Engine Temperature Below 59°F (15°C)
- Turn ignition on and check the cold start injectors for any leakage. Crank the engine for a few revolutions. Injectors should spray while engine cranks. DO NOT operate starter any longer than necessary.
- If injectors do not spray, crank engine and check for battery voltage at cold start injector supply (White/Pink) cable. If voltage is present, check ground connections and wiring harness connectors at cold start injectors. Repair as necessary. If no defects are found, injectors are faulty and must be replaced.
- Crank engine and check for battery voltage at terminal No. 87 of cold start relay. If voltage is present, check wiring harness between relay and cold start injectors and repair as necessary.
- Crank engine and check for battery voltage at terminal No. 30 of cold start relay. If no voltage is present, check supply wire from pump relay and repair as necessary. If voltage is present, relay is not being energized or contacts are faulty.
- Crank engine and check for battery voltage at terminal No. 86 of cold start relay. If voltage is present, relay is not being energized or contacts are faulty. If no voltage, repair supply wire from starter circuit.
- Crank engine and check for battery voltage at terminal No. 85 of cold start relay. If voltage is present and relay is not energizing, there is a problem with thermo time switch circuit. Disconnect wiring harness from terminal No. 85 and jump terminal No. 85 to ground. Relay should now energize. If not, relay is faulty and must be replaced.
- If relay energizes, check for battery voltage at terminal No. 87 of cold start relay. If no voltage is present at terminal No. 87, the contacts of relay are faulty and relay must be replaced. Reinstall cold start injectors and all cables or connectors.