latch Assembly - Right RearSignal circuit terminal 2 & Ground circuit terminal 3
  6. Verify the scan tool parameter:
    • Left Rear Child Security Lock Switch = Active
    • Right Rear Child Security Lock Switch = Active
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector:X7@K9 Body Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:
      • A23LR Door Latch Assembly - Left RearSignal circuit terminal 4@Component harness & Ground
      • A23RR Door Latch Assembly - Right RearSignal circuit terminal 2@Component harness & 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:
      • A23LR Door Latch Assembly - Left RearSignal circuit terminal 4@Component harness & Terminal 12 X7@Control module harness
      • A23RR Door Latch Assembly - Right RearSignal circuit terminal 2@Component harness & Terminal 18 X7@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
    • Go to next step: If the specified state 
  7. Test or replace the component:A23 Door Latch Assembly
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