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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 333 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> Exterior Door Handle Switch Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle & All vehicle systems Off
  2. Disconnect the appropriate electrical connector: A24 Door Handle Assembly
  3. Test for less than 10 Ω between the test points: Ground circuit terminal 5 & Ground
    • If 10 Ω or greater 
    1. Disconnect Ground Connection
    2. Test for less than 2 Ω between the test points: Ground circuit terminal 5 @ Component harness & Ground Connection
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  4. Ignition On/Vehicle in Service Mode.
  5. Verify the scan tool parameter: Exterior Door Handle Switch Circuit = Inactive
    • If not the specified state 
    1. Ignition/Vehicle Off.
    2. Disconnect the electrical connector: X2 K84 Keyless Entry Control Module
    3. Test for infinite resistance between the test points: Signal circuit terminal 1 @ Component harness & Ground
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the component: K84 Keyless Entry Control Module
    • If the specified state 
  6. Connect a 3 A fused jumper wire between the test points: Signal circuit terminal 1 & Ground circuit terminal 5
  7. Verify the scan tool parameter: Exterior Door Handle Switch Circuit = Active
    • If not the specified state 
    1. Ignition/Vehicle Off & Remove Jumper wire(s)
    2. Disconnect the electrical connector: X2 K84 Keyless Entry Control Module
    3. Ignition On/Vehicle in Service Mode.
    4. Test for less than 1 V between the test points: Signal circuit terminal 1 @ Component harness & Ground
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    5. Ignition/Vehicle Off.
    6. Test for less than 2 Ω between the test points:
      • A24D Door Handle Assembly - Driver Exterior Signal circuit terminal 1 @ Component harness & Terminal 12 X2 @ Control module harness
      • A24P Door Handle Assembly - Passenger Exterior Signal circuit terminal 1 @ Component harness & Terminal 11 X2 @ Control module harness
      • A24LR Door Handle Assembly - Left Rear Exterior Signal circuit terminal 1 @ Component harness & Terminal 2 X2 @ Control module harness
      • A24RR Door Handle Assembly - Right Rear Exterior Signal circuit terminal 1 @ Component harness & Terminal 1 X2 @ Control module harness
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the component: K84 Keyless Entry Control Module
    • If the specified state 
  8. Test or replace the component: A24 Door Handle Assembly
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