Electrical specifications

Electrical specifications

Connector contact destination

• pin 1: air temperature information
• pin 2: +12V supply
• pin 3: earth
• pin 4: not used
• pin 5: air flow meter information
• pin 6: earth.

Location

The air flow meter (1) is located between the air filter (37) and the air flow rate hose (43).

VACUUM PUMP

Function

The vacuum pump provides the necessary vacuum for operating the following components:

• exhaust gas recirculation valve (EGR)
• exhaust gas recirculation valve pneumatic capsule
• throttle solenoid valve (EGR)
• brake servo (depending on the version).

Description

The vane type vacuum pump is operated directly by the camshaft.

A safety valve incorporated in the pump insulates the brake servo circuit with the engine switched off. The safety valve makes it possible to keep a vacuum reserve in the brake servo for braking several times.

Location

The vacuum pump is located on the cylinder head, at the end of the camshaft, gearbox side.

1. Vacuum pump
2. Safety valve (this valve is incorporated in the outlet connector)