Webasto SmarTemp Control fx 2.0 - Electrical Connections and Components; SmarTemp Connector Pin-out; Relay Connection Requirements

SmarTemp Control fx 2.0 Installation – Operation Instructions
2
Electrical Connections
SmarTemp Connector Pin-out
Pin Number
Description
Wire Color
1
+12 / 24V
Red
2
GND
Brown
3
Heater Output
Black
4
*
Diagnostic Blink Code
Green
For terminal removal use: Molex terminal removal tool
P/N: 11-03-0044 (http://www.molex.com
)
*Diagnostic Blink Code functionality does not apply to most coolant heaters. Refer to the Error Code section for additional
information.
Relay Connection: (If applicable)
Heaters requiring higher amperage ON/OFF signal will require a relay to accommodate different specifications. If the
connected heater requires more than a 1A ON/OFF signal to start, use the pin-out of a standard relay as described below.
Relay
Output
Relay Pin 30 Battery (B+) power source (Fused according to required heater amperage)
Relay Pin 85 Ground
Relay Pin 86 Heater ON/OFF signal wire from pin 3 of SmarTemp Control fx harness.
Relay Pin 87 Switched ON/OFF signal to heater.
Component Description
(Webasto) ON/Off Button
Rotary Knob
LCD Screen
Screw Cap
Status Indicator Light(s)
Selection Button
*Micro USB Service Port
* The micro USB service port is not used for heater diagnostic purposes on SmarTemp Control fx 2.0.
LCD Screen Legend
Mode (Auto or Manual)
Auto Mode
Manual Mode
TERMINAL INSERT
SIDE OF CONNECTOR
Runtime Remaining
Timer Active
Auto Mode
Current Day
Current Time
Heater ON
Current Day
Current Time
Heater ON
Manual Mode
Runtime Remaining
NOTE: When Auto is visible, timers are enabled
Current Day
Day and Time
Auto or Manual
Mode