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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).