Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Pontiac Aztek AWDFACTORY OEM SERVICE PROCEDURE
Test Description
The numbers below refer to step numbers in diagnostic procedures.
- 1
System Check must be performed before proceeding with diagnostic procedures. Failure to perform System Check will result in misdiagnosis. - 3
The scan tool will command PCM to turn ON fuel pump and AF ECM to turn OFF AF fuel pump relay. - 4
Fuel pump prime terminal is located in underhood fuse block. - 5
Lock-off solenoid relay is controlled by PCM Fuel Pump Relay Control circuit.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.