Auxiliary/parking heater (597)
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Auxiliary/parking heater (597)
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Auxiliary/parking heater (597)
An auxiliary heater is used to quickly obtain a comfortable cabin climate.
Diesel heater with combustion chamber, heat exchanger, combustion fan, glow plug and integrated control module. Heating capacity, full effect 5000 W, half effect 2400 W.
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Pin No.
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Signal type
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Description
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1
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+30
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From UEC
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2
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Ground
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G31
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3
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I-bus
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6
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PWM pulse
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Connected to fuel pump
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The auxiliary heater control module uses the following information
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Information
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Value/Unit
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Off
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Description
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Engine running
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ON/OFF
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ECM
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ECM must first send the signal "engine running" for the auxiliary heater to start
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Remaining fuel quantity
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%
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ECM
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The fuel tank must be >12% full for the auxiliary heater to start
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Outside temperature
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°C/°F
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BCM
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The outside temperature must be under 8°C (46°F) for the auxiliary heater to start
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Internal heater
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°C/°F
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Water temperature in heater
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The water temperature in the heater must be under 80°C (176°F) for the auxiliary heater to start
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The auxiliary heater control module transmits the following information
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Information
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Value/Unit
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Used by
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Description
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Diagnostic message
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No unit
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Tech2
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Error message from auxiliary heater
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Display text
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No unit
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SID
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Consumed fuel
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litres
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ICM, IPC
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In order for auxiliary heater fuel consumption to be part of the total fuel consumption
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Coolant temperature in heater
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°C/°F
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BCM, ACC
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For ACC to be able to regulate heating in the car cabin
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