El chip 8945125484 and the 8945123764 are WABCO® SOP-16 ASICs from the 894 512 family (UK manufacture, Continental Silao supply chain). They are NOT interchangeable.
| Feature | 8945123764 | 8945125484 |
|---|---|---|
| Function | PWM power-supply controller, functional equivalent to TL494/IL494 | EBS solenoid power driver/manager, no commercial equivalent |
| Symptom when it fails | 5V rail down, ECU completely dead | All solenoids unresponsive with 24V and 5V present, U0100/Blink 15 |
| Replacement | Industrial TL494I ~$1 USD, verify pinout before soldering | ONLY original NOS — available here, $99 USD shipping included |
| Where it is located | Switching supply area, next to the BTS drivers | Next to the BTS drivers |
8945125484 vs 8945123764: key differences
The table above summarizes why the 8945125484 chip (power driver) must not be confused with the 8945123764 (power-supply controller).
How to tell which one failed?
- Measure 24V at the ISO 7638 connector.
- Measure the 5V rail at the board capacitors. No 5V = supply problem / 8945123764.
- If 5V is present but the solenoids are dead = 8945125484.
Need the correct ASIC?
8945125484 original NOS — stock available, $99 USD shipping included. Don't risk your repair with generic substitutes.
Buy original 8945125484
Buy original 8945125484
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