Component Location
General Description

Electronically controlled diesel engine has high fuel efficiency therefore, heat loss through wall or head of cylinders after combustion is much more less than that of gasoline engine. This characteristic increases power generation and fuel efficiency however it keeps engine coolant from rising fast on the other hand. so, warming efficiency in winter decreases.

ECM controls the heater relay1 and 2 under conditions which the coolant temperature is below 70℃ and engine speed is over 700 rpm.

※ Prohibition conditions of heater relay control : Coolant temperature above 70℃, Engine speed below 700 rpm.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Voltage monitoring

● Heater Relay circuit

● Heater Relay component

Enable Conditions

● IG KEY "ON"

Threshold Value

● Short to GND, Short to battery

Diagnostic Time

● 1.0 sec

Fail Safe

Fuel Cut

NO

EGR Off

NO

Fuel Limit

NO

MIL

NO

Schematic Diagram
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Schematic Diagram
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Яндекс.Метрика