Fuel Delivery and Air Induction: Testing and Inspection

Test 1 - 2:

Test 3 - 6:

Test 7 - 9:

SYMPTOM:
CHECKING FUEL DELIVERY

POSSIBLE CAUSES
- Fuel pump relay
- Fuel pressure out of specs
- Restricted fuel supply line
- Fuel pump inlet strainer plugged
- Fuel pump module
- Fuel delivery system operation
- Fuel pump relay fused B+ circuit
- (A141) Fuel pump relay output circuit open
- (Z1) Fuel pump ground circuit open/high resistance
- Fuel pump module