ABS: 4E-54
DTC “44” (C1644): Wheel Speed Sensor Signal Malfunction (R)
B817H24504018
Troubleshooting
Possible Cause
• Poor contact in the rear wheel speed sensor coupler
• Faulty rear wheel speed sensor, etc.
Step Action Yes No
1 1) Inspect the clearance between the rear wheel speed
sensor and sensor rotor using the thickness gauge.
Special tool
(A): 09900–20803 (Thickness gauge)
(B): 09900–20806 (Thickness gauge)
Wheel speed sensor – sensor rotor clearance
0.3 – 1.5 mm (0.012 – 0.059 in)
Is the clearance OK?
Go to Step 2. Adjust the clearance.
2 1) Inspect the rear wheel speed sensor rotor for damage
and check that no foreign objects are caught in the rotor
openings.
Is the sensor rotor OK?
Go to Step 3. Clean or replace the
sensor rotor.
(A), (B)
I717H2450011-01
I718H1450064-01
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