Possible causes:
- Faulty fuel pump
- Faulty fuel pump control module
- Faulty wiring
- Faulty ignition switch
- Faulty anti-theft module
Symptoms:
- Limp mode
- Engine may not start
- Engine may run rough
- Check engine light on
Diagnosis:
1. Check the fuel pressure. If the fuel pressure is low, the fuel pump or fuel pump control module may be faulty.
2. Check the wiring to the fuel pump and fuel pump control module. If the wiring is damaged, it may need to be repaired or replaced.
3. Check the ignition switch. If the ignition switch is faulty, it may not be sending the correct signal to the anti-theft module.
4. Check the anti-theft module. If the anti-theft module is faulty, it may not be sending the correct signal to the fuel pump control module.
Repair:
1. Replace the faulty fuel pump or fuel pump control module.
2. Repair or replace the damaged wiring.
3. Replace the faulty ignition switch.
4. Replace the faulty anti-theft module.
