Subaru SVX 1992 Manual page 567

3-2 (T510) AUTOMATIC TRANSMISSION AND DIFFERENTIAL
I: TROUBLE CODE 25 - ENGINE TORQUE CONTROL SIGNAL -
CONTENT OF DIAGNOSIS :
Engine torque control output signal circuit is open
or shorted.
TROUBLE SYMPTOM :
Excessive shift shock
Not OK
`I Repair ECU (MPFI) terminal poor contact . (Replace
1
Measure signal voltage output of ECU (MPFI).
ECU .)
OK
2
Measure signal voltage input of TCU .
Not OK
Repair or replace harness/connector .
OK
Repair TCU terminal poor contact . (Replace TCU .)
859
B68
ECU it
Y
TCU
(for MPFI)
859 (Ye I I ow)
12 345678910
11211311 14115 1161 11 118 11912 012 11 H
®(BIack)
8
111213F4:0 6
9 1011 1213141516
C3-085
Fig . 293
194