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Home >> Saab >> 1994 >> 9000 Hatchback L4-2290cc 2.3L DOHC >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Pinout Values and Diagnostic Parameters >> With Mark IV ABS System >> Component Input / Output Signals >> Output Signals >> Valve Block

Valve Block







Valve Block
The Electronic Control Unit (ECU) receives + 12 V on pin 3.
- This also provides current to the valves on the valve block, pins 1 and 10.

The valves are grounded, if necessary, through the valve block by a Pulse Width Modulation (PWM) signal.

The frequency depends on how long the valves are activated.
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