CITROEN C5 Handbook page 206

Vacuum pump.
- Connect the tool [1] on the vacuum pump (3).
- Start the engine.
- The vacuum should be 0.8 bar at 750 rpm.
Boost vacuum regulation electrovalve.
- Connect the tool [1] between the electrovalve (2) and the valve (1).
Compare readings with the values in the table below
Boost pressure regulation valve.
- Connect the tool [1] on the valve (1). (Grey marking on pipe).
- Appy a vacuum of 0.8 bar. The rod "a" should move 12 ± 2 mm.
- Rod "a" should be moved 12 mm.
«Swirl» control electrovalve.
- Connect the tool [1] as an adaptor between the electrovalve (4) and the control diaphragm of the «Swirl» (5).
- Compare readings with the values in the table below :
«Swirl» control diaphragm.
- Connect the tool [1] on the control diaphragm of the «Swirl» (5).
- Apply a vacuum of approx. 0.6 Bar ; the pin (6) should be at the end stop, at «b».
CHECKS : AIR SUPPLY CIRCUIT
Engine : 4HX
Engine speed (rpm)
780
4000
Engine speed (rpm)
780
4000
203
Vacuum (Bar)
0.6 Bar
0.25 Bar
Vacuum (Bar)
0.6 Bar
0.25 Bar
C5