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DIAGNOSIS AND TESTING - FUEL HEATER The fuel heater element only operates between 8°C (46°F) and 24°C (76°F). CONDITION POSSIBLE CAUSES CORRECTION Fuel Heater Inoperative Open or shorted battery positive Test and repair circuit as Open or shorted ignition positive Test and repair circuit as Open or shorted fuel heater relay Test and repair circuit as Open or shorted fuel heater relay Test and repair circuit as Faulty fuel heater relay Test and replace as necessary. Faulty fuel heater Test and replace as necessary. Faulty ECM Test and replace as necessary. REMOVAL (1) The Fuel Heater is part of the Fuel Filter/Wa- ter Separator. Refer to the Fuel Filter/Water Separa- INSTALLATION (1) The Fuel Heater is part of the Fuel Filer/Water Separator. Refer to the Fuel Filter/Water Separator 14a - 16 FUEL DELIVERY RG FUEL HEATER (Continued) |