New ABS sensor but still C1230

[FrankT99]

2003 Ford Explorer Sport Trac

Hello,
The ABS light is on (C1230). I changed the rear ABS sensor and checked fuses (Fuse 9: 7.5A and Fuse 35: 5A). Fuses are both OK.
My (limited) scan tool says, before and after the ABS sensor change: 'C1230 - Wheel Speed Sensor Rear Center Input Circuit Malfunction'.
I erased the code with my scan tool. Or better I tried it. The light doesn't go off. It stays on. Immediately after erasing the scan tool shows: 'Erase Codes - Comment sent - Codes remaining: 1'.
Sorry for asking but I lack experience:
How long do I have to drive so that the ABS light goes off?
Should the ABS light disappear for some time after erasing it till it is back on?
Did I do something wrong or...it is a broken wire?
Thank you.

 

[Mbrooks420]

I’d check the wiring and the connection itself. You can also do an ohm check on the sensor.

 

[FrankT99]

What's the resistance of the rear wheel speed sensors on a 2003 Ford Explorer Sport Trac?

Where is the second connector of the ABS-sensor harness? The harness has on one side the connector to the ABS sensor (on top of the rear axle). Where is the second connector of the harness?
Thank you.