1997 SUBARU LEGACY check engine

OBD0432
3. CHECK RESISTOR.
Measure resistance between resistor terminals.
Specified resistance:
(B4) No. 1—No.2/9—15Ω
G3M0111
4. CHECK DUTY SOLENOID A.
Measure resistance between transmission connector
receptacle (on transmission) terminals.
Connector & terminal / Specified resistance:
(T4) No. 7—No. 4 / 1.5—4.5Ω
OBD0425A
5. CHECK OUTPUT SIGNAL EMITTED FROM TCM.
1) Connect connectors to TCM, transmission and resistor.
2) Start and warm-up the engine and transmission.
3) Ignition switch ON (Engine OFF).
4) Move selector lever to“N”.
5) Measure voltage between TCM connector and body
while opening and closing throttle position sensor.
Connector & terminal / Specified voltage:
(B55) No. 8—No. 10 / 1.5—4.0 V (Throttle is
fully closed.)
(B55) No. 8—No. 10 / 1 V, or less (Throttle is
fully open.)
(B55) No. 7—No. 10 / 5—14 V (Throttle is fully
closed.)
(B55) No. 7—No. 10 / 1 V, or less (Throttle is
fully open.)
OBD0145A

Using Subaru select monitor:
(1) Connect connectors to TCM, transmission and
resistor.
(2) Turn ignition switch to OFF.
(3) Connect the Subaru select monitor to data link con-
nector.
(4) Turn ignition switch to ON and Subaru select moni-
tor switch to ON.
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3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

B: TROUBLE CODE 12
—DUTY SOLENOID B—
DIAGNOSIS:
Output signal circuit of duty solenoid B is open or shorted.
TROUBLE SYMPTOM:
No“locking-up”(after engine warm-up)
1. Check harness and connectors between TCM
and duty solenoid B.
OK
Not OK
Repair or replace harness connectors.
2. Check duty solenoid B’s ground line.
OK
Not OK
Repair ground line.
3. Check duty solenoid B.
OK
Not OK
Replace duty solenoid B.
4. Check output signal emitted from TCM.
OK
Not OK

Repair TCM connector terminal poor contact.

Replace TCM.

Repair TCM connector terminal poor contact.
OBD0413




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3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

OBD0607A
4. CHECK OUTPUT SIGNAL EMITTED FROM TCM.
1) Connect connectors to TCM and transmission.
2) Lift-up the vehicle or set the vehicle on free roller.
CAUTION:
On AWD models, raise all wheels off floor.
3) Start and warm-up the engine and transmission.
4) Push the TCS OFF switch to ON. (With TCS models)
5) Move selector lever to“D”and slowly increase vehicle
speed to 75 km/h (47 MPH).
6) Measure voltage between TCM connector terminals.
Connector & terminal / Specified voltage:
(B55) No. 5—No. 10 / 8.5 V, or more (when
wheels are locked-up.)
OBD0607A
7) Return the engine to idling speed and move selector
lever to“N”.
8) Measure voltage between TCM connector terminals.
Connector & terminal / Specified voltage:
(B55) No. 5—No. 10 / 0.5 V, or less
NOTE:
The speed difference between front and rear wheels may
light either the ABS or the ABS/TCS warning light, but this
indicates no malfunctions. When AT control diagnosis is
finished, perform the ABS or the ABS/TCS memory clear-
ance procedure of self-diagnosis system.
or 4-4d [T6D2] or [T9J0].>
OBD0145A

Using Subaru select monitor:
(1) Connect connectors to TCM and transmission.
(2) Lift-up the vehicle or set the vehicle on free roller.
CAUTION:
On AWD models, raise all wheels off floor.
(3) Turn ignition switch to OFF.
(4) Connect the Subaru select monitor to data link con-
nector.
(5) Turn ignition switch to ON and Subaru select moni-
tor switch to ON.
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3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

C: TROUBLE CODE 13
—SHIFT SOLENOID 3—
DIAGNOSIS:
Output signal circuit of shift solenoid 3 is open or shorted.
TROUBLE SYMPTOM:
Ineffective engine brake with shift lever in“3”
1. Check harness and connectors between TCM
and shift solenoid 3.
OK
Not OK
Repair or replace harness connectors.
2. Check shift solenoid 3’s ground line.
OK
Not OK
Repair ground line.
3. Check shift solenoid 3.
OK
Not OK
Replace shift solenoid 3.
4. Check output signal emitted from TCM.
OK
Not OK

Repair TCM connector terminal poor contact.

Replace TCM.

Repair TCM connector terminal poor contact.
OBD0452
OBD0454A
1. CHECK HARNESS AND CONNECTORS BETWEEN
TCM AND SHIFT SOLENOID 3.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and transmission.
3) Measure resistance of harness connector between
TCM and transmission connector.
Connector & terminal / Specified resistance:
(B55) No. 15—(B11)No.1/1Ω, or less
(B55) No. 10—(B11)No.4/1Ω, or less




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3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

OBD0455A
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short.
Connector & terminal / Specified resistance:
(B55) No. 15—Body/1MΩ, or more
(B55) No. 10—Body/1MΩ, or more
G3M0109
2. CHECK SHIFT SOLENOID 3’s GROUND LINE.
Measure resistance between transmission connector
receptacle and transmission case.
Connector & terminal / Specified resistance:
(T4) No. 4—Transmission / 1Ω, or less
G3M0117
3. CHECK SHIFT SOLENOID 3.
Measure resistance between transmission connector
receptacle’s terminals.
Connector & terminal / Specified resistance:
(T4) No. 1—No.4/20—32Ω
B3M0381A
4. CHECK OUTPUT SIGNAL EMITTED FROM TCM.
1) Connect connectors to TCM and transmission.
2) Lift-up or raise the vehicle and support with safety
stands.
CAUTION:
On AWD models, raise all wheels off ground.
3) Start and warm-up the engine and transmission.
4) Idle the engine.
5) Move selector lever to“D”.
6) Measure voltage between TCM connector terminals.
Connector & terminal / Specified voltage:
(B55) No. 15—No. 10 / 9 V, or more
NOTE:
The speed difference between front and rear wheels may
light either the ABS or the ABS/TCS warning light, but this
indicates no malfunctions. When AT control diagnosis is
finished, perform the ABS or the ABS/TCS memory clear-
ance procedure of self-diagnosis system.
or 4-4d [T6D2] or [T9J0].>
25
3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

OBD0447A
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short.
Connector & terminal / Specified resistance:
(B55) No. 13—Body/1MΩ, or more
(B55) No. 10—Body/1MΩ, or more
G3M0109
2. CHECK SHIFT SOLENOID 2’s GROUND LINE.
Measure resistance between transmission connector
receptacle and transmission case.
Connector & terminal / Specified resistance:
(T4) No. 4—Transmission / 1Ω, or less
G3M0120
3. CHECK SHIFT SOLENOID 2.
Measure resistance between transmission connector
receptacle’s terminals.
Connector & terminal / Specified resistance:
(T4) No. 2—No.4/20—32Ω
OBD0445A
4. CHECK OUTPUT SIGNAL EMITTED FROM TCM.
1) Connect connectors to TCM and transmission.
2) Lift-up or raise the vehicle and support with safety
stands.
CAUTION:
On AWD models, raise all wheels off ground.
3) Start and warm-up the engine and transmission.
4) Idle the engine.
5) Move selector lever to“D”.
6) Measure voltage between TCM connector terminals.
Connector & terminal / Specified voltage:
(B55) No. 13—No. 10 / 9 V, or more
NOTE:
The speed difference between front and rear wheels may
light either the ABS or the ABS/TCS warning light, but this
indicates no malfunctions. When AT control diagnosis is
finished, perform the ABS or the ABS/TCS memory clear-
ance procedure of self-diagnosis system.
or 4-4d [T6D2] or [T9J0].>
27
3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

OBD0439A
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short.
Connector & terminal / Specified resistance:
(B55) No. 14—Body/1MΩ, or more
(B55) No. 10—Body/1MΩ, or more
G3M0109
2. CHECK SHIFT SOLENOID 1’s GROUND LINE.
Measure resistance between transmission connector
receptacle and transmission case.
Connector & terminal / Specified resistance:
(T4) No. 4—Transmission / 1Ω, or less
G3M0123
3. CHECK SHIFT SOLENOID 1.
Measure resistance between transmission connector
receptacle’s terminals.
Connector & terminal / Specified resistance:
(T4) No. 3—No.4/20—32Ω
OBD0437A
4. CHECK OUTPUT SIGNAL EMITTED FROM TCM.
1) Connect connectors to TCM and transmission.
2) Lift-up or raise the vehicle and support with safety
stands.
CAUTION:
On AWD models, raise all wheels off ground.
3) Start and warm-up the engine and transmission.
4) Idle the engine.
5) Move selector lever to“D”.
6) Measure voltage between TCM connector terminals.
Connector & terminal / Specified voltage:
(B55) No. 14—No. 10 / 9 V, or more
NOTE:
The speed difference between front and rear wheels may
light either the ABS or the ABS/TCS warning light, but this
indicates no malfunctions. When AT control diagnosis is
finished, perform the ABS or the ABS/TCS memory clear-
ance procedure of self-diagnosis system.
or 4-4d [T6D2] or [T9J0].>
29
3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

OBD0388A
1. CHECK HARNESS AND CONNECTORS BETWEEN
TCM AND ATF TEMPERATURE SENSOR.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and transmission.
3) Measure resistance of harness connector between
TCM and transmission connector.
Connector & terminal / Specified resistance:
(B54) No. 10—(B11)No.5/1Ω, or less
(B56) No. 20—(B11) No. 12 / 1Ω, or less
B3M0220B
4) Measure resistance of harness connector between
TCM and body to make sure that circuit does not short.
Connector & terminal / Specified resistance:
(B54) No. 10—Body/1MΩ, or more
(B56) No. 20—Body/1MΩ, or more
G3M0126
2. CHECK ATF TEMPERATURE SENSOR.
1) Measure resistance between transmission connector
receptacle’s terminals.
Connector & terminal / Specified resistance:
(T4) No. 5—No. 12 /
2.1—2.9 kΩ[ATF temperature: 20°C (68°F)]
2) Connect connectors to transmission and TCM.
3) Start and warm-up the engine until ATF temperature
has increased.
4) Stop the engine and disconnect connector from trans-
mission.
5) Measure resistance between transmission connector
receptacle’s terminals.
Connector & terminal / Specified resistance:
(T4) No. 5—No. 12 /
275—375Ω[ATF temperature: 80°C (176°F)]
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3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code