Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1996 1996 Service Manual 1996 LEGACY SUPPLEMENT TROUBLESHOOTING SECTION MSA5T9609A34477
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3-2 [vi-1101 AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7 . Diagnostic Chart with Trou ble Code
7. Diagnostic Chart with Trouble Code
H : TROUBLE CODE 22
- MASS AIR FLOW SIGNAL -
DIAGNOSIS :
Input signal circuit of TCM from ECM is open or shorted .
Not OK
1 . Check trouble code on engine side . ~ Check for cause of trouble in engine .
< Ref. to 2-7 On-Board Diagnostics II System
[T10B0] .*2 >
OK
Not OK
2 . Check harness connector between TCM and Repair TCM connector terminal poor contact .
ECM .
OK
Not OK
3. Check input signal for TCM . ~ * Replace TCM .
OK
Clear memory -> Confirmation test -+ Not OK ->
Repair TCM connector terminal poor contact .
854
TCM
B54 O
9 10 Ill12 1314 U 1516
3132 3343536373839 OG14243G4
123456 V 159 ~0 ~ 1 1 6463 ~46$6 ~ 716 6970 J
1 7 1 8 1 9 1 101 11 1 121 4 5 687 9909192 3949596
B3M0475 I
1 . CHECK TROUBLE CODE ON ENGINE SIDE .
Using Subaru select monitor or OBD-general scan tool,
check trouble code of mass air flow sensor on engine side .
4
AUTOMATIC TRANSMISSION AND DIFFERENTIAL [T7H3] 3-2
7. Diagnostic Chart with Trouble Code
2. CHECK HARNESS CONNECTOR BETWEEN TCM
AND ECM.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and ECM .
3) Measure resistance of harness connector between
TCM and ECM .
Connector & terminal I Specified resistance:
(B54) No. 9 - (B84) No . 47 l 1 S2, or less
4) Measure resistance of harness connector between
123456
TCM and body to make sure that circuit does not short.
B54 7 8 9 01112
Connector & terminal / Specified resistance :
(854) No. 9 - Body 11 MSZ, or more
D
L Q 0>
.0
B3M02248
3. CHECK INPUT SIGNAL FOR TCM .
B54 1) Connect connectors to TCM and ECM .
161514 3 2) Start the engine. (engine idling after warm-up)
1211 10 9H87
3) Measure signal voltage between TCM connector termi-
nal and body.
Connector & terminal / Specified voltage:
D Engine warm-up;
_E)VSj (B54) No. 9 - Body l 0.5 - 1 .22 V
83M0222B
Data link connector 9 Using Subaru select monitor:
(for Subaru select monitor and
OBD-II general scan tool) (1) Connect connectors to TCM and ECM.
(2) Turn ignition switch to OFF.
(3) Connect the Subaru select monitor to data link
/ '/ i connector.
Data link connector
(for Subaru select monitor (4) Turn ignition switch to ON and Subaru select
\,only) monitor switch to ON .
ls%y~ x~/ (5) Start and warm-up the engine.
OBD0145A I
(6) Read data on Subaru select monitor.
(7) Designate mode using function key.
AFM (F15) Function mode: F15
SPECIFIED DATA :
0.5 - 1 .22 V (Engine warm-up)
0 .6V
B3M0370
5
3-2 R7101 AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code
I: TROUBLE CODE 23
- ENGINE SPEED SIGNAL -
DIAGNOSIS :
Engine speed input signal circuit is open or shorted .
TROUBLE SYMPTOM:
" No lock-up (after engine warm-up)
" AT OIL TEMP indicator remains on when vehicle speed
is 0 .
Not OK
1 . Check harness and connector between TCM Repair or replace harness connectors.
and ECM .
OK
OK
2 . Check input signal for TCM . " Repair TCM connector terminal poor contact .
" Replace TCM .
Not OK
Conduct diagnostics for ECM's ignition system .
B54 884
TC M ECM
U
B54 B84
9 10 11 12 1314 1516
3132 33 34 35 36 37 38 39 40 4142 43 44
89
1 1 1 2 1 3 1 4 1 51 6 1581 591 60 1 61 162 63
8
1 7 8 9 10 11 12 84 85 86 87 88 89 90 9192 93 94 95 96
B2M0585
6
AUTOMATIC TRANSMISSION AND DIFFERENTIAL [T7i21 3-2
7 . Diagnostic Chart with Trouble Code
1 . CHECK HARNESS AND CONNECTOR BETWEEN
TCM AND ECM.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and ECM .
3) Measure resistance of harness connector between
TCM and ECM .
Connector & terminal l Specified resistance :
(854) No. 5 - (B84) No. 64 I 1 S2, or less
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short.
Connector & terminal l Specified resistance:
(B54) No . 5 - Body I 1 MSS, or more
OBD0410A I
2. CHECK INPUT SIGNAL FOR TCM.
1) Connect connectors to ECM and TCM.
2) Turn ignition switch ON (with engine OFF)
3) Measure signal voltage for TCM .
Connector & terminal l Specified voltage :
(854) No. 5 - Body I 70.5 V, or more
Data link connector 9 Using Subaru select monitor:
(for Subaru select monitor and
OBD-II general scan tool) (1) Connect connectors to ECM and TCM .
/
(2) Turn ignition switch to OFF.
/ (3) Connect the Subaru select monitor to data link
/' i ~1 i connector .
Data link connector
(for Subaru select monitor (4) Turn ignition switch to ON and Subaru select
\ only) monitor switch to ON .
lqo~ ,/"~///
OBD0145A I
(5) Start and warm-up the engine .
(6) Operate at constant engine speed .
EREV (F06) (7) Read data on Subaru select monitor.
(8) Designate mode using function key.
Function mode: F06
SPECIFIED DATA :
1,500 rpm Same as tachometer reading (in combination
meter)
G3M0727
7
3-2 rr7KO1 AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Ch art with Trouble Code
K: TROUBLE CODE 25
- TORQUE CONTROL SIGNAL -
DIAGNOSIS :
" Torque control signal is not emitted from TCM .
" The signal circuit is open or shorted .
Not OK
1 . Check harness connector between TCM and I Repair or replace harness connectors .
ECM.
OK
J OK
2 . Check output signal for TCM. 1 9 Repair TCM connector terminal poor contact .
Not OK
Repair ECM connector terminal poor contact .
Replace ECM .
B84 B55
ECM 79 F6TCM
B84 B55
12u34 u 56 u 78 u
171819 20 2122 23 24 25 26 2128 29 30
45 46 47 48 49 50 5152 53 54 55 56 57 12345678
7172 73 74 75 76 77 78 79 80 8182 83 1 9 1 101 1 11213141516
82M0598 I
8
AUTOMATIC TRANSMISSION AND DIFFERENTIAL [r7K2] 3-2
7 . Diagnostic Chart with Trouble Code
1 . CHECK HARNESS CONNECTOR BETWEEN TCM
AND ECM.
1 2 3 4a u ss u 7 s u
1718 9 21 2 4 5 1) Turn ignition switch to OFF.
4 6 7 9v51 2 316405
71 2 5 7 0 1 2 1 2) Disconnect connectors from TCM and ECM .
3) Measure resistance of harness connector between
ggq. -jB55 TCM and ECM.
n r_1
1 1 1 21 3 1 41 5 1 61 71 81
9 1 1112131 1516
Connector & terminal l Specified resistance:
(855) No. 16 - (B84) No. 79 / 1 S2, or less
B3M0478A
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short .
Connector & terminal I Specified resistance:
(855) No . 16 - Body l 1 1140, or more
2. CHECK OUTPUT SIGNAL FOR TCM.
1) Connect connectors to TCM and ECM .
2) Turn ignition switch to ON.
3) Measure signal voltage between TCM connector termi-
nal and body.
Connector & terminal l Specified voltage :
(855) No. 16 - Body l 5 f 1 V
9
3-2 [T7L0] AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code
L: TROUBLE CODE 31
- THROTTLE POSITION SENSOR -
DIAGNOSIS :
Input signal circuit of throttle position sensor is open or
shorted .
TROUBLE SYMPTOM :
Shift point too high or too low; engine brake not effected
in "3" range; excessive shift shock; excessive tight corner
"braking"
Not OK
1 . Check harness connector between TCM and j Repair or replace harness connectors .
throttle position sensor .
OK
2. Check throttle position sensor . Not OK Replace throttle position sensor.
OK
OK ~ 9 Repair TCM connector terminal poor contact .
1 3 . Check input signal for TCM .
-~j 9 Replace TCM .
Not OK
Not OK
4 . Check power supply to throttle position ,1 Repair or replace harness connectors .
sensor.
OK
9 Repair TCM connector terminal poor contact .
e Replace TCM .
E13
884
B84 ~~ B56 a~ B54 821 E13
112 34 U 56 U 78 U
171819 20 2122 23 24 25 26 27 28 29 30 1234
45 46 47 48 49 50 5152 53154 1 55156 57 12345678910 123456 5678
7172 73 74 75 76 77 78 79 80 8182 83 1112 1314151617181920 789101112 9101112 1 23
B2M0613
10
AUTOMATIC TRANSMISSION AND DIFFERENTIAL [T7L3] 3-2
7. Diagnostic Chart with Trouble Code
1 . CHECK HARNESS CONNECTOR BETWEEN TCM
AND THROTTLE POSITION SENSOR .
1) Turn ignition switch to OFF.
2) Disconnect connector from TCM and throttle position
sensor.
3) Measure resistance of harness connector between
TCM and throttle position sensor.
Connector & terminal l Specified resistance:
(B54) No. 8 - (E13) No . 2 l 1 S2, or less
(B56) No. 19 - (E13) No. 3 l 1 0, or less
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short.
Connector & terminal I Specified resistance:
(B54) No. 8 - Body l 1 11492, or more
(B56) No. 19 - Body l 1 MS2, or more
2. CHECK THROTTLE POSITION SENSOR .
t 2 3 E13 Measure resistance between throttle position sensor ter-
minals .
Terminals / Specified resistance:
(E13) No. 1 - No. 2 / 0.3 - 0.7 kS2
(Throttle fully closed.)
D 3 - 6 kS2
(Throttle fully open .)
(E13) No. 1 - No. 3 / 3.5 - 6.5 kS2
OBD0510A I
3. CHECK INPUT SIGNAL FOR TCM.
B54
1) Connect connectors to TCM and throttle position sen-
6 5 4 3 2 1
2 1 09 8 7
sor.
2) Turn ignition switch ON (with engine OFF) .
3) Measure signal voltage input emitted from throttle posi-
D tion sensor with accelerator pedal fully depressed .
-V+ Connector & terminal l Specified voltage:
(B54) No. 8 - No. 7 /
0.5 f 0.2 V (Throttle fully closed.)
OBD0503A
4.6 f 0.3 V (Throttle fully open .)
Data link connector e Using Subaru select monitor:
(for Subaru select monitor and
OBD-II general scan tool) (1) Connect connectors to TCM and throttle position
sensor.
(2) Turn ignition switch to OFF.
/,/ i ~ i) (3) Connect the Subaru select monitor to data link
Data link connector
(for Subaru select monitor connector .
\.only) (4) Turn ignition switch to ON and Subaru select
monitor switch to ON .
OBD0145AI
11
3-2 [r7La] AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code
(5) Designate mode using function key.
(6) Read data on Subaru select monitor.
THV (F09) Function mode: F09
SPECIFIED DATA :
0.5 f 0.2 V (Throttle fully closed.)
4.6 f 0.3 V (Throttle fully open.)
[Must be changed correspondingly with accelera-
4 .6V tor pedal operation (from "released" to
83M0383
"depressed" position) .]
4. CHECK POWER SUPPLY TO THROTTLE POSITION
E13 SENSOR .
1) Turn ignition switch to OFF.
2) Disconnect connector from throttle position sensor .
3) Turn ignition switch to ON .
4) Measure power supply voltage to throttle position sen-
sor.
Connector & terminal l Specified voltage:
(E13) No. 1 - Body l 5.12 ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo