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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 5ET50 (MKE)) >> Diagnostic Information and Procedures >> Hybrid Low Mode Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S3 Transmission Shift Lever. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 Ω between the vehicle harness connector terminal 2 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the vehicle harness at the ground connection.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the ground connection.
    • If less than 10 Ω 
  3. Ignition ON.
  4. Test for 11 - 13 V at the vehicle harness connector between signal circuit terminal 3 and ground.
    • If not between 11 - 13 V 
    1. Ignition OFF, disconnect the connector at the BCM.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground in the circuit.
      • If infinite resistance.
    3. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the BCM.
    • If between 11 - 13 V 
  5. Ignition OFF, connect the harness connector at the S3 Transmission Shift Lever.
  6. Ignition ON, S3 Transmission Shift Lever in the M or manual mode position.
  7. Test for voltage between the S3 Transmission Shift Lever connector signal circuit terminal 3 and ground, by back probing the connector, for the conditions listed below.
    • 2.0 - 4.6 V - Plus button pressed
    • 5.1 - 7.3 V - Minus button pressed
    • 8.0 - 10.6 V - Neither button pressed
    • If voltage values are not correct 

      Replace the S3 Transmission Shift Lever.

    • If voltage values are correct 
  8. Replace the K9 Body Control Module.
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