SUBARU TRIBECA 2009 1.G Service Workshop Manual
Manufacturer: SUBARU, Model Year: 2009, Model line: TRIBECA, Model: SUBARU TRIBECA 2009 1.GPages: 2453, PDF Size: 46.32 MB
Page 171 of 2453
CC(ETC)(diag)-4
General Description
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
2. General Description
A: CAUTION
Airbag system wiring harness is routed near the cruise control command switch.
CAUTION:
•All airbag system wiring harnesses and connectors are colored yellow. Do not use electrical test
equipment on these circuits.
•Be careful not to damage the airbag system wiring harness when servicing the cruise control com-
mand switch.
B: PREPARATION TOOL
1. SPECIAL TOOL
2. GENERAL TOOL
C: INSPECTION
Measure the battery voltage and specific gravity of electrolyte.
Standard voltage:
12 V or more
Specific gravity:
1.260 or more
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
18482AA010 CARTRIDGE Troubleshooting for electrical system.
22771AA030 SUBARU SELECT
MONITOR KIT
Tr o u b l e s h o o t i n g f o r e l e c t r i c a l s y s t e m .
TOOL NAME REMARKS
Circuit tester Used for measuring resistance, voltage and current.
ST18482AA010
ST22771AA030
Page 172 of 2453
CC(ETC)(diag)-5
Electrical Component Location
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
3. Electrical Component Location
A: LOCATION
(1) Engine control module (ECM) (4) Cruise indicator light and cruise
set indicator light
(5) Transmission control module
(TCM)(2) Cruise control command switch
(3) Stop and brake switch
CC-00370
(3)
(1)
(2)
(5)
(4)
Page 173 of 2453
CC(ETC)(diag)-6
Engine Control Module (ECM) I/O Signal
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
4. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
B: WIRING DIAGRAM
DescriptionTe r m i n a l
No.
Measurement Condition and I/O Signal
(Idling with ignition ON: Except cruise set light)
Main power
supply
VB (CONTROL 1)
VB (CONTROL 2)
A7
B2
•Battery voltage is present when the main power is turned ON.
•“0 V” is present when the main power is turned OFF.
Command switch B24
•“0 V” is detected when the command switch is in CANCEL position.
•“Approx. 1 V” is present when the command switch is in SET/COAST position.
•“Approx. 3 V” is detected when the command switch is in RESUME/ACCEL
position.
•“Approx. 4 V” is detected when the command switch is released.
Brake switch 1
(Brake switch)B20•Battery voltage is present when the brake pedal is released.
•“0 V” is present when brake pedal is depressed.
Brake switch 2
(Stop light switch)B28•Battery voltage is present when brake pedal is depressed.
•“0 V” is present when the brake pedal is released.
Main switch B12•“0 V” is present while the main switch is pressed or turned on.
•Battery voltage is present when the main switch is turned OFF.
GroundGND (CONTROL 1)
GND (CONTROL 2)
A5
D7—
Ignition switch B19•Battery voltage is present when the ignition switch is turned ON.
•“0 V” is present when the ignition switch is turned OFF.
Neutral signal C31•Battery voltage is present when shift lever is in other than “P” or “N” position.
•“0 V” is detected when the shift lever is in “P” or “N” position.
CC-00197
B134
9
30 29 2832 3120 19 1822 211012 11142434 3327 2617 161234567132315258
B135
9
30 29 2832312022 211012 111424353327 2617 161234567132315258
B136
9
30 29 2832 3120 19 1822 211012 11142434 3327 2616123456132315258
B137
9
29 2820 19 182221101211142417 1612345671323152581819
34
71735303127 26
To D:To C:To B:To A:
Page 174 of 2453
CC(ETC)(diag)-7
Subaru Select Monitor
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
5. Subaru Select Monitor
A: OPERATION
1. GENERAL DESCRIPTION
The on-board diagnosis function of the cruise con-
trol system uses Subaru Select Monitor.
The on-board diagnosis function operates in two
categories, which are used depending on the type
of problems;
1) Cruise Control Cancel Conditions Diagnosis:
(1) This category of diagnosis requires actual
vehicle driving in order to determine the cause,
as when cruise speed is cancelled during driv-
ing although cruise cancel condition is not en-
tered.
(2) Cruise control memory in ECM stores the
cancel condition (Code No.) which occurred
during driving. When there are multiple cancel
conditions (Code No.), they are shown on the
Subaru Select Monitor.
CAUTION:
•The cruise control memory stores not only
the cruise “cancel” which occurred (although
“cancel” operation is not entered by the driver),
but also the “cancel” condition input by the
driver.
•The content of memory is cleared when igni-
tion switch or cruise control main switch is
turned OFF.
2) Real-time Diagnosis:
Real-time diagnosis function is used to determine
whether or not the input signal system is in good or-
der, according to signal emitted from switches, sen-
sors, etc.
(1) Vehicle cannot be driven at cruise speed
when the problem occurs in the cruise control
system or relevant circuits.
(2) Monitor the signal conditions from switches
and sensors.
2. CRUISE CONTROL CANCEL CONDI-
TIONS DIAGNOSIS
1) Prepare the Subaru Select Monitor kit.
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to Subaru Select Monitor.
4) Connect the Subaru Select Monitor to data link
connector.
(1) Data link connector is located in the lower
portion of the instrument panel (on the driver’s
side).
(2) Connect the diagnosis cable to data link
connector.
5) Start the engine and turn the cruise control main
switch to ON.
CC-00028
CC-00029
LAN00189
Page 175 of 2453
CC(ETC)(diag)-8
Subaru Select Monitor
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
6) Turn the Subaru Select Monitor switch to ON.
7) On the «Main Menu», select the {2. Each Sys-
tem Check} and press the [YES] key.
On the system selection display screen, select the
{Engine} and press the [YES] key. Press the [YES]
key after the information of engine type is dis-
played.
8) Drive vehicle at least 40 km/h (25 MPH) and set
the cruise control.
9) When the cruise speed is canceled by itself
(without any cancel operations), DTC will be dis-
played on the screen after selecting the {Check
Cancel Code} and pressing the [YES] key on the
engine malfunction diagnosis screen.
CAUTION:
•When performing diagnosis, observe the le-
gal speed limit on the road.
•DTC will be also displayed when cruise con-
trol is cancelled by driver. Do not confuse them.
•Get an assistant in the vehicle for help of di-
agnosis while driving.
NOTE:
DTC will be cleared by turning ignition switch or
cruise control main switch to OFF.
3. REAL-TIME DIAGNOSIS
1) Connect the Subaru Select Monitor.
2) Turn the ignition switch and cruise control main
switch to ON.
3) Turn the Subaru Select Monitor switch to ON.
4) On the «Main Menu», select the {2. Each Sys-
tem Check} and press the [YES] key.
5) On the «System Selection» display screen, se-
lect the {Engine} and press the [YES] key.
6) Press the [YES] key after the information of en-
gine type is displayed.
7) On the «Cruise Control Diagnosis» display
screen, select the {Current Data Display/Save},
and then press the [YES] key.
8) Make sure that normal display is shown when
operated as follows:
•Depress and release the brake pedal. (Stop light
switch and brake switch turn ON.)
•Turn the main switch to ON.
•Turn the «CANCEL» switch to ON.
•Turn the «SET/COAST» switch to ON.
•Turn the «RESUME/ACCEL» switch to ON.
•Depress or release the clutch pedal.
•Place the shift lever in any position other than
neutral.
NOTE:
•For details concerning operation procedure, re-
fer to the “SUBARU SELECT MONITOR OPERA-
TION MANUAL”.
•Refer to “List of Diagnostic Trouble Code (DTC)”
for DTC.
(1) Power switch
CC-00045
(1)
Page 176 of 2453
CC(ETC)(diag)-9
Diagnostics with Phenomenon
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
6. Diagnostics with Phenomenon
A: DIAGNOSTIC PROCEDURE WITH PHENOMENON
Phenomenon Checking item Reference
1
Cruise control main switch is
not turned to ON. (Cruise
indicator light does not illumi-
nate.)
(1) Check the cruise indicator
light.
Diagnostics with Phenomenon.>
(2) Check the cruise control
command switch.
Procedure with Diagnostic Trouble Code (DTC).>
2
Cruise control cannot be set. (1) Check the cruise control
command switch.
Procedure with Diagnostic Trouble Code (DTC).>
(2) Check stop light switch
and brake switch.
cedure with Diagnostic Trouble Code (DTC).>
(3) Check the neutral posi-
tion switch.
Tr o u b l e C o d e ( D T C ) . >
(4) Check vehicle speed sen-
sor.
Tr o u b l e C o d e ( D T C ) . >
3
Cruise set indicator light does
not illuminate.
Check the cruise set indicator
light.
Diagnostics with Phenomenon.>
4
Ve h i c l e s p e e d i s n o t h e l d
within set speed ±3 km/h (±2
MPH).
Check the vehicle speed sen-
sor.
Tr o u b l e C o d e ( D T C ) . >
5
Ve h i c l e s p e e d d o e s n o t
increase or does not return to
set speed after RESUME/
ACCEL switch has been
pressed.
Check the RESUME/ACCEL
switch.
Procedure with Diagnostic Trouble Code (DTC).>
6
Ve h i c l e s p e e d d o e s n o t
decrease after SET/COAST
switch has been pressed.
Check the SET/COAST
switch.
Procedure with Diagnostic Trouble Code (DTC).>
7
Cruise control is not released
after CANCEL switch has
been pressed.
Check the CANCEL switch.
Procedure with Diagnostic Trouble Code (DTC).>
8
Cruise control is not released
after brake pedal has been
depressed.
Check the stop light switch
and brake switch.
cedure with Diagnostic Trouble Code (DTC).>
9
Cruise control is not released
after shifting to the neutral
position.
Check the neutral position
switch.
Tr o u b l e C o d e ( D T C ) . >
Page 177 of 2453
CC(ETC)(diag)-10
Diagnostics with Phenomenon
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
B: CHECK CRUISE INDICATOR LIGHT AND CRUISE SET INDICATOR LIGHT.
TROUBLE SYMPTOM:
Cruise control can be set, but the cruise indicator light and cruise set indicator light do not illuminate.
Step Check Yes No
1CHECK CRUISE INDICATOR LIGHT AND
CRUISE SET INDICATOR LIGHT.
1) Perform the self-diagnosis of combination
meter.
2) Check the cruise indicator light and cruise
set indicator light if they illuminate.
Do the cruise indicator light &
cruise set indicator light illumi-
nate?
Go to step 2.Replace the meter
case assembly.
Meter.>
2CHECK LAN COMMUNICATION CIRCUIT
ERROR DISPLAY
1) Complete self-diagnosis, and turn the igni-
tion switch to ON again.
2) Check if the communication error is dis-
played 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.
Diagnostic Proce-
dure.>
Replace the ECM.
Engine Control
Module (ECM).>
Page 178 of 2453
CC(ETC)(diag)-11
List of Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
7. List of Diagnostic Trouble Code (DTC)
A: LIST
DTC Item Contents of diagnosis Reference
11 Main switch Main switch of cruise control command
switch is tur ned to OFF, and then the cr uise
control is released.
This DTC is displayed without operating the
main switch.
COMMAND SWITCH, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
12 Stop and brake switch Stop light switch or brake switch is turned to
ON, and then the cruise control is released.
This DTC is displayed without depressing
the brake pedal.
AND BRAKE SWITCH, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
14 Neutral switch Neutral position switch is turned to ON, and
then the cruise control is released.
This DTC is displayed without shifting to
neutral position.
Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>
15 Cancel switch Cancel switch is turned to ON, and then the
cruise control is released.
This DTC is displayed without operating the
cancel switch.
COMMAND SWITCH, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
16 Ignition switch Ignition switch is turned to OFF, and then the
cruise control is released.
This DTC is displayed without operating the
ignition switch.
Procedure with Diagnostic Trouble Code
(DTC).>
21 Cruise control switch mal-
function when ignition
switch is tur ned to ON
When the ignition switch is turned to ON,
each switch of cruise control command
switch is already tur ned to ON.
This DTC is displayed without operating the
main switch.
COMMAND SWITCH, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
22 Vehicle speed variation
malfunction
Malfunction of vehicle speed signal variation
is detected.
Procedure with Diagnostic Trouble Code
(DTC).>
23 Engine related sensor
malfunction
Malfunction related to engine is detected.
24 Cruise control related
switch malfunction
Command switch malfunction is detected.
(While the switch is pressed ON for an
abnormally long time (approximately two
minutes), open circuit is detected.)
This DTC is displayed with normal opera-
tion.
MAND SWITCH, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
25 Brake switch input circuit
malfunction
Malfunction of brake switch input circuit in
ECM is detected.
SWITCH, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
26 Engine speed signal • Abnormal increase of engine speed is
detected.
•Gear is placed in Neutral, 1st or Reverse
position.
Cruise in more than 2nd shift position.
Page 179 of 2453
CC(ETC)(diag)-12
List of Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
32 Out of vehicle speed of
cruise control operation
•Controlled vehicle speed decreased under
the limit during cruising.
•Set operation was performed at vehicle
speed unavailable for setting.
•Resume operation was performed with-
out memorized vehicle speed.
This DTC is displayed, though the vehicle
speed is increased to the speed available for
cruise set and set operation was performed
again.
nostic Procedure with Diagnostic Trouble
Code (DTC).>
33 WAIT is prohibited after
operating accelerator
pedal.
Controlled vehicle speed increased above
the limit during cruising.
This DTC is displayed when driving at higher
speed than appropriate cruise control
speed. In this case, lower the vehicle speed
to the speed available for cruise set, and
perform cruise set operation again.
34 Prohibited when accelera-
tor pedal position large is
continued.
The vehicle has been driven at higher speed
than set vehicle speed for an abnormally
long time (approximately 10 minutes) during
cruise driving.
This DTC is displayed when driving for a
long period of time at higher speed than
appropriate cruise set vehicle speed by
operating accelerator pedal. In this case,
release the cruise set.
35 Prohibited when vehicle
speed feedback unavail-
able.
Set vehicle speed cannot be kept because
of some reasons (steep uphill, parking
brake, abnormal decrease of engine output,
etc.) during cruise driving.
This DTC is displayed when driving condi-
tion is not suitable for cruise control. Perform
cruise set operation again after clearing the
possible cause.
41 VDC/TCS operation Vehicle dynamics control (VDC) or TCS is
operated during cruise driving or cruise set-
ting.
This DTC is displayed when driving condi-
tion is not suitable for cruise control. Perform
cruise set operation again after clearing the
possible cause.
43 ABS/VDC malfunction Vehicle dynamics control (VDC) system mal-
function is detected during cruise driving or
cruise setting.
44 Body integrated unit mal-
function
Body integrated unit system malfunction is
detected during cruise driving or cruise set-
ting.
45 Meter Failure Combination meter malfunction is detected
during cruise driving or cruise setting.
DTC Item Contents of diagnosis Reference
Page 180 of 2453
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: