Subaru 2009 IMPREZA Service Manual page 2036

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
H: DTC P0731 GEAR 1 INCORRECT RATIO
NOTE:
Refer to DTC P0736 for diagnostic procedure. <Ref. to 4AT(diag)-51, DTC P0736 REVERSE INCORRECT
RATIO, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
I: DTC P0732 GEAR 2 INCORRECT RATIO
NOTE:
Refer to DTC P0736 for diagnostic procedure. <Ref. to 4AT(diag)-51, DTC P0736 REVERSE INCORRECT
RATIO, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
J: DTC P0733 GEAR 3 INCORRECT RATIO
NOTE:
Refer to DTC P0736 for diagnostic procedure. <Ref. to 4AT(diag)-51, DTC P0736 REVERSE INCORRECT
RATIO, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
K: DTC P0734 GEAR 4 INCORRECT RATIO
NOTE:
Refer to DTC P0736 for diagnostic procedure. <Ref. to 4AT(diag)-51, DTC P0736 REVERSE INCORRECT
RATIO, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
L: DTC P0736 REVERSE INCORRECT RATIO
DTC DETECTING CONDITION:
Vehicle sensor, torque converter turbine speed sensor or control valve malfunction
TROUBLE SYMPTOM:
• Shift point is too high or too low.
• Excessive shift shock
• Tight corner braking phenomenon occurs.
• Gear is not shifted to reverse.
• Gear position is held by fail safe function.
Step
1 CHECK THROTTLE OPENING ANGLE SEN-
SOR.
Read the diagnostic trouble code (DTC) of
engine using Subaru Select Monitor. <Ref. to
EN(H4DOTC)(diag)-83, List of Diagnostic Trou-
ble Code (DTC).>
2 CHECK DTC.
3 CHECK AT VEHICLE SPEED SENSOR CIR-
CUIT.
Perform the diagnosis according to DTC P0720.
<Ref. to 4AT(diag)-47, DTC P0720 OUTPUT
SPEED SENSOR CIRCUIT, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
4 CHECK AT TURBINE REVOLUTION SPEED
SENSOR CIRCUIT.
Perform the diagnosis according to DTC P0715.
<Ref. to 4AT(diag)-42, DTC P0715 INPUT/
TURBINE SPEED SENSOR CIRCUIT, Diag-
nostic Procedure with Diagnostic Trouble Code
(DTC).>
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Are DTC P0122, P0123,
P0222, P0223, P2109 and
P2135 displayed?
Is DTC P1718 displayed?
Is there any trouble?
Is there any trouble?
4AT(diag)-51
Yes No
Perform the diag- Go to step 2.
nosis according to
DTC.
Perform the diag- Go to step 3.
nosis according to
DTC.
Check the harness Go to step 4.
of the front vehicle
speed sensor cir-
cuit, and repair the
defective part.
Check the torque There are malfunc-
converter turbine tions in TCM, TCM
speed sensor cir- connector poor
cuit. contact, or trans-
mission assembly
mechanical mal-
function.