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Home >> Cadillac >> 2016 >> SRX Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Power Door Lock System And Release Systems >> Diagnostic Information and Procedures >> Liftgate Close Switch Malfunction - DTC B396E >> Circuit/System Testing
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Circuit/System Testing

    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 and All vehicle systems » Off
  2. Disconnect the electrical connector: B70 Liftgate Close Switch
  3. Test for less than 10 Ω between the test points: Low Reference terminal 4 and Ground
    • If 10 Ω or greater 
    1. Disconnect the electrical connector: K39 Liftgate Control Module
    2. Test for less than 2 Ω between the test points: Low Reference terminal 4 at Component harness and Terminal 16 X1 at Control module harness
      • If 2 Ω or greater » Repair the open/high resistance in the circuit.
      • If less than 2 Ω » Replace the component: K39 Liftgate Control Module
    • If less than 10 Ω 
  4. Ignition » On / Vehicle » In Service Mode
  5. Verify the scan tool parameter: Liftgate Rear Close Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle » Off
    2. Disconnect the electrical connector: K39 Liftgate Control Module
    3. Test for infinite resistance between the test points: Signal circuit terminal 3 at Component harness and Ground
      • If less than infinite resistance » Repair the short to ground on the circuit.
      • If infinite resistance » Replace the component: K39 Liftgate Control Module
    • If the specified state 
  6. Connect a 3 A fused jumper wire between the test points: Signal circuit terminal 3 and Low Reference terminal 4
  7. Verify the scan tool parameter: Liftgate Rear Close Switch = Active
    • If not the specified state 
    1. Ignition/Vehicle » Off and Remove » Jumper wire(s)
    2. Disconnect the electrical connector: K39 Liftgate Control Module
    3. Ignition » On / Vehicle » In Service Mode
    4. Test for less than 1 V between the test points: Signal circuit terminal 3 at Component harness and 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: Signal circuit terminal 3 at Component harness and Terminal 3 X1 at Control module harness
      • If 2 Ω or greater » Repair the open/high resistance in the circuit.
      • If less than 2 Ω » Replace the component: K39 Liftgate Control Module
    • If the specified state 
  8. Test or replace the component: S46 Liftgate Handle Switch
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