ABS: 4E-51
7 1) Connect the front wheel speed sensor coupler.
2) Connect three 1.5 V dry cells “a” in series as shown and
make sure that their total voltage is more than 4.5 V.
Measure the current between (+) dry cell terminal and
“12” (B/R) on the ABS control unit coupler.
CAUTION
!
Dry cells connection in reverse polarity is strictly
prohibited. Such a wrong connection will
damage the wheel speed sensor when reverse
power is applied.
Special tool
(A): 09900–25008 (Multi circuit tester set)
(B): 09900–25009 (Needle-point probe set)
Tester knob indication
Current ( , 20 mA)
Normal value
5 – 17 mA
Is the current OK?
Replace the ABS
control unit/HU.
Faulty front wheel
speed sensor
Step Action Yes No
12
DCmA
ABS control unit coupler (Harness side)
“a”
18
10
13
24
16
89
24
25
21
3
(A)
(B)
I905H1450077-01
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