Subaru SVX 1992 Manual page 553

3-2 [T5B0]
AUTOMATIC TRANSMISSION AND DIFFERENTIAL
B : TROUBLE CODE 12 - DUTY SOLENOID B -
CONTENT OF DIAGNOSIS :
Output signal circuit of duty solenoid B is open or
shorted .
TROUBLE SYMPTOM :
No "locking-up" (after engine warm-up)
1 Measure signal voltage output emitted from
Not OK
Repair TCU terminal poor contact. (Replace TCU .)
TCU .
OK
2
Check harness between TCU and duty solenoid
Not OK
Repair harness.
j OK
Not OK
3 Check duty solenoid B's ground line .
Repair ground line .
OK
Not OK
4 Check duty solenoid B . ho Replace duty solenoid B .
j OK
Repair TCU terminal poor contact . (Replace TCU.)
a :
B66
c : 068
Duty solenoid B
(I n tr" ansm I ss l on)
T2
814 (To T2 )
W51H
13R
c :
B68 (B l ac k)
a : ® (B I ac k)
1234
6 8
1 234 6 8 12345678910
910111
910111 1314151 111213141516171819 0
1314151
C3-168
Fig. 285
TCU
180