Main relay, engine control system (229)
| Main relay, engine control system (229) |
| Location |
Main relay, engine control system (229)
| Main task |
Power supply to engine management system components.
| Type |
Relay.
| Connection |
| 229 pin no. | Signal type | Description |
| 30 | Power supply, +30 | Power supply to the relay contact from fuse 27 (342) via crimp connection 217. |
| 85 | Control | Relay coil control. Grounded by control module, E39, pin 72(A) to activate the main relay. |
| 86 | Power supply, +30 | Power supply to the relay contact from fuse 27 (342) via crimp connection 217. |
| 87 | Output, B+ | Relay contact output. Supplies control module, E39 (590) via crimp connection 216 and fuse 5 in the underhood electrical centre (727). |
When the ignition is turned to "ON", ECM grounds pin 72 (A) and the main relay operates. Main relay pin 87 supplies via crimp connection 216 and fuse 5:
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)
EGR solenoid unit (606).
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