shift SUBARU LEGACY 1996 Service Repair Manual

D: LIST OF TROUBLE CODE
1. TROUBLE CODE
Trouble code Item Content of diagnosisAbbr.
(Select monitor)Page
11 Duty solenoid ADetects open or shorted drive
circuit, as well as valve seizure.PLDTY 15
12 Duty solenoid BDetects open or shorted drive
circuit, as well as valve seizure.LUDTY 19
13 Shift solenoid 3Detects open or shorted drive
circuit, as well as valve seizure.OVR 23
14 Shift solenoid 2Detects open or shorted drive
circuit, as well as valve seizure.SFT2 25
15 Shift solenoid 1Detects open or shorted drive
circuit, as well as valve seizure.SFT1 27
21 ATF temperature sensorDetects open or shorted input
signal circuit.ATFT 29
22 Mass air flow signalDetects open or shorted input
signal circuit.AFM 32
23 Engine speed signalDetects open or shorted input
signal circuit.EREV 34
24 Duty solenoid CDetects open or shorted drive
circuit, as well as valve seizure.4WDTY 36
25 Torque control signalDetects open or shorted input
signal circuit.TQ.CT 38
31 Throttle position sensorDetects open or shorted input
signal circuit.THV 40
32 Vehicle speed sensor 1Detects open or shorted input
signal circuit.VSP1 43
33 Vehicle speed sensor 2Detects open or shorted input
signal circuit.VSP2 47
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3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
6. Diagnostic Chart for On-board Diagnostic System

7. Diagnostic Chart with Trouble Code
A: TROUBLE CODE 11
—DUTY SOLENOID A—
DIAGNOSIS:
Output signal circuit of duty solenoid A or resistor is open
or shorted.
TROUBLE SYMPTOM:
Excessive shift shock
1. Check harnesses and connectors between
TCM and duty solenoid A and between
resistor.
OK
Not OK
Repair or replace harness connectors.
2. Check duty solenoid A’s ground line.
OK
Not OK
Repair ground line.
3. Check resistor.
OK
Not OK
Check and replace resistor if necessary.
4. Check duty solenoid A.
OK
Not OK
Replace duty solenoid A.
5. Check output signal emitted from TCM.
OK
Not OK

Repair TCM connector terminal poor contact.

Replace TCM.

Repair TCM connector terminal poor contact.
OBD0424





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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.

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

D: TROUBLE CODE 14
—SHIFT SOLENOID 2—
DIAGNOSIS:
Output signal circuit of shift solenoid 2 is open or shorted.
TROUBLE SYMPTOM:
No shift
1. Check harness and connectors between TCM
and shift solenoid 2.
OK
Not OK
Repair or replace harness connectors.
2. Check shift solenoid 2’s ground line.
OK
Not OK
Repair ground line.
3. Check shift solenoid 2.
OK
Not OK
Replace shift solenoid 2.
4. Check output signal emitted from TCM.
OK
Not OK

Repair TCM connector terminal poor contact.

Replace TCM.

Repair TCM connector terminal poor contact.
OBD0444
OBD0446A
1. CHECK HARNESS AND CONNECTORS BETWEEN
TCM AND SHIFT SOLENOID 2.
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. 13—(B11)No.2/1Ω, 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

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.

26
3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
7. Diagnostic Chart with Trouble Code

E: TROUBLE CODE 15
—SHIFT SOLENOID 1—
DIAGNOSIS:
Output signal circuit of shift solenoid 1 is open or shorted.
TROUBLE SYMPTOM:
No shift
1. Check harness and connectors between TCM
and shift solenoid 1.
OK
Not OK
Repair or replace harness connectors.
2. Check shift solenoid 1’s ground line.
OK
Not OK
Repair ground line.
3. Check shift solenoid 1.
OK
Not OK
Replace shift solenoid 1.
4. Check output signal emitted from TCM.
OK
Not OK

Repair TCM connector terminal poor contact.

Replace TCM.

Repair TCM connector terminal poor contact.
OBD0436
OBD0438A
1. CHECK HARNESS AND CONNECTORS BETWEEN
TCM AND SHIFT SOLENOID 1.
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. 14—(B11)No.3/1Ω, 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

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.

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

F: TROUBLE CODE 21
—ATF TEMPERATURE SENSOR—
DIAGNOSIS:
Input signal circuit of TCM to ATF temperature sensor is
open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock
1. Check harness and connectors between TCM
and ATF temperature sensor.
OK
Not OK
Repair or replace harness connectors.
2. Check ATF temperature sensor.
OK
Not OK
Replace ATF temperature sensor.
3. Check input signal for TCM.
Not OK
OK

Repair TCM connector terminal poor contact.

Repair TCM connector terminal poor contact.

Replace TCM.
B3M0411



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

K: 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”
1. Check harness connector between TCM and
throttle position sensor.
OK
Not OK
Repair or replace harness connectors.
2. Check throttle position sensor.
OK
Not OK
Replace throttle position sensor.
3. Check input signal for TCM.
Not OK
OK

Repair TCM connector terminal poor contact.

Replace TCM.
4. Check power supply to throttle position
sensor.
OK
Not OK
Repair or replace harness connectors.

Repair TCM connector terminal poor contact.

Replace TCM.
B2M0613




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