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Home >> Chevrolet >> 2020 >> Camaro SS, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (P0443 - P3400) And Symptoms) >> Diagnostic Information and Procedures >> DTC P3400, P3409, P3411, P3412, P3433, P3435, or P3436 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector: Q83 Valve Lifter Oil Solenoid Valve
  3. Ignition - On / Vehicle - In Service Mode
  4. Verify a test lamp turns On between the test points: Ignition circuit terminal 1 & Ground
    • If the test lamp does not turn On and the circuit fuse is OK 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Test for less than 2 ohms between the test points: Ignition circuit terminal 1 & Output terminal@Fuse
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
    • If the test lamp does not turn On and the circuit fuse is open 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Connect the electrical connector: Q83 Valve Lifter Oil Solenoid Valve
    3. Ignition - On / Vehicle - In Service Mode
    4. Replace the component: Fuse
    5. Verify the fuse does not open.
      • If the fuse opens and there are components connected to the circuit - Disconnect a component and repeat procedure starting at step 4. 4
      • If the fuse opens with all components disconnected from the circuit - Repair the short to ground on the circuit.
      • If the fuse does not open after disconnecting a component from the circuit - Replace the component disconnected last.
      • Go to next step: If the fuse does not open with all components connected.
      6. NOTE:

      It may be necessary to use a scan tool control function to operate a component.

    6. Operate the component: Each component on the circuit - One at a time

      Verify the fuse does not open when any of the components are activated.

      • If the fuse opens - Replace the component that caused the fuse to open when activated.
      • Go to next step: If the fuse does not open.
    7. All OK.
    • Go to next step: If the test lamp turns On 
  5. Verify a test lamp does not turn On between the test points: Control circuit terminal 2 & B+
    • If the test lamp turns On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the appropriate electrical connector: K20 Engine Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 2@Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K20 Engine Control Module
    • Go to next step: If the test lamp does not turn On 
  6. Remove - Test Lamp
  7. Engine - Running
  8. Verify the scan tool parameter: Cylinder 2, 5 Deactivation Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the appropriate electrical connector: K20 Engine Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 2@Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K20 Engine Control Module
    • Go to next step: If the specified value 
    9. NOTE:
    • As little as 10 ohms of resistance in a circuit may cause a DTC to set.
    • Performing this test may set additional DTCs.
  9. Connect a 3 A fused jumper wire between the test points: Control circuit terminal 2 & Ignition circuit terminal 1
  10. Verify the scan tool parameter: Cylinder 2, 5 Deactivation Solenoid Valve Control Circuit High Voltage Test Status = Malfunction
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the appropriate electrical connector: K20 Engine Control Module
    3. Test for less than 2 ohms between the test points: Control circuit terminal 2@Component harness &
      • {Q83A Valve Lifter Oil Solenoid Valve - Bank 1} Terminal 2 X3@Control module harness
      • {Q83B Valve Lifter Oil Solenoid Valve - Bank 2} Terminal 1 X3@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K20 Engine Control Module
    • Go to next step: If the specified state 
  11. Ignition/Vehicle - Off
  12. Remove the component: Q83 Valve Lifter Oil Solenoid Valve - The original component that set the DTC
  13. Verify a condition does not exist with the component: Q83 Valve Lifter Oil Solenoid Valve
    • O-Ring - Missing/Visible Damage
    • Engine Oil - Leaking@Harness Connector
    • Screen - Misaligned/Missing/Restricted/Torn
    • Valve - Scored/Visible Damage
    • If a condition exists 

      Replace the component: Q83 Valve Lifter Oil Solenoid Valve

    • Go to next step: If no condition exists 
  14. Swap the two components: Q83 Valve Lifter Oil Solenoid Valve - The original component that set the DTC & Another known good component from the vehicle
  15. Verify the DTC sets at the original component location.
    • If the DTC sets 

      Replace the component: Q83 Valve Lifter Oil Solenoid Valve - The original component that set the DTC

    • Go to next step: If the DTC does not set 
  16. All OK.
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