Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Ignition OFF, disconnect the KR26 Secondary Air Injection Solenoid Valve Relay. Ignition ON.
- Verify a test lamp does not illuminate between the control circuit terminal 87 and ground.
- If the test lamp illuminates
Repair the short to voltage on the circuit.
- If the test lamp does not illuminate
- If the test lamp illuminates
- Ignition OFF, connect the KR26 Secondary Air Injection Solenoid Valve Relay.
- Disconnect the harness connector at the Q29 Secondary Air Injection Solenoid Valve. Ignition ON.
- Verify a test lamp does not illuminate between the control circuit terminal 5 and ground.
- If the test lamp illuminates
Test or replace the KR26 Secondary Air Injection Solenoid Valve Relay.
- If the test lamp does not illuminate
- If the test lamp illuminates
- Verify the conditions listed below do not exist:
- Hoses/pipes restricted or blocked upstream of valve
- Hoses/pipes leaking or disconnected
- Damaged or restricted secondary air injection pump
- Damaged secondary air injection check valve
- If a condition exists
Repair or replace the affected component as necessary.
- If none of the conditions exist
- Ignition OFF, remove the Q29 Secondary Air Injection Solenoid Valve.
- Connect the harness connector at the Q29 Secondary Air Injection Solenoid Valve.
- Connect the secondary air injection pipe to the Q29 Secondary Air Injection Solenoid Valve.
- Ignition ON, command the Secondary Air Injection Pump Relay ON with a scan tool. Verify there is NO airflow through the valve.
- If airflow
Replace the Q29 Secondary Air Injection Solenoid Valve.
- If no airflow
- If airflow
- Replace the G21 Secondary Air Injection Pump.