sensor SUBARU TRIBECA 2009 1.G Service Workshop Manual

5AT(diag)-113
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
AL:DTC P1717 ATF TEMP. SENSOR 2 CIRCUIT HIGH
DTC DETECTING CONDITION:
Input signal circuit to ATF temperature sensor 2 is open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock
WIRING DIAGRAM:
AT-01628
11
B54
B11
T4
TCM
13
B54
B11
12789563410 11 1219 20 2113 14 15 16 17 18222324
TRANSMISSION
125678
131415169101112
34
17181920
612
T5T621123 68910 11 12 13 14451516
T6
7
12586910 113412
T5
7

5AT(diag)-114
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
transmission.
3) Measure the resistance of harness
between TCM connector and chassis ground.
Connector & terminal
(B54) No. 13 — (B11) No. 12:
(B54) No. 11 — (B11) No. 6:
Is the resistance more than 1
MΩ?
Go to step 2.Repair the short
circuit of harness
between TCM and
transmission con-
nector.
2CHECK ATF TEMPERATURE SENSOR.
1) Turn the ignition switch to OFF.
2) Connect the connectors to transmission
and TCM.
3) Turn the ignition switch to ON and start
engine.
4) Warm-up the transmission until the ATF
temperature reaches to 80°C (176°F).
NOTE:
If the ambient temperature falls below 0°C
(32°F), drive the vehicle until the ATF reaches
its operating temperature.
5) Disconnect the connector from transmis-
sion.
6) Measure the resistance between transmis-
sion connector terminals.
Connector & terminal
(T4) No. 6 — (T4) No.12:
Is the resistance between 300
— 700 Ω?
Go to step 3.Go to step 5.
3CHECK ATF TEMPERATURE SENSOR.
Measure the resistance between transmission
connector terminals.
Connector & terminal
(T4) No. 6 — (T4) No.12:
Does the resistance value
increase while the ATF temper-
ature decreases?
Go to step 4.Go to step 5.
4CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Connect the connector.
2) Turn the ignition switch to ON. (Engine
OFF)
3) Read the ATF temperature using Subaru
Select Monitor.
Does the ATF temperature
gradually decrease?
Even if the SPORT
indicator light
blinks, the system
is in normal condi-
tion. A temporary
poor contact of
connector or har-
ness may be the
cause. Repair the
poor contacts of
harnesses of ATF
temperature sen-
sor and transmis-
sion connector.
Go to step 6.

5AT(diag)-115
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
AM:DTC P1718 AT CAN COMMUNICATION CIRCUIT
NOTE:
DTC P1718 AT CAN communication circuit, refer to “LAN System”. TIC TROUBLE CODE (DTC), OPERATION, Subaru Select Monitor.>
AN:DTC P1798 GEAR 1 ENGINE BRAKE
NOTE:
Refer to DTC P0771 for diagnostic procedure. PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
5CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Lift-up the vehicle and place it on rigid
racks.
NOTE:Raise all wheels off floor.
5) Drain the ATF.
CAUTION:Do not drain ATF until it cools down.
6) Remove the oil pan, and disconnect the
connector from control valve body connector.
7) Measure the resistance between transmis-
sion ground and control valve body connector.
Connector & terminal
(T5) No. 1 — Chassis ground:
(T6) No. 2 — Chassis ground:
Is the resistance more than 1
MΩ?
Replace the con-
trol valve body.
Control Valve
Body.>
Repair the short
circuit of harness
between transmis-
sion connector
and control valve
body connector.
6CHECK POOR CONTACT.
Check poor contact of ATF temperature sensor
1 circuit.
Is there poor contact? Repair the poor
contact.
Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
Step Check Yes No

5AT(diag)-118
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK THE BODY INTEGRATED UNIT.
1) Connect the Subaru Select Monitor to data
link connector.
2) Turn the ignition switch to ON. (Engine
OFF)
3) Read the DTC of body integrated unit using
Subaru Select Monitor. OPERATION, Subaru Select Monitor.>
Is DTC displayed? Perform the diag-
nosis according to
DTC.
Go to step 2.
2CHECK BODY INTEGRATED UNIT INPUT
SIGNAL.
1) Shift the select lever to shift to the “P”
range.
2) Read the TIP mode SW data of body inte-
grated unit using Subaru Select Monitor. to LAN(diag)-12, OPERATION, Subaru Select
Monitor.>
Is OFF displayed? Go to step 3.Go to step 7.
3CHECK BODY INTEGRATED UNIT INPUT
SIGNAL.
1) Shift the select lever from “P” to “D” range.
2) Read the TIP mode SW data of body inte-
grated unit using Subaru Select Monitor. to LAN(diag)-12, OPERATION, Subaru Select
Monitor.>
Is the indication on each range
OFF?
Go to step 4.Replace the select
lever assembly.
Select Lever.>
4CHECK BODY INTEGRATED UNIT INPUT
SIGNAL.
1) Shift the select lever to manual mode.
2) Shift the select lever to other than “D”
range.
3) Read the TIP mode SW data of body inte-
grated unit using Subaru Select Monitor. to LAN(diag)-12, OPERATION, Subaru Select
Monitor.>
Is OFF displayed? Go to step 5.Replace the select
lever assembly.
Select Lever.>
5CHECK DTC OF TCM.Is DTC of Transmission Range
Sensor Circuit (PRNDL Input)
and AT CAN communication
circuit displayed?
Pe r for m t h e d ia g -
nosis according to
each DTC.
Go to step 6.
6CHECK INPUT SIGNAL FROM TCM.
1) Shift the select lever from “P” to “D” range.
2) Read the TIP mode SW data of TCM using
Subaru Select Monitor. OPERATION, Subaru Select Monitor.>
Is the indication on each range
OFF?
Even if the SPORT
indicator light
blinks, the system
is in normal condi-
tion. A temporary
poor contact of
connector or har-
ness may be the
cause.
Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
7CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND MANUAL MODE
SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect harness connector from body
integrated unit and select lever.
3) Measure the harness resistance between
the body integrated unit and chassis ground.
Connector & terminal
(B281) No. 27 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 8.Repair the short
circuit of harness
between body inte-
grated unit and
manual mode.

5AT(diag)-119
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
AQ:DTC P1840 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH A CIR-
CUIT
DTC DETECTING CONDITION:
Front brake oil pressure switch malfunction
TROUBLE SYMPTOM:
Excessive shift shock
NOTE:
Refer to DTC P0751 for diagnostic procedure. PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
AR:DTC P1842 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH C CIR-
CUIT
DTC DETECTING CONDITION:
Input clutch oil pressure switch is malfunction.
TROUBLE SYMPTOM:
Excessive shift shock
NOTE:
Refer to DTC P0756 for diagnostic procedure. PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
AS:DTC P1843 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH D CIR-
CUIT
DTC DETECTING CONDITION:
Direct clutch oil pressure switch malfunction.
TROUBLE SYMPTOM:
Excessive shift shock
NOTE:
Refer to DTC P0766 for diagnostic procedure. PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
AT:DTC P1844 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH E CIR-
CUIT
DTC DETECTING CONDITION:
High & low reverse clutch oil pressure switch malfunction.
TROUBLE SYMPTOM:
Excessive shift shock
NOTE:
Refer to DTC P0761 for diagnostic procedure. PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
8CHECK MANUAL MODE SWITCH.
1) Shift the select lever to shift to the “P”
range.
2) Measure the resistance between harness
connector terminals of manual mode switch.
Te r m i n a l s
(B116) No. 7 — No. 8
Is the resistance more than 1
MΩ?
Check the body
integrated unit.
Replace the select
lever assembly.
Select Lever.>
Step Check Yes No

5AT(diag)-128
General Diagnostic Table
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
16.General Diagnostic Table
A: INSPECTION
Symptom Problem parts
Shifting vehicle speed is low on “D” range.
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Accelerator pedal position sensor
•Throttle position sensor
•ATF temperature sensor
•CAN communication signal
Shifting vehicle speed is high on “D” range.
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Accelerator pedal position sensor
•Throttle position sensor
•CAN communication signal
•Brake switch signal
•ATF temperature sensor
Excessive shock. (“N”→“D” range)
•Engine idle speed
•Engine speed signal
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•ATF temperature sensor
•Oil pressure switch 1 and front brake solenoid valve
•CAN communication signal
•Fluid level and condition
•TCM power supply
•PVIGN relay
Excessive shift shock on 1st of “D” range → 2nd of “D”
range or “1st of manual mode” → “2nd of manual mode”.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•Oil pressure switch 4 and direct clutch solenoid valve
•CAN communication signal
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition
Excessive shift shock on 2nd of “D” range → 3rd of “D”
range or “2nd of manual mode” → “3rd of manual mode”.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•Oil pressure switch 5 and high & low reverse clutch solenoid valve
•CAN communication signal
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition
Excessive shift shock on 3rd of “D” range → 4th of “D”
range or “3rd of manual mode” → “4th of manual mode”.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•Oil pressure switch 3 and input clutch solenoid valve
•CAN communication signal
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition

5AT(diag)-129
General Diagnostic Table
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Excessive shift shock on 4th of “D” range → 5th of “D”
range or “4th of manual mode” → “5th of manual mode”.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•Oil pressure switch 1 and front brake solenoid valve
•CAN communication signal
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition
Excessive shock at kick down.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•CAN communication signal
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition
Excessive shock at shift up.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•Engine speed signal
•CAN communication signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition
Excessive shock at lock up.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•Engine speed signal
•CAN communication signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Lock up solenoid valve
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Fluid level and condition
Excessive shock at engine brake.
•Accelerator pedal position sensor
•Throttle position sensor
•Control cable adjustment
•CAN communication signal
•Fluid level and condition
•Line pressure
•Low coast brake solenoid valve
Judder is occurred at lock up.
•Fluid level and condition
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Accelerator pedal position sensor
•Throttle position sensor
•Lock up solenoid valve
•ATF temperature sensor 1 and 2
Noise at “R”, “N” and “D” range.
•Fluid level and condition
•Engine speed signal
•ATF temperature sensor 1 and 2
Hold at “D” range or 1st on manual mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Direct clutch solenoid valve
•Line pressure
•Up switch signal
•CAN communication signal
•Accelerator pedal position sensor
Symptom Problem parts

5AT(diag)-130
General Diagnostic Table
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Hold at “D” range or 2nd on manual mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Low coast brake solenoid valve
•Line pressure
•Up switch signal
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
Hold at “D” range or 3rd on manual mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Line pressure
•Up switch signal
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
Hold at “D” range or 4th on manual mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 3 and input clutch solenoid valve
•Oil pressure switch 4 and direct clutch solenoid valve
•Oil pressure switch 5 and high & low reverse clutch solenoid valve
•Low coast brake solenoid valve
•Front brake solenoid valve
•Line pressure
•Up switch signal
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
•TCM power supply
•PVIGN relay
Hold at “D” range or 5th on manual mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 1 and front brake solenoid valve
•Line pressure
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
Gear does not shift 1st of “D” range → 2nd of “D” range or
“1st of manual mode” → “2nd of manual mode”.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Up switch
•CAN communication signal
•Accelerator pedal position sensor
Gear does not shift 2nd of “D” range → 3rd of “D” range or
“2nd of manual mode” → “3rd of manual mode”.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 5 and high & low reverse clutch solenoid valve
•Line pressure
•Up switch signal
•CAN communication signal
•Accelerator pedal position sensor
Gear does not shift 3rd of “D” range → 4th of “D” range or
“3rd of manual mode” → “4th of manual mode”.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 3 and input clutch solenoid valve
•Oil pressure switch 1 and front brake solenoid valve
•Line pressure
•Up switch signal
•CAN communication signal
•Accelerator pedal position sensor
Symptom Problem parts

5AT(diag)-131
General Diagnostic Table
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Gear does not shift 4th of “D” range → 5th of “D” range or
“4th of manual mode” → “5th of manual mode”.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 1 and front brake solenoid valve
•Oil pressure switch 4 and direct clutch solenoid valve
•Turbine speed sensor 1 and turbine speed sensor 2
•ATF temperature sensor
•Line pressure
•Up switch signal
•CAN communication signal
•Accelerator pedal position sensor
Gear does not shift down to 4th on “D” range or manual
mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 1 and front brake solenoid valve
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
Gear does not shift down to 3rd on “D” range or manual
mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 3 and input clutch solenoid valve
•Oil pressure switch 1 and front brake solenoid valve
•Line pressure
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
•TCM power supply
•PVIGN relay
Gear does not shift down to 2nd on “D” range or manual
mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 5 and high & low reverse clutch solenoid
•Line pressure
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
Gear does not shift down to 1st on “D” range or manual
mode.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Down switch signal
•CAN communication signal
•Accelerator pedal position sensor
No lock-up occurs.
•Fluid level and condition
•Line pressure
•Engine speed signal
•Turbine speed sensor 1 and turbine speed sensor 2
•Lock up solenoid valve
•CAN communication signal
•ATF temperature sensor 1 and 2
•Accelerator pedal position sensor
•Brake switch signal
•Range signal
No shift shock occurred when shifting 1st of “D” range →
2nd of “D” range or “1st of manual mode” → “2nd of man-
ual mode”. Or clutch slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•CAN communication signal
Symptom Problem parts

5AT(diag)-132
General Diagnostic Table
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
No shift shock occurred when shifting 2nd of “D” range →
3rd of “D” range or “2nd of manual mode” →3rd of manual
mode”. Or clutch slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 5 and high & low reverse clutch solenoid valve
•Line pressure
•CAN communication signal
No shift shock occurred when shifting 3rd of “D” range →
4th of “D” range or “3rd of manual mode” → “4th of manual
mode”. Or clutch slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 3 and input clutch solenoid valve
•Oil pressure switch 1 and front brake solenoid valve
•Line pressure
•CAN communication signal
No shift shock occurred when shifting 4th of “D” range →
5th of “D” range or “4th of manual mode” → “5th of manual
mode”. Or clutch slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 1 and front brake solenoid valve
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Accelerator pedal position sensor
•Throttle position sensor
Engine skids when shifting 5th of “D” range → 4th of “D”
range or “5th of manual mode” → “ 4 t h of ma nua l mo d e” . O r
slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 1 and front brake solenoid valve
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Accelerator pedal position sensor
•Throttle position sensor
Engine skids when shifting 4th of “D” range → 3rd of “D”
range or “4th of manual mode” → “3rd of manual mode”.
Or slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 3 and input clutch solenoid valve
•Oil pressure switch 1 and front brake solenoid valve
•Line pressure
•Accelerator pedal position sensor
•Throttle position sensor
Engine skids when shifting 3rd of “D” range → 2nd of “D”
range or “3rd of manual mode” → “2nd of manual mode”.
Or slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 5 and high & low reverse clutch solenoid valve
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Accelerator pedal position sensor
•Throttle position sensor
Engine skids when shifting 2nd of “D” range → 1st of “D”
range or “2nd of manual mode” → “1st of manual mode”.
Or slipping occurred.
•Fluid level and condition
•Vehicle speed sensor 1 and vehicle speed sensor 2
•Oil pressure switch 4 and direct clutch solenoid valve
•Line pressure
•Accelerator pedal position sensor
•Throttle position sensor
Engine brake does not function at 5th → 4th of manual
mode.
•Inhibitor switch
•Fluid level and condition
•Control cable adjustment
•Manual mode switch
•Oil pressure switch 1
•Down switch signal
Engine brake does not function at 4th → 3rd of manual
mode.
•Inhibitor switch
•Fluid level and condition
•Control cable adjustment
•Manual mode switch
•Oil pressure switch 1 and oil pressure switch 3
•Down switch signal
Symptom Problem parts