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SYMPTOMS DIAGNOSIS Symptom Possible Causes Smell of diesel fuel. Check cabin heater system integration in vehicle’s fuel system. Check Heater does not achieve full load op- Check cabin heater operation with DRBIII T scan tool and replace components as required. Continuous white smoke from heater Check cabin heater operation with DRBIII T scan tool and replace components as required. White smoke is typical in extreme weather Heater can not be switched off. Check cabin heater operation with DRBIII T scan tool and replace components as required. Heater does not operate. Diagnosis cabin heater control module using the DRBIII T scan tool and the procedures listed in Vehicle Performance under Cabin Heater Loss of coolant (Leakage) or heater Inspect coolant hoses for leakage, kinks or loose hose connection. Loss of fuel (dripping). Check cabin heater system integration in vehicles fuel system. Check EXHAUST TUBE REMOVAL WARNING: There is a potential danger of skin burns (1) Raise and support the vehicle while taking note of the location of the flexible exhaust tube section. (2) Remove the exhaust clamp at the flexible pipe and steel pipe connection (Fig. 1). VA CABIN HEATER 24 - 105 |