4E-55 ABS:
DTC "44" (C1644): Wheel Speed Sensor Signal Malfunction (R)
• Poor contact in the rear wheel speed sensor coupler
• Faulty rear wheel speed sensor, etc.
Troubleshooting
Step
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)
(A), (B)
Is the clearance OK?
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?
Possible Cause
Action
I718H1450026-01
I718H1450064-01
Yes
Go to Step 2.
Go to Step 3.
B718H14504012
No
Adjust the clearance.
Clean or replace the
sensor rotor.