PRE-RELEASE
Main relay, engine management system (229), EDC16
| Main relay, engine management system (229), EDC16 |
| Location |
Main relay, engine control system (229)
| Main task |
Power supply to engine management system components.
| Type |
Relay.
| Connection |
| Pin No. | Signal type | Description |
| 30 | Power supply, +30 | Relay switch's power supply from fuse 1 (342). |
| 85 | Control | Relay coil's control. Grounded by ECM pin 72(B) to activate the main relay. |
| 86 | Power supply, +30 | Relay switch's power supply from fuse 1 (342). |
| 87 | Output, B+ | Relay switch's output. |
When the ignition is switched "ON", ECM pin 72 (B) grounds and the main relay pulls. Main relay pin 87 supplies:
Control module, EDC16 (595B)
Control module, glow plug (596)
Charge air solenoid valve (179a)
Heating element, oxygen sensor (271)
Actuator, combustion circulation (403)
Throttle body actuator (604)
Solenoid valve, EGR (606).
