Connection Diagram - Coolant Hoses, Vehicles With Selective Catalytic Reduction (Scr)
WARNING: This page is about a different car, the 2015 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Blue = large coolant circuit.
Red = small coolant circuit.
Purple = charge air cooler coolant circuit.
Brown = heating circuit.
The arrows show the coolant flow direction.
- Charge Air Cooling Circuit Cooler
- Always replace the coolant after replacing.
- Charge Air Cooler
- Always replace the coolant after replacing.
- Check Valve
- Coolant Pump
- Cylinder Head/Cylinder Block
- Always replace the coolant after replacing.
- Reducing Agent Injector -N474-
- Coolant Expansion Tank
- Cap
- For the coolant reservoir
- Check the pressure relief valve. Refer to COOLING SYSTEM, CHECKING FOR LEAKS .
- Heater Support Pump -V488-
- Check Valve
- Check Valve
- Depending on vehicle equipment
- Heater Core for the Heater
- Always replace the coolant after replacing.
- EGR Cooler
- Always replace the coolant after replacing.
- Checking for leaks. Refer to EGR COOLER, CHECKING FOR LEAKS .
- Check Valve
- Engine Coolant Temperature Sensor -G62-
- Restrictor
- Check Valve
- Coolant Connection
- Coolant Thermostat
- Engine Oil Cooler
- Restrictor
- Check Valve
- Radiator
- Always replace the coolant after replacing.
- Throttle Valve Control Module -J338-
- EGR Valve 1 -GX5-
- With the EGR Potentiometer -G212-
- With EGR Motor -V338-
- Removing and Installing. Refer to EGR Valve 1 -GX5-, REMOVING AND INSTALLING .
- External Engine Heater
- Restrictor
- Charge Air Cooling Pump -V188-