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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 1.8L (LUW, LWE) - DTC P0010 To DTC P0442) >> Diagnostic Information and Procedures >> DTC P0411: Secondary Air Injection System >> Circuit/System Testing >> Secondary Air Injection Pump Malfunction

Secondary Air Injection Pump Malfunction

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the KR25 Secondary Air Injection Pump Relay.
  2. Verify a test lamp illuminates between the B+ circuit terminal 30 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF
    2. Test for less than 2 Ω in the B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF
    2. Test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Disconnect the harness connector at the G21 Secondary Air Injection Pump.
    4. Test for infinite resistance between the control circuit terminal A and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    5. Test or replace the G21 Secondary Air Injection Pump.
    • If the test lamp illuminates 
  3. Disconnect the harness connector at the G21 Secondary Air Injection Pump.
  4. Ignition OFF and all vehicle systems OFF, it may take up to 2 minutes for all vehicle systems to power down. Test for less than 10 Ω between the G21 Secondary Air Injection Pump 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 
  5. Connect the harness connector at the G21 Secondary Air Injection Pump.
  6. Connect a 40 A EL 36169-HD  between the B+ circuit terminal 30 and the control circuit terminal 87.
  7. Verify the G21 Secondary Air Injection Pump is activated.
    NOTE: To prevent the secondary air injection pump from overheating, do not operate the pump consecutively for greater than 2 minutes. The pump is provided with a thermal protector that will automatically reset when allowed to cool.
    • If the pump does not activate 
    1. Ignition OFF, disconnect the harness connector at the G21 Secondary Air Injection Pump.
    2. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω,
    3. Test or replace the G21 Secondary Air Injection Pump.
    • If the pump activates 
  8. Test or replace the KR25 Secondary Air Injection Pump Relay.
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