2009 SUBARU TRIBECA brake

5AT(diag)-73
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 and transmission connector.
Connector & terminal
(B54) No. 17 — (B11) No. 15:
(B55) No. 8 — (B11) No. 4:
(B54) No. 5 — Chassis ground:
(B54) No. 14 — Chassis ground:
Is the resistance less than 1
Ω?
Go to step 2.Repair the open
circuit of harness
between TCM and
transmission con-
nector.
2CHECK HARNESS CONNECTOR BETWEEN
TCM AND CHASSIS GROUND.
Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
(B55) No. 8 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 3.Repair the short
circuit of harness
between TCM and
transmission con-
nector.
3CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Connect all the connectors.
2) Turn the ignition switch to ON. (Engine
OFF)
3) Check the input signal of the H&LR/C oil
pressure SW.
Is OFF displayed? Go to step 4.Go to step 6.
4CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Turn the ignition switch to OFF.
2) Turn the ignition switch to ON. (Engine ON)
3) Shift to “D” range and brake ON (1st) with
checking current gear position using Subaru
Select Monitor.
4) Check the input signal of the H&LR/C oil
pressure SW.
Is ON displayed? 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 contact of
harness in the
solenoid output
and oil pressure
SW input.
Go to step 5.

5AT(diag)-78
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 and transmission connector.
Connector & terminal
(B54) No. 22 — (B11) No. 16:
(B54) No. 21 — (B11) No. 10:
(B54) No. 5 — Chassis ground:
(B54) No. 14 — Chassis ground:
Is the resistance less than 1
Ω?
Go to step 2.Repair the open
circuit of harness
between TCM and
transmission con-
nector.
2CHECK HARNESS CONNECTOR BETWEEN
TCM AND BODY HARNESS.
Measure the resistance of harness between
TCM connector and body harness.
Connector & terminal
(B54) No. 21 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 3.Repair the short
circuit of harness
between TCM and
transmission con-
nector.
3CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Connect all the connectors.
2) Turn the ignition switch to ON. (Engine
OFF)
3) Check input signal of D/C oil pressure SW.
Is OFF displayed? Go to step 4.Go to step 6.
4CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Turn the ignition switch to OFF.
2) Turn the ignition switch to ON. (Engine ON)
3) Shift to 2nd speed of manual mode and
brake ON with checking current gear position
using Subaru Select Monitor.
4) Check input signal of D/C oil pressure SW.
Is ON displayed? 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 contact of
harness in the
solenoid output
and oil pressure
SW input.
Go to step 5.

5AT(diag)-82
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Z: DTC P0771 SHIFT SOLENOID “E” PERFORMANCE OR STUCK OFF
DTC DETECTING CONDITION:
Output signal value of low coast brake solenoid and oil pressure does not match.
TROUBLE SYMPTOM:
•Locked to 2nd gear.
•Engine brake does not function at 1st or 2nd of manual mode.
WIRING DIAGRAM:
AT-02939
B54
B11
TCM
B54
B11
125678
131415169101112
34
17181920
TRANSMISSION
12789563410 11 1219 20 2113 14 15 16 17 18222324
T4
T6
12586910 113412
T6
7
E
514
T5
1512
139
110
123 68910 11 12 13 14451516
T5
7

5AT(diag)-85
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
AA:DTC P0773 SHIFT SOLENOID “E” ELECTRICAL
DTC DETECTING CONDITION:
Output signal circuit of low coast brake solenoid is open or shorted.
TROUBLE SYMPTOM:
•Locked to 2nd gear.
•Engine brake does not function at 1st or 2nd of manual mode.
WIRING DIAGRAM:
AT-02991
B54
15
B11
TCM
B54
B11
125678
131415169101112
34
17181920
TRANSMISSION
12789563410 11 1219 20 2113 14 15 16 17 18222324
T4
T6
12586910 113412
T6
7
E
514
1
13

5AT(diag)-86
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK DTC OF TCM.Is DTC (P0802) of the PVIGN
relay detected?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 2.
2CHECK 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 and transmission connector.
Connector & terminal
(B54) No. 15 — (B11) No. 13:
(B54) No. 5 — Chassis ground:
(B54) No. 14 — Chassis ground:
Is the resistance less than 1
Ω?
Go to step 3.Repair the open
circuit of harness
between TCM con-
nector and trans-
mission connector.
3CHECK HARNESS CONNECTOR BETWEEN
TCM AND BODY HARNESS.
Measure the resistance of harness between
TCM connector and body harness.
Connector & terminal
(B54) No. 15 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 4.Repair the short
circuit of harness
between TCM con-
nector and trans-
mission connector.
4CHECK 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
control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(T4) No. 13 — (T6) No. 1:
Is the resistance less than 1
Ω?
Go to step 5.Repair the open
circuit of harness
between transmis-
sion connector
and control valve
body connector.
5CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
Measure the resistance between chassis
ground and control valve body connector.
Connector & terminal
(T6) No. 1 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 6.Repair the short
circuit of harness
between control
valve body con-
nector and trans-
mission ground.
6CHECK LOW COAST BRAKE SOLENOID.
Measure the resistance of harness connector
between control valve body connector and
transmission ground.
Connector & terminal
(T6) No. 1 — Transmission ground:
Is the resistance between 5 —
17 Ω?
Go to step 7.Replace the con-
trol valve body.
Control Valve
Body.>

5AT(diag)-89
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK FUSE (No. 32).
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 32).
Is the fuse (No. 32) blown out? Replace the fuse
(No. 32). If the
replaced fuse has
blown out easily,
repair short circuit
of harness
between fuse (No.
32) and TCM.
Go to step 2.
2CHECK OUTPUT SIGNAL OF TCM.
1) Turn the ignition switch to ON.
2) With the brake pedal depressed, shift the
select lever to “D” range.
3) Measure the voltage between TCM and
chassis ground.
Connector & terminal
(B55) No. 15 (+) — Chassis ground (–):
Is the voltage more than 10.5
V?
Go to step 3.Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
3CHECK HARNESS CONNECTOR BETWEEN
TCM AND SHIFT LOCK SOLENOID.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from TCM and
shift lock solenoid.
3) Measure the resistance of harness
between TCM and shift lock solenoid connec-
tor.
Connector & terminal
(B55) No. 15 — (B116) No. 3:
Is the resistance less than 1
Ω?
Go to step 4.Repair the open
circuit of harness
between TCM and
shift lock solenoid
connector.
4CHECK HARNESS CONNECTOR BETWEEN
TCM AND SHIFT LOCK SOLENOID.
Measure the resistance of harness between
TCM and chassis ground.
Connector & terminal
(B55) No. 15 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 5.Repair the short
circuit of harness
between TCM and
shift lock solenoid
connector.
5CHECK HARNESS BETWEEN SHIFT LOCK
SOLENOID AND CHASSIS GROUND TERMI-
NAL.
Measure the resistance of harness between
shift lock solenoid and chassis ground.
Connector & terminal
(B116) No. 4 — Chassis ground:
Is the resistance less than 1
Ω?
Go to step 6.Repair the open
circuit of harness
between chassis
ground and shift
lock solenoid con-
nector.
6CHECK SHIFT LOCK SOLENOID.
Measure the resistance of shift lock solenoid
terminals.
Connector & terminal
(B116) No. 3 — No. 4:
Is the resistance between 7 —
21 Ω?
Go to step 7.Replace the shift
lock solenoid.

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)-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