Main Relay

Main Relay
When the ignition is turned to + 54, the Electronic Control Unit (ECU) is activated through pin 53.
- The main relay will also be activated through pin 34.

Activated = 0 V
Non-activated = 12 V with + 54

The Antilock Brake System (ABS) main relay will supply + 12 V to:
- Valve housing pins 1 and 10
- ECU pins 3 and 33
- Pump relay pin 86 on relay

When the main relay is not activated, the ANTI LOCK light is grounded through the main relay to G 15.