CITROEN C4 2004 Handbook page 250

PROHIBITED OPERATIONS: BOSCH HDi DIRECT INJECTION SYSTEM
Engine: RHR
Cleaning.
- The use of high pressure cleaners is prohibited.
- Do not use compressed air.
Fuel supply circuit.
- Required fuel: diesel.
Electrical circuit.
- Swapping injection ECUS between two vehicles will render it impossible to start either vehicle.
- It is forbidden to supply a diesel injector with 12 volts.
Fuel high pressure pump.
Do not separate the fuel high pressure pump (1) from the following components:
- Sealing ring (a) (no replacement parts).
- High pressure outlet connector (b) (will cause a malfunction).
PS: HDi = High pressure Direct diesel injection.
B1HP1K9C
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