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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B297B or B297C: Driver Door Open Switch Circuit >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. 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 electrical connector: A23D Door Latch Assembly - Driver
  3. Test for less than 10 ohms between the test points: Ground circuit terminal D & Ground
    • If 10 ohms or greater 
    1. Disconnect Ground Connection
    2. Test for less than 2 ohms between the test points: Ground circuit terminal D @ Component harness & Ground Connection
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • If less than 10 ohms 
  4. Ignition - On/Vehicle - In Service Mode
  5. Verify the scan tool parameter: Driver Door Ajar Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: K84 Keyless Entry Control Module
    3. Test for infinite resistance between the test points: Signal circuit terminal C @ 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 C & Ground circuit terminal D
  7. Verify the scan tool parameter: Driver Door Ajar Switch = Active
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector: 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 C @ 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 ohms between the test points: Signal circuit terminal C & Signal circuit terminal 9 X1 @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K84 Keyless Entry Control Module
    • If the specified state 
  8. Test or replace the component: A23D Door Latch Assembly - Driver
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