Test TC-121B: Fuel System 2/1 Lean
NOTE:
Perform TEST TC-121A: FUEL SYSTEM 2/1 LEAN before proceeding. For connector terminal identification, see CONNECTOR IDENTIFICATION . For component location and wiring diagram, see WIRING DIAGRAMS article.
- Inspect all related wiring and connectors for damage. Repair wiring and connectors as necessary and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES . If wiring and connectors are okay, go to next step.
- Perform each test in order listed in REPAIRING FUEL SYSTEM LEAN TESTS table. If a test passes, continue to next test until problem is located.
REPAIRING FUEL SYSTEM LEAN TESTS
| Description | Perform Test |
|---|---|
| Fuel Pressure | NTC-5A |
| Ignition System | NTC-2A |
| Engine Coolant Temperature Sensor | NTC-6A |
| MAP Sensor | NTC-8A |
| Engine Mechanical Systems | NTC-13A |