Description
(1) pre-post heat box
"a" 11-way black connector
Supplier: BOSCH
Role
The pre-postheating control unit manages the functioning of the preheater plugs in the following phases
- Starting and operating from cold
- Emission standard
The pre-postheating unit contains the following functions
- Protection against overheating
- Protection against excessive voltage
- Self diagnostics forward any faults detected on the glow plugs and/or the electronics inside the unit
Electrical specifications
| description | value |
|---|---|
| nominal supply voltage | 12 V |
| maximum operating temperature | 140 °C |
| channel number | allocation of the tracks of the connector |
|---|---|
| 1 | supply of pre-heating plugs 1 |
| 2 | supply of pre-heating plugs 2 |
| 3 | supply of pre-heating plugs 3 |
| 4 | supply of pre-heating plugs 4 |
| 5 | not used |
| 6 | + ignition on (+IGN) |
| 7 | earth |
| 8 | not used |
| 9 | pre-heating unit diagnostic signal |
| 10 | control for pre-heating unit |
| 11 | battery + |
Programming/initialisation
Not applicable