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Home >> Chevrolet >> 2013 >> Spark LS, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> Trunk/Liftgate Lock Malfunction >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2014 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

Liftgate Unlatch Switch

  1. Ignition OFF, disconnect the harness connector at the S46B Liftgate Unlatch Switch.
  2. Test for infinite resistance between the signal terminal 2 and the ground terminal 4 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S46B Liftgate Unlatch Switch.

    • If infinite resistance 
  3. Test for infinite resistance between the signal terminal 3 and the ground terminal 4 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S46B Liftgate Unlatch Switch.

    • If infinite resistance 
  4. Test for less than 2 Ω between the signal terminal 2 and the ground terminal 4 with the switch in the Lock position.
    • If 2 Ω or greater 

      Replace the S46B Liftgate Unlatch Switch.

    • If less than 2 Ω 
  5. Test for less than 2 Ω between the signal terminal 3 and the ground terminal 4 with the switch in the Unlock position.
    • If 2 Ω or greater 

      Replace the S46B Liftgate Unlatch Switch.

    • If less than 2 Ω 
  6. All OK

Liftgate Lock Actuator

  1. Ignition OFF, disconnect the harness connector at the M14B Door Lock Actuator-Liftgate.
  2. Install a 25 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the M14B Door Lock Actuator-Liftgate should perform the LOCK and UNLOCK function.
    • If the actuator does not perform the LOCK and UNLOCK function 

      Replace the M14B Door Lock Actuator-Liftgate.

    • If the actuator performs the LOCK and UNLOCK function 
  3. All OK