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 1411 of 2453
EN(H6DO)(diag)-250
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
26 GROUP OF #1, #3 AND #5 CYLINDERS.Is there any fault in #1, #3 and
#5 cylinders?
Repair or replace
faulty par ts.
NOTE:
Check the follow-
ing item.
•Spark plug
•Fuel injector
•Skipping tim-
ing chain teeth
Check DTC
P0171, P0172,
P0174 or P0175
using “List of Diag-
nostic Trouble
Code (DTC)”.
69, List of Diag-
nostic Trouble
Code (DTC).>
27 GROUP OF #2, #4 AND #6 CYLINDERS.Is there any fault in #2, #4 and
#6 cylinders?
Repair or replace
faulty par ts.
NOTE:Check the follow-
ing item.
•Spark plug
•Fuel injector
•Compression
ratio
•Skipping tim-
ing chain teeth
Check DTC
P0171, P0172,
P0174 or P0175
using “List of Diag-
nostic Trouble
Code (DTC)”.
69, List of Diag-
nostic Trouble
Code (DTC).>
28 CYLINDER AT RANDOMIs the engine idle rough? Check DTC
P0171, P0172,
P0174 or P0175
using “List of Diag-
nostic Trouble
Code (DTC)”.
69, List of Diag-
nostic Trouble
Code (DTC).>
Repair or replace
faulty par ts.
NOTE:Check the follow-
ing item.
•Spark plug
•Fuel injector
•Compression
ratio
Step Check Yes No
Page 1412 of 2453
EN(H6DO)(diag)-251
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BT:DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW INPUT (BANK 1 OR SINGLE
SENSOR)
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION
TROUBLE SYMPTOM:
•Poor driving performance
•Knocking occurs.
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03663
152925
KNOCKSENSOR1(RH)
13
21
ECMB134
B20
E1B21
E2
B20
E1
E14
12
16
KNOCKSENSOR2(LH)
1414
19
13
E48E14
E48B20
1234567891011 121314 15 16
E
B134
85610 11 12 13 14 157213416
3019 20 2228 29
91718252123 24323126 2733 34
B21
12345678910 1112 13 14 15 16 17 18 19 20 21 2223 24 25 26 27 28 29 30 31 32 33
34 3542 4336 3738 39
48 4950 5152 5354
40 41444546 47
21
Page 1413 of 2453
EN(H6DO)(diag)-252
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS BETWEEN KNOCK SEN-
SOR AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance between ECM har-
ness connector and chassis ground.
Connector & terminal
(B134) No. 15 — Chassis ground:
Is the resistance more than
700 kΩ?
Go to step 2.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween knock
sensor and
ECM connector
•Poor contact
of knock sensor
connector
•Poor contact
of coupling con-
nector
2CHECK KNOCK SENSOR.
1) Disconnect the connector from knock sen-
sor.
2) Measure the resistance between knock
sensor connector terminal and engine ground.
Te r m i n a l s
No. 2 — Engine ground:
Is the resistance more than
700 kΩ?
Go to step 3.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Poor contact
of knock sensor
connector
3CHECK INSTALLATION CONDITION OF
KNOCK SENSOR
Is the knock sensor installation
bolt tightened securely?
Replace the knock
sensor.
Knock Sensor.>
Tighten the knock
sensor installation
bolt securely.
Page 1414 of 2453
EN(H6DO)(diag)-253
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BU:DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH INPUT (BANK 1 OR SINGLE
SENSOR)
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION
TROUBLE SYMPTOM:
•Poor driving performance
•Knocking occurs.
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03663
152925
KNOCKSENSOR1(RH)
13
21
ECMB134
B20
E1B21
E2
B20
E1
E14
12
16
KNOCKSENSOR2(LH)
1414
19
13
E48E14
E48B20
1234567891011 121314 15 16
E
B134
85610 11 12 13 14 157213416
3019 20 2228 29
91718252123 24323126 2733 34
B21
12345678910 1112 13 14 15 16 17 18 19 20 21 2223 24 25 26 27 28 29 30 31 32 33
34 3542 4336 3738 39
48 4950 5152 5354
40 41444546 47
21
Page 1415 of 2453
EN(H6DO)(diag)-254
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS BETWEEN KNOCK SEN-
SOR AND ECM CONNECTOR.
Measure the resistance of harness between
ECM connector and chassis ground.
Connector & terminal
(B134) No. 15 — Chassis ground:
Is the resistance less than 400
kΩ?
Go to step 2.Go to step 3.
2CHECK KNOCK SENSOR.
1) Disconnect the connector from knock sen-
sor.
2) Measure the resistance between knock
sensor connector terminal and engine ground.
Te r m i n a l s
No. 2 — Engine ground:
Is the resistance less than 400
kΩ?
Replace the knock
sensor.
Knock Sensor.>
Repair the ground
short circuit of har-
ness between
knock sensor con-
nector and ECM
connector.
NOTE:
The harness be-
tween both con-
nectors are
shielded. Repair
the short circuit of
harness covered
with shield.
3CHECK INPUT SIGNAL OF ECM.
1) Connect the connectors to ECM and knock
sensor.
2) Turn the ignition switch to ON.
3) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B134) No. 15 (+) — Chassis ground (–):
Is the voltage more than 2 V? Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.(However,
the possibility of
poor contact still
remains.)
NOTE:In this case, repair
the following item:
•Poor contact
of knock sensor
connector
•Poor contact
in ECM connec-
tor
•Poor contact
of coupling con-
nector
Repair poor con-
tact in ECM con-
nector.
Page 1416 of 2453
EN(H6DO)(diag)-255
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BV:DTC P0332 KNOCK SENSOR 2 CIRCUIT LOW INPUT (BANK 2)
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION
TROUBLE SYMPTOM:
•Driving performance problem
•Knocking is occurred.
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03663
152925
KNOCKSENSOR1(RH)
13
21
ECMB134
B20
E1B21
E2
B20
E1
E14
12
16
KNOCKSENSOR2(LH)
1414
19
13
E48E14
E48B20
1234567891011 121314 15 16
E
B134
85610 11 12 13 14 157213416
3019 20 2228 29
91718252123 24323126 2733 34
B21
12345678910 1112 13 14 15 16 17 18 19 20 21 2223 24 25 26 27 28 29 30 31 32 33
34 3542 4336 3738 39
48 4950 5152 5354
40 41444546 47
21
Page 1417 of 2453
EN(H6DO)(diag)-256
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS BETWEEN KNOCK SEN-
SOR AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance between ECM har-
ness connector and chassis ground.
Connector & terminal
(B134) No. 16 — Chassis ground:
Is the resistance more than
700 kΩ?
Go to step 2.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween knock
sensor and
ECM connector
•Poor contact
of knock sensor
connector
•Poor contact
of coupling con-
nector
2CHECK KNOCK SENSOR.
1) Disconnect the connector from knock sen-
sor.
2) Measure the resistance between knock
sensor connector terminal and engine ground.
Te r m i n a l s
No. 2 — Engine ground:
Is the resistance more than
700 kΩ?
Go to step 3.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Poor contact
of knock sensor
connector
3CHECK INSTALLATION CONDITION OF
KNOCK SENSOR
Is the knock sensor installation
bolt tightened securely?
Replace the knock
sensor.
Knock Sensor.>
Tighten the knock
sensor installation
bolt securely.
Page 1418 of 2453
EN(H6DO)(diag)-257
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BW:DTC P0333 KNOCK SENSOR 2 CIRCUIT HIGH INPUT (BANK 2)
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION
TROUBLE SYMPTOM:
•Driving performance problem
•Knocking occurs.
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03663
152925
KNOCKSENSOR1(RH)
13
21
ECMB134
B20
E1B21
E2
B20
E1
E14
12
16
KNOCKSENSOR2(LH)
1414
19
13
E48E14
E48B20
1234567891011 121314 15 16
E
B134
85610 11 12 13 14 157213416
3019 20 2228 29
91718252123 24323126 2733 34
B21
12345678910 1112 13 14 15 16 17 18 19 20 21 2223 24 25 26 27 28 29 30 31 32 33
34 3542 4336 3738 39
48 4950 5152 5354
40 41444546 47
21
Page 1419 of 2453
EN(H6DO)(diag)-258
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS BETWEEN KNOCK SEN-
SOR AND ECM CONNECTOR.
Measure the resistance of harness between
ECM connector and chassis ground.
Connector & terminal
(B134) No. 16 — Chassis ground:
Is the resistance less than 400
kΩ?
Go to step 2.Go to step 3.
2CHECK KNOCK SENSOR.
1) Disconnect the connector from knock sen-
sor.
2) Measure the resistance between knock
sensor connector terminal and engine ground.
Te r m i n a l s
No. 2 — Engine ground:
Is the resistance less than 400
kΩ?
Replace the knock
sensor.
Knock Sensor.>
Repair the ground
short circuit of har-
ness between
knock sensor con-
nector and ECM
connector.
NOTE:
The harness be-
tween both con-
nectors are
shielded. Repair
the short circuit of
harness covered
with shield.
3CHECK INPUT SIGNAL OF ECM.
1) Connect the connectors to ECM and knock
sensor.
2) Turn the ignition switch to ON.
3) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B134) No. 16 (+) — Chassis ground (–):
Is the voltage more than 2 V? Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time. (How-
ever, the possibility
of poor contact still
remains.)
NOTE:In this case, repair
the following item:
•Poor contact
of knock sensor
connector
•Poor contact
in ECM connec-
tor
•Poor contact
of coupling con-
nector
Repair poor con-
tact in ECM con-
nector.
Page 1420 of 2453
EN(H6DO)(diag)-259
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BX:DTC P0335 CRANKSHAFT POSITION SENSOR “A” CIRCUIT
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION
TROUBLE SYMPTOM:
•Engine stalls.
•Failure of engine to start
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03664
12
87
1424
B20
E1
E10
E10
12
B134 ECM
CRANKSHAFTPOSITIONSENSOR
13
E
B20
1234567891011 121314 15 16
B134
85610 11 12 13 14 157213416
3019 20 2228 29
91718252123 24323126 2733 34