LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2013 >> Impala LS >> Repair and Diagnosis (Single Page) >> Body & Frame >> Ignition Switch/Steering Lock >> Wiring Systems And Power Management - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Ignition Can/Cannot Be Turned Off with Transmission in Any Gear >> Circuit/System Testing
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the Ignition Lock Cylinder Control Actuator. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal B and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • 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 
  3. Ignition ON
  4. Verify that a test lamp illuminates between the Ignition terminal A and ground with the gear shift selector in PARK.
    • If the test lamp does not illuminate and the Ignition fuse is good 
    1. Ignition OFF, remove the test lamp.
    2. Test for less than 2 Ω in the Ignition circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, refer to Power Mode Mismatch .
    • If the test lamp does not illuminate and the Ignition fuse is open 
    1. Ignition OFF, remove the test lamp.
    2. Test for infinite resistance between the ignition circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the Ignition Lock Cylinder Control Actuator
    • If the test lamp illuminates 
  5. Verify that a test lamp does not illuminate between the ignition terminal A and ground with the gear shift selector in NEUTRAL .
    • If the test lamp illuminates 
    1. Ignition OFF, remove the test lamp, disconnect the harness connector at the Automatic Transmission Shift Lock Control Solenoid, ignition ON.
      • If the test lamp illuminates 

        Repair the short to voltage on the ignition circuit

    • If the test lamp does not illuminate 
  6. Test or replace the Automatic Transmission shift lock Control Solenoid.
scientia non olet · About LEMON Manuals