Secondary air injection system components (Emission control - V8)
- Make
- Land Rover
- Model
- Discovery II (UK)
- Section
- Description and operation › Secondary air injection system components
Emission control - V8Secondary air injection system components · page 1 of 6
The ECM connector and pins pertinent for secondary air injection are listed in the following table:
| Connector / Pin No. | Description | Signal type | Control |
|---|---|---|---|
| C0635-23 | Main relay output | Output drive | Switch to ground |
| C0636-4 | Secondary air injection vacuum solenoid valve control | Output, drive | Switch to ground |
| C0636-16 | Secondary air injection pump relay control | Output drive | Switch to ground |
| C0636-21 | Coolant temperature (ECT) sensor | Ground | 0V |
| C0636-22 | Coolant temperature (ECT) sensor | Input signal | Analogue 0 - 5V |
| C0637-20 | MIL "ON" | Output drive | Switch to ground |
Secondary air injection system components
The secondary air injection (SAI) system components (NAS only) are described below:
Secondary air injection (SAI) pump
2
1
| M17 0204 |
1 SAI pump cover 2 Foam filter 3 SAI pump 4 Pressurised air to exhaust manifolds
3
4
Parts & tools for this job For Land Rover Discovery
- PARTExhaust gasketSearch: Land Rover Discovery exhaust gasket
- TOOLPenetrating oilSearch: penetrating oil
- TOOLOBD2 scannerSearch: OBD2 scanner
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