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Coolant hose routing on vehicles with 2nd?heat exchanger > < Connection diagram for coolant hoses in vehicles with auxiliary heating, engine code: CCZA

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Connection diagram for coolant hoses in vehicles with auxiliary heating, engine codes: CFFA, CFFB, CFGB
Connection diagram for coolant hoses in vehicles with auxiliary heating, engine codes: CFFA, CFFB, CFGB
  WARNING
There is a risk of burns.
When the engine is warm, the coolant temperature may exceed 100° C. The cooling system is pressurised.
Where necessary, reduce pressure and temperature before commencing repair work.
  Note
t  The coolant circuit must be free of air for the auxiliary heater to heat properly.
t  Bleed coolant circuit every time after opening it!
t  Complete hose routing → Rep. gr.19.
t  The arrows in the illustration show the coolant flow direction.
   
1 - Expansion tank
2 - Valve for deactivating heat exchanger 2 -N317-
q   Electrically controlled
3 - Exhaust gas recirculation (water cooled)
4 - Cylinder head and cylinder block
5 - Retaining valve
6 - Heating heat exchanger
7 - 2. Heating heat exchanger
8 - Heater coolant shut-off valve -N279-
  Note
The heater coolant shut-off valve -N279- is fitted only in vehicles with the auxiliary heating function. Function: When voltage is applied, it switches to the smaller coolant circuit.
Installation location: Secured to the plenum chamber bulkhead in the engine compartment.
q   removing and fitting → Chapter
9 - ATF cooler
10 - Radiator
11 - Engine oil cooler
12 - Coolant circulation pump -V50-
q   removing and fitting → Rep. gr.19
13 - Coolant pump
14 - Circulation pump -V55-
q   removing and fitting → Chapter
15 - Auxiliary heater Thermo Top V
q   removing and fitting → Chapter

   

Coolant hose routing on vehicles with 2nd?heat exchanger > < Connection diagram for coolant hoses in vehicles with auxiliary heating, engine code: CCZA