ABS warning lamp on always

model: Terracan (HP)	model year: 2004	mileage: 30250 km
Diagnosis: 2900cc	Fuel: Gasoline	T/A all

Subject: ABS warning lamp on always – Wheel speed sensor.

1) Condition:

1. The warning lamp illuminates.( C1200FL wheel speed sensor- Open and short circuit).
2. When releasing the brake pedal, the RPM increases.

2) Cause:

1. Abnormal wheel speed sensor.

3) Diagnosis:

1. Scan tool check.
   = C1200 Front wheel speed sensor open/short
2. Check the current data(driving test)
   = The intermittent poor data input ( Front left wheel speed sensor) is found.
3. Connector is broken when checking the front left (F/L) wheel speed sensor.
4. Parts of wheel speed sensor are normal(13 kilo ohms – 16 kilo ohms)

4) Repair Guide:

• Cut the FL wheel sensor connector wiring and solder it after replacing the abnormal connector with a normal one.
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