Basic EEC Trouble Shooting
- Perform basic fuel system and ignition system checks, to ensure there is gas and spark.
- Remove air cleaner assembly and inspect all vacuum and pressure hoses for proper connection to fittings, or any broken, cracked or pinched conditions.
- Inspect EEC sub-system harness for proper connections to EGR solenoid valves.
- Check for any loose or detached connectors or broken or detached wires. Ensure all terminals are completely seated.
- Repair items as required and replace air cleaner.
- Check battery charge, cable connections and main electrical wiring.
- Test resistance of all sensors and solenoids, using values given in EEC III COMPONENT RESISTANCE VALUES Chart. Be sure to disconnect component from circuit before checking resistance.
EEC III COMPONENT RESISTANCE VALUES
| Component | Specification | |
|---|---|---|
| Crankshaft Position (CP) Sensor | ||
| Wire Colors | Gry - Dk Blue | |
| Resistance (Ohms) | 100-640 | |
| Distributor Position (DP) Sensor | ||
| Wire Colors | Gry - Dk Blue | |
| Resistance (Ohms) | 300-800 | |
| Coolant (ECT) Sensor | ||
| Wire Colors | Lt Green/Yellow - Black/White | |
| Resistance (Ohms) | 1100-8000 | |
| Air Charge Temp (ACT) Sensor | ||
| Wire Colors | Lt Green/Purple - Black/White | |
| Resistance (Ohms) | 1700-60,000 | |
| Throttle Position (TP) Sensor - Closed Throttle | ||
| Wire Colors | Orange/White - Black/White | |
| Resistance (Ohms) | 3000-5000 | |
| Throttle Position (TP) Sensor - Closed Throttle | ||
| Wire Colors | Dk Green/Lt Green - Black/White | |
| Resistance (Ohms) | 550-1100 | |
| Throttle Position (TP) Sensor - Wide Open Throttle | ||
| Wire Colors | Dk Green/Lt Green - Black/White | |
| Resistance (Ohms) | More than 2100 | |
| EGR Control Solenoid | ||
| Wire Colors | Red - Yellow | |
| Resistance (Ohms) | More than 30 | |
| EGR Vent Solenoid | ||
| Wire Colors | Red - Dk Green | |
| Resistance (Ohms) | More than 30 | |
| TK Solenoid | ||
| Wire Colors | Red - Red/Lt Green | |
| Resistance (Ohms) | More than 45 | |
| TAB Solenoid | ||
| Wire Colors | Red - White/Red | |
| Resistance (Ohms) | 45-90 | |
| TAD Solenoid | ||
| Wire Colors | Red - Lt Green/Black | |
| Resistance (Ohms) | 45-90 | |
| Fuel Pump Relay | ||
| Wire Colors | Red - Tan/Lt Green | |
| Resistance (Ohms) | More than 40 | |
| By-Pass Ballast Resistor | ||
| Wire Colors | N/A | |
| Resistance (Ohms) | Less than 3 | |