SUBARU LEGACY 1997 Service Repair Manual

10BQ9CHECK ATF TEMPERATURE SENSOR
CIRCUIT.
Check ATF temperature sensor circuit. [T7F0].>
: Is there any trouble in ATF temperature sen-
sor circuit?
: Repair or replace ATF temperature sensor circuit.
: Go to next.
: Is there poor contact in TCM connector?
: Repair poor contact in TCM connector.
: Go to next.
: Is there any mechanical trouble in automatic
transmission?
: Repair or replace automatic transmission.
: Replace TCM.
320
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0662
BR: DTC P0743
—TORQUE CONVERTER CLUTCH SYSTEM
(DUTY SOLENOID B) ELECTRICAL—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

No lock-up (after engine warm-up)
WIRING DIAGRAM:
OBD0413
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10BR1
CHECK DTC P0743 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0743?
: Check duty solenoid B circuit. [T7B0].>
: It is not necessary to inspect DTC P0743.
321
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0663
BS: DTC P0748
—PRESSURE CONTROL SOLENOID (DUTY
SOLENOID A) ELECTRICAL—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

Excessive shift shock
WIRING DIAGRAM:
OBD0424
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10BS1
CHECK DTC P0748 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0748?
: Check duty solenoid A circuit. [T7A0].>
: It is not necessary to inspect DTC P0748.
322
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0664
BT: DTC P0753
—SHIFT SOLENOID A (SHIFT SOLENOID 1)
ELECTRICAL—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

No shift
WIRING DIAGRAM:
OBD0436
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10BT1
CHECK DTC P0753 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0753?
: Check shift solenoid 1 circuit. [T7E0].>
: It is not necessary to inspect DTC P0753.
323
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0665
BU: DTC P0758
—SHIFT SOLENOID B (SHIFT SOLENOID 2)
ELECTRICAL—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

No shift
WIRING DIAGRAM:
OBD0444
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10BU1
CHECK DTC P0758 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0758?
: Check shift solenoid 2 circuit. [T7D0].>
: It is not necessary to inspect DTC P0758.
324
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0666
BV: DTC P0760
—SHIFT SOLENOID C (SHIFT SOLENOID 3)
MALFUNCTION—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

Ineffective engine brake with selector lever in“3”
WIRING DIAGRAM:
B2M1110
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10BV1CHECK ANY OTHER DTC (BESIDES DTC
P0760) ON DISPLAY.
: Is there any other DTC on display?
: Inspect relevant DTC using“10. Diagnostics Chart
with Trouble Code”.
: Go to step10BV2.
325
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

10BV2
CHECK INHIBITOR SWITCH CIRCUIT.
Check inhibitor switch circuit.
: Is there any trouble in inhibitor switch cir-
cuit?
: Repair or replace inhibitor switch circuit.
: Go to step10BV3.
OBD0145A
10BV3
CHECK GEAR POSITION.
1) Turn ignition switch to OFF.
2) Connect the Subaru select monitor to data link connec-
tor.
3) Lift-up or raise the vehicle and support with safety
stands.
CAUTION:
On AWD models, raise all wheels off ground.
4) Start and warm-up the engine and transmission.
H2M1150
5) Subaru select monitor switch to ON.
6) Select AT mode using function key.
Press the function key [/], and change to AT mode.
7) Press the function key [0].
G3M0152
8) Designate mode using function key.
Function mode for AT: F10
OBD0615
9) Move selector lever to“D”and drive the vehicle.
10) Read data on Subaru select monitor.
: Does gear position change according to
throttle position and vehicle speed?
: Go to next.
: Go to step10BV4.
: Is there poor contact in TCM connector?
: Repair poor contact in TCM connector.
: Go to next.
326
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

: Is there any mechanical trouble in automatic
transmission?
: Repair or replace automatic transmission.
: Replace TCM.
10BV4
CHECK SHIFT SOLENOID 1 CIRCUIT.
Check shift solenoid 1 circuit.
: Is there any trouble in shift solenoid 1 cir-
cuit?
: Repair or replace shift solenoid 1 circuit.
: Go to step10BV5.
10BV5
CHECK SHIFT SOLENOID 2 CIRCUIT.
Check shift solenoid 2 circuit.
: Is there any trouble in shift solenoid 2 cir-
cuit?
: Repair or replace shift solenoid 2 circuit.
: Go to step10BV6.
10BV6
CHECK SHIFT SOLENOID 3 CIRCUIT.
Check shift solenoid 3 circuit.
: Is there any trouble in shift solenoid 3 cir-
cuit?
: Repair or replace shift solenoid 3 circuit.
: Go to next.
: Is there poor contact in TCM connector?
: Repair poor contact in TCM connector.
: Go to next.
: Is there any mechanical trouble in automatic
transmission?
: Repair or replace automatic transmission.
: Replace TCM.
327
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0667
BW: DTC P0763
—SHIFT SOLENOID C (SHIFT SOLENOID 3)
ELECTRICAL—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

Ineffective engine brake with selector lever in“3”
WIRING DIAGRAM:
OBD0452
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10BW1
CHECK DTC P0763 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0763?
: Check shift solenoid 3 circuit.
: It is not necessary to inspect DTC P0763.
328
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M1113
BX: DTC P1100
—STARTER SWITCH CIRCUIT LOW INPUT
—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
TROUBLE SYMPTOM:

Failure of engine to start
WIRING DIAGRAM:
B2M1047
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

329
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles