check engine light SUBARU TRIBECA 2009 1.G Service Workshop Manual

5AT(diag)-125
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK THE BODY INTEGRATED UNIT.
Check DTC of body integrated unit.
Is DTC of AT CAN communica-
tion circuit displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 2.
2CHECK TCM.
Check DTC of TCM.
Is DTC of AT CAN communica-
tion circuit displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 3.
3CHECK TCM.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON. (Engine
OFF)
4) Turn the Subaru Select Monitor switch to
ON.
5) Shift the select lever to manual mode side,
and then shift down the select lever.
6) Read the indicator.
Is gear position 1 and “ ” dis-
played?
Go to step 4.Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
4CHECK TCM.
1) Shift up the select lever.
2) Read the indicator.
Is the gear position 2, and is
“” displayed?
Go to step 5.Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
5CHECK THE BODY INTEGRATED UNIT.
Read the data of gear position using Subaru
Select Monitor.
Is SPORT shift gear position
2?
Go to step 6.Check the body
integrated unit.
Body Integrated
Unit.>
6CHECK COMBINATION METER.Is the range position/gear posi-
tion indicator light normal?
Refer to “Symptom
Related Diagnos-
tic”. 5AT(diag)-128,
General Diagnos-
tic Table.>
Replace the com-
bination meter
assembly. IDI-11, Combina-
tion Meter.>

CS-15
AT Shift Lock Control System
CONTROL SYSTEMS
Step Check Yes No
1CHECK INPUT SIGNAL OF BODY INTE-
GRATED UNIT USING SUBARU SELECT
MONITOR.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch and Subaru Select
Monitor to ON.
4) Read the input signal of shift position from
Subaru Select Monitor.
Select Monitor.>
Is “7” displayed? Go to step 2.Check the TCM
and body inte-
grated unit.
2CHECK INPUT SIGNAL OF BODY INTE-
GRATED UNIT USING SUBARU SELECT
MONITOR.
Read the input signal of stop light switch from
Subaru Select Monitor.
Select Monitor.>
Is “ON” displayed? Go to step 5.Go to step 3.
3CHECK STOP LIGHT SWITCH.
Depress the brake pedal.
Does the stop light illuminate? Go to step 4.Check the stop
light system.
4CHECK HARNESS BETWEEN STOP LIGHT
SWITCH AND BODY INTEGRATED UNIT.
1) Depress the brake pedal.
2) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B281) No. 23 (+) — Chassis ground (–):
Is the voltage more than 9 V? Go to step 5.Repair the open or
short circuit of har-
ness between the
body integrated
unit and stop light
switch.
5CHECK DTC OF BODY INTEGRATED UNIT.
Check DTC of the body integrated unit.
Diagnostic Trouble Code (DTC).>
Is DTC (B0106) displayed? Repair or replace it
according to the
DTC.
Go to step 6.
6CHECK SHIFT LOCK SOLENOID.
1) Turn the ignition switch to OFF.
2) Disconnect the connector of shift lock sole-
noid.
3) Connect the battery to connector terminal
of shift lock solenoid, and operate the solenoid.
Te r m i n a l s
No. 3 (+) — No. 4 (–):
Is the shift lock solenoid oper-
ating properly?
Go to step 7.Replace the shift
lock solenoid.
7CHECK OPERATION.
1) Connect all the connectors.
2) Turn the ignition switch ON. (Engine OFF)
3) Shift the select lever to “P” range.
4) Depress the brake pedal.
5) Shift the select lever from “P” range to “R”
range.
Can the select lever shift from
“P” range to “R” range?
A temporary poor
contact of connec-
tor or harness may
be the cause.
Check the body
integrated unit.