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Home >> Chevrolet >> 2022 >> Camaro LS, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Engine Controls And Fuel - 6.2L (LT1/LT4) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P10E1-P10E4 >> 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. Remove the component: KR171 Engine Control Module Wake-Up Relay@X50A Fuse Block - Underhood
  3. Ignition - On/Vehicle - In Service Mode
  4. Verify a test lamp turns On between the test points:
    • B+ circuit terminal 86 & Ground
    • B+ circuit terminal 87 & Ground
    • If the test lamp does not turn On 

      Replace the component: X50A Fuse Block - Underhood

    • Go to next step: If the test lamp turns On 
  5. Ignition/Vehicle - Off & Remove - Test lamp
  6. Connect a 3 A fused jumper wire between the test points: Ignition circuit terminal 30 & B+ circuit terminal 87
  7. Connect a test lamp between the test points: Control circuit terminal 85 & B+ circuit terminal 86
  8. Ignition - On/Vehicle - In Service Mode
  9. Clear the DTCs.
  10. Perform the scan tool control function: Ignition On/Start Switch Circuit - On and Off

    Verify the test lamp turns On and Off.

    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    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 85@ Relay Socket & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points: Control circuit terminal 85@Relay Socket & The other end of the circuit@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
    • If the test lamp is always 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 85@Relay Socket & 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 turns On and Off 
  11. Test or replace the component: KR171 Engine Control Module Wake-Up Relay
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