Fuel Injector --, Checking
Includes:
Cylinder 1 Fuel Injector -N30-
Cylinder 2 Fuel Injector -N31-
Cylinder 3 Fuel Injector -N32-
Cylinder 4 Fuel Injector -N33-
Cylinder 5 Fuel Injector -N83-
Cylinder 6 Fuel Injector -N84-
General Description
The Fuel Injectors -- are controlled by the Engine Control Module -J623- and are mounted normally in the cylinder head. The fuel injectors spray high-pressure atomized fuel directly into the combustion chamber.
Special tools and workshop equipment required
- Multimeter.
- Wiring Diagram.
- Scan Tool.
- LED Test Lamp.
Test requirements
- Fuses OK.
- Battery voltage OK.
- Switch OFF all electrical and electronic accessories.
- Vehicles with Auto. Transmission, ensure Selector Lever position is in "P".
- Vehicles with Man. Transmission, ensure Shifter Lever position is in "N" with Parking Brake applied.
- Coolant Temperature: ≥ 80° C.
- Observe all safety precautions: SAFETY PRECAUTIONS
.
- View clean working conditions: CLEAN WORKING CONDITIONS
.
- For Hybrid vehicles refer to: HIGH VOLTAGE SYSTEM GENERAL WARNINGS
.
Test Procedure
| Step |
Procedure |
Result / Action to Take |
| 1 |
- PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK
.
-- Was Complaint verified? |
-- YES:
-- NO:
- GATHER more information from customer about the complaint.
|
| 2 |
- IGNITION: OFF.
- DISCONNECT: Harness connector from suspect Fuel Injector --.
- CHECK: Suspect Fuel Injector -- component connector terminals 1 to 2 for resistance (refer to the appropriate system wiring diagram for proper terminal locations).
- SPECIFIED VALUE: 0.5 - 15 Ω (@ approx. 20° C).
-- Was Value obtained? |
-- YES:
-- NO:
- REPLACE: Suspect Fuel Injector -- (s). Refer to appropriate repair information.
- GO TO: Step 4
|
| 3 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate repair information.
- CHECK: Suspect Fuel Injector -- harness connector terminal 1 to the Engine Control Module - J623- (refer to the appropriate system wiring diagram for proper terminal locations).
- CHECK: Suspect Fuel Injector -- harness connector terminal 2 to the Engine Control Module - J623- (refer to the appropriate system wiring diagram for proper terminal locations).
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Were Values obtained? |
-- YES:
- REPLACE: Suspect Fuel Injector -- for a mechanical condition. Refer to appropriate repair information.
- GO TO: Step 4
-- NO:
- PERFORM: Visual Inspection of wiring and component.
- CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals.
- REPAIR: Faulty wiring or connector.
- GO TO: Step 4
|
| 4 |
- Final Procedure
- Perform a road test to verify repair.
-- Does the original DTC return? |
-- YES:
- CHECK: Engine Control Module -J623- harness connector for any damaged, pushed-out pins.
- REPAIR: As necessary.
- Clear the DTC's. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY
.
- Repair is complete. Generate Readiness Code. Refer to READINESS CODE
.
- Return vehicle to Customer.
- If all electrical connections are OK:
- REPLACE: Engine Control Module -J623-. Refer to appropriate repair information.
- Repair is complete. Generate Readiness Code. Refer to READINESS CODE
.
- Return vehicle to Customer.
-- NO:
- Perform the diagnostic procedure for any DTC's.
- If no DTC's return the repair is complete.
- Return vehicle to customer.
|