Subaru SVX 1992 Manual page 561

3-2 [T5FO] AUTOMATIC TRANSMISSION AND DIFFERENTIAL
F: TROUBLE CODE 21 - ATF TEMPERATURE SENSOR -
CONTENT OF DIAGNOSIS : TROUBLE SYMPTOM :
Input signal circuit of TCU to ATF temperature sen- a ATF indicator full time ON
sor is open or shorted .
1 Measure signal voltage input of TCU .
OK
Repair TCU terminal poor contact . (Replace TCU .)
~r Not OK
2 Check harness between TCU and ATF tempera-
Not OK
~
Repair harness .
ture sensor .
~r OK
3 Check ATF temperature sensor .
Not OK
~ Replace ATF temperature sensor .
~r OK
Repair TCU terminal poor contact . (Replace TCU .)
ATF temperature sensor
(in transmisslon)
TCU
a :®
T2
b , B67
BI< (To T2 )
1 2 3 4
b : 867 (B l ac k)
a : 866 (B l ac k)
5678
9101112
1112=415 6 1234 6 910
13141 16
1 7 1 8 1 9 1 10 1 11 1
11121 141 16171819 20
C3-172
Fig . 289
188