Subaru 2002 IMPREZA Service Manual page 494

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
BQ:DTC PO731
-
GEAR 1 INCORRECT RATIO
-
NOTE:
For the diagnostic procedure, refer to DTC P0734. <Ref. to EN(D0HC TURBO)-270, DTC PO734 - GEAR
4 INCORRECT RATIO
-,
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BR:DTC PO732
-
GEAR 2 INCORRECT RATIO
-
NOTE:
For the diagnostic procedure, refer to DTC P0734. <Ref. to EN(D0HC TURBO)-270, DTC PO734 - GEAR
4 INCORRECT RATIO -, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BS:DTC PO733
-
GEAR 3 INCORRECT RATIO
-
NOTE:
For the diagnostic procedure, refer to DTC P0734. <Ref. to EN(D0HC TURBO)-270, DTC PO734 - GEAR
4 INCORRECT RATIO
-,
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BT:DTC PO734
-
GEAR 4 INCORRECT RATIO
-
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
Shift point too high or too low; engine brake not effective in "3' range; excessive shift shock; excessive
tight corner "braking"
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(D0HC TURBO)-
49, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(D0HC TURBO)-46, Inspec-
tion Mode.>.
WIRING DIAGRAM:
Check
Is there any other DTC on dis-
Yes
Inspect relevant
DTC using "List of
Diagnostic Trou-
ble Code (DTC)".
<Ref. to EN(D0HC
TURBO)-80, List
of Diagnostic Trou-
ble Code (DTC).>
Repair or replace
the throttle posi-
tion sensor circuit.
Repair or replace
the vehicle speed
sensor 2 circuit.
play?
No
Go to step 2.
Go to step 3 .
Go to step 4.
2 CHECK THROTTLE POSITION SENSOR
CIRCUIT.
Check throttle position sensor circuit. <Ref. to
SOR, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
CHECK FRONT VEHICLE SPEED SENSOR
CIRCUIT.
Check front vehicle speed sensor circuit. <Ref.
SENSOR, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
SPEED SENSOR CIRCUIT.
Check torque converter turbine speed sensor
circuit. <Ref. to AT-62, DTC 36 TORQUE CON-
VERTER TURBINE SPEED SENSOR, Diag-
nostic Procedure with Diagnostic Trouble Code
(DTC).>
AT-52, DTC 31 THROTTLE POSITION SEN-
3
to AT-57, DTC 33 FRONT VEHICLE SPEED
1
CHECK TORQUE CONVERTER TURBINE
Is there any trouble in throttle
position sensor circuit?
Is there any trouble in vehicle
speed sensor 2 circuit?
I s
there any trouble in torque
converter turbine speed sensor
circuit?
I
the torque con-
verter turbine
speed sensor cir-
EN( DOHC TU RB0)-270