2009 SUBARU TRIBECA ecm

CC(ETC)(diag)-13
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
8. Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC 11, 15, 21 AND 24 CRUISE CONTROL COMMAND SWITCH
TROUBLE SYMPTOM:
•Cruise control cannot be set. (Cancelled immediately.)
•Cruise control cannot be released.
WIRING DIAGRAM:
CC-00371
ST3
SET/COASTSWITCH
RESUME/ACCELSWITCH
CANCELSWITCH
B136C:ECM
B24
2
B68
STEERINGROLL CONNECTOR
31
MAINSWITCH
541
B12C6
*
*
B21
123412131415567816171819910 1120212223 24 25 2627 28 29 3031 32 33
3534 37363938 41404342 4445 47464948 51505352 54
12345678
B68
123
ST3B136
9
302928 3231201918 22211012111424343327261612345613231525871735
C:
* :TERMINAL NO. OPTIONAL ARRANGEMENT
B122
CRUISE CONTROLCOMMAND SWITCH
B135B:
B122
12345678
B135
5672134
29
101112131415252416
30
98171819202821222332312627333435
B:

CC(ETC)(diag)-14
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK CRUISE CONTROL COMMAND
SWITCH CIRCUIT.
1) Remove the driver's airbag module. to AB-15, REMOVAL, Driver’s Airbag Module.>
2) Disconnect the harness connector of cruise
control command switch.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(ST3) No. 1 (+) — Chassis ground (–):
(ST3) No. 3 (+) — Chassis ground (–):
Is the voltage more than 5 V? Go to step 2.Check the harness
between cruise
control command
switch and ECM,
and the steering
roll connector for
open or short cir-
cuit, or for poor
contact.
2CHECK CRUISE CONTROL COMMAND
SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Remove the cruise control command
switch. trol Command Switch.>
3) Measure the resistance between harness
connector terminal and chassis ground.
Connector terminal
(ST3) No. 2 — Chassis ground:
Is the resistance less than 10
Ω?
Go to step 3.Check for open
between cruise
control command
switch and ECM
and chassis
ground, and check
the ECM.
3Check Cruise Control Command Switch
Measure the resistance between switch termi-
nals when the cruise control command switch
is not being pressed.
Te r m i n a l s
No. 2 — No. 3:
Is the resistance approx. 4 kΩ?Go to step 4.Replace the cruise
control command
switch. CC-5, Cruise Con-
trol Command
Switch.>
4CHECK CANCEL SWITCH.
1) Turn the ignition switch to OFF.
2) Remove the cruise control command
switch. trol Command Switch.>
3) Measure the resistance between switch ter-
minals when the CANCEL switch is pressed.
Te r m i n a l s
No. 2 — No. 3:
Is the resistance approx. less
than 1 Ω when the CANCEL
switch is pressed?
Go to step 5.Replace the cruise
control command
switch. CC-5, Cruise Con-
trol Command
Switch.>
5CHECK SET/COAST SWITCH.
Measure the resistance between switch termi-
nals when the SET/COAST switch is pressed.
Te r m i n a l s
No. 2 — No. 3:
Is the resistance approx. 250 Ω
when SET/COAST switch is
pressed?
Go to step 6.Replace the cruise
control command
switch. CC-5, Cruise Con-
trol Command
Switch.>
6CHECK RESUME/ACCEL SWITCH CIRCUIT.
Measure the resistance between switch termi-
nals when the RESUME/ACCEL switch is
pressed.
Te r m i n a l s
No. 2 — No. 3:
Is the resistance approx. 1,500
Ω when RESUME/ACCEL
switch is pressed?
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Replace the cruise
control command
switch. CC-5, Cruise Con-
trol Command
Switch.>

CC(ETC)(diag)-15
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
B: DTC 12 AND 25 STOP LIGHT SWITCH AND BRAKE SWITCH
TROUBLE SYMPTOM:
•Cruise control cannot be set.
•Cruise control cannot be released.
WIRING DIAGRAM:
CC-00372
B65
MAIN SBFSBF-2 F/B NO.8
B65
4
3
1
2
B28B20
1234
SBF-8 F/B NO.4
F5
B159
F9
F:
947621538
B159F:
ECM
BATTERY
STOP LIGHT SWITCHAND BRAKE SWITCH
BRAKESWITCH
STOP SWITCH SWITCH
IGNITIONRELAY
FUSE & RELAY BOX
12
B107
B135B:
B135
5672134
29
101112131415252416
30
98171819202821222332312627333435
B:

CC(ETC)(diag)-16
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK STOP LIGHT SWITCH AND BRAKE
SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the stop light switch and brake
switch harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B65) No. 2 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 2.•Check fuse No.
8 (in fuse & relay
box).
•Check for open
or short in the har-
ness between stop
light/brake switch
and fuse & relay
box.
2CHECK STOP LIGHT SWITCH AND BRAKE
SWITCH CIRCUIT.
Measure the voltage between harness connec-
tor terminal and chassis ground.
Connector & terminal
(B65) No. 4 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 3.•Check fuse No.
4 (in fuse & relay
box).
•Check for open
or short in the har-
ness between stop
light/brake switch
and fuse & relay
box.
3CHECK STOP LIGHT SWITCH AND BRAKE
SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of ECM.
3) Measure the resistance between ECM har-
ness connector terminal and stop light switch
and brake switch harness connector terminal.
Connector & terminal
(B135) No. 28 — (B65) No. 3:
(B135) No. 20 — (B65) No. 1:
Is the resistance less than 10
Ω?
Go to step 4.Repair the har-
ness.
4Check Stop Light Switch and Brake Switch
Remove and check the stop light switch and
brake switch. Brake Switch.>
Are the stop light switch and
brake switch OK?
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Replace the stop
light switch and
brake switch.

CC(ETC)(diag)-17
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
C: DTC 14 NEUTRAL POSITION SWITCH
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:
CC-00373
B136
ECM
C31
C:
B19
B55
TCM
B:
12341011 1219 20 21135614 1578916 17 1822 23 24
B55B:C:B136
16101112131415252430
9871718192028212223293231
123456
2726333435

CC(ETC)(diag)-18
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK NEUTRAL POSITION SWITCH.
1) Connect the Subaru Select Monitor to data
link connector.
2) Turn the ignition switch and Subaru Select
Monitor switch to ON.
3) Select {Engine} from the main menu.
4) Then, select {Current Data Display &
Save}.
5) Check the neutral position switch signal by
shifting the select lever to “P” or “N” range.
Is Subaru Select Monitor ON
when select lever is shifted into
“P” or “N” range? Is Subaru
Select Monitor OFF when
select lever is shifted to a
range other than the “P” or “N”
range?
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Go to step 2.
2CHECK TCM OUTPUT VOLTAGE.
1) Turn the ignition switch to ON.
2) Measure the voltage between TCM har-
ness connector terminal and chassis ground.
Connector & terminal
(B55) No. 19 (+) — Chassis ground (–):
Is voltage more than 10 V
when select lever is shifted to a
range other than “P” or “N”
range? Is voltage less than 1 V
when select lever is shifted into
“P” or “N” range?
Go to step 3.Check the TCM.
2, Basic Diagnos-
tic Procedure.>
3CHECK HARNESS BETWEEN TCM AND
ECM.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
TCM and ECM.
3) Measure the resistance between TCM har-
ness connector terminal and ECM harness
connector terminal.
Connector & terminal
(B136) No. 31 — (B55) No. 19:
Is the resistance less than 10
Ω?
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Repair the wiring
harness.

CC(ETC)(diag)-19
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
D: DTC 16 IGNITION SWITCH
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:
CC-00374
B135
ECM
B19
B:
MAIN SBFF/B NO.12SBF-6
BATTERYIGNITIONSWITCH
B:B135
5672134
29
101112131415252416
30
98171819202821222332312627333435

CC(ETC)(diag)-20
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
E: DTC 22 AND 32 VEHICLE SPEED SENSOR
DIAGNOSIS:
Open or short circuit in vehicle speed sensor system.
TROUBLE SYMPTOM:
Cruise control cannot be set. (Cancelled immediately.)
Step Check Yes No
1 CHECK IGNITION SWITCH CIRCUIT
1) Turn the ignition switch to OFF.
2) Disconnect the ECM harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B135) No. 19 (+) — Chassis ground (–):
Is the voltage more than 10 V? Check poor con-
tact of ECM con-
nector.
•Check fuse No.
12 (in fuse & relay
box).
•Check the har-
ness for open or
short circuit
between ignition
switch and ECM.
Step Check Yes No
1CHECK ABS WARNING LIGHT.
1) Turn the ignition switch to ON.
2) After the initial operation of combination
meter is completed, check if the VDC warning
light continues to illuminate.
Does the VDC warning light
continue to illuminate?
Check the
VDCCM. VDC(diag)-2,
Basic Diagnostic
Procedure.>
Go to step 2.
2CHECK LAN COMMUNICATION CIRCUIT
ERROR DISPLAY
Check if the communication error is displayed
on the odo/trip meter in combination meter.
Is the error code «Er xx» dis-
played on odo/trip meter?
Check the LAN
communication cir-
cuit. LAN(diag)-2, Basic
Diagnostic Proce-
dure.>
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>