Vacuum Pump Control Unit Component Description - GF43.05-P-1210KJE
MODEL 453.091/391/491 with ENGINE 780
Location
The brake booster vacuum pump control unit (N65/3) is installed in the engine compartment directly above the transmission.
Task
The brake booster vacuum pump control unit regulates the vacuum supply for the brake booster and has the following tasks:
Reading in of sensors and signals
Input factors are read in by means of the following connections:
- Direct line
- LIN EL
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.
Output of signals and actuation of components
Initial parameter are output over the following connections:
- Direct line
- LIN-EL
Input and output signals
The brake booster vacuum pump control unit evaluates the following input signals and issues the corresponding output signals:
- Direct input signals
- Direct output signals
- LIN input signals
- LIN output signals
| Input factors over a direct line | Initial parameters over a direct line | Supplemental information |
|---|---|---|
| Circuit 30 | - | - |
| Terminal 15 | - | - |
| Circuit 31 | - | - |
| - | + Vacuum pump | - |
| - Vacuum pump | - | - |
| - | + Brake vacuum sensor 2 | - |
| - Brake vacuum sensor 2 | - | - |
| Signal from brake vacuum sensor 2 | - | - |
| - | + Brake vacuum sensor 1 | - |
| - Brake vacuum sensor 1 | - | - |
| Brake vacuum sensor signal 1 | - | - |
| Input factors via electric drive LIN | Output factors via electric drive LIN | Supplemental information |
|---|---|---|
| Electric drive control unit (N127) | Electric drive control unit (N127) | - |
Structure
The brake booster vacuum pump control unit consists of a plastic housing with two plug connectors and an internal control unit.
Ground connection
The "circuit 31" ground connection occurs via a ground line.
Voltage supply
The brake booster vacuum pump control unit is supplied with a power from "circuit 30 fused" and, with the ignition ON, from "circuit 15 fused".
| Designation | Unit | Values | Tolerance range | Comment |
|---|---|---|---|---|
| Brake booster vacuum pump control unit (N65/3) | ||||
| Supply voltage | V | 13.5 | - | - |
| Voltage limits | V | 4...8 | - | - |
| Reverse polarity protection | - | - | - | Yes |
| Wiring diagram for vacuum pump control unit | PE43.05-P-2000-97BEA |