EN(H6DO)(diag)-362
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK ELECTRONIC THROTTLE CON-
TROL RELAY.
1) Turn the ignition switch to OFF.
2) Remove the electronic throttle control relay.
3) Connect the battery to terminals No. 5 and
No. 6 of electronic throttle control relay.
4) Measure the resistance between electronic
throttle control relay terminals.
Te r m i n a l s
No. 7 — No. 8:
Is the resistance less than 1
Ω?
Go to step 2.Replace the elec-
tronic throttle con-
trol relay.
2CHECK POWER SUPPLY OF ELECTRONIC
THROTTLE CONTROL RELAY.
Measure the voltage between electronic throt-
tle control relay connector and chassis ground.
Connector & terminal
(B362) No. 7 (+) — Chassis ground (–):
(B362) No. 5 (+) — Chassis ground (–):
Is the voltage more than 5 V? Go to step 3.Repair the open or
ground short cir-
cuit of power sup-
ply circuit.
3CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL RE-
LAY.
1) Disconnect the connectors from ECM.
2) Turn the ignition switch to ON.
3) Measure the voltage between electronic
throttle control relay connector and chassis
ground.
Connector & terminal
(B362) No. 6 (+) — Chassis ground (–):
Is the voltage less than 5 V? Go to step 4.Repair the power
supply short cir-
cuit of harness
between ECM and
electronic throttle
control.
4CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL RE-
LAY.
1) Turn the ignition switch to OFF.
2) Measure the resistance between electronic
throttle control relay connector and chassis
ground.
Connector & terminal
(B362) No. 6 — Chassis ground:
(B362) No. 8 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 5.Repair the ground
short circuit of har-
ness between
ECM and elec-
tronic throttle con-
trol relay.
5CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL RE-
LAY.
Measure the resistance between ECM connec-
tor and electronic throttle control relay connec-
tor.
Connector & terminal
(B136) No. 21 — (B362) No. 6:
(B136) No. 1 — (B362) No. 8:
Is the resistance less than 1
Ω?
Go to step 6.Repair the open
circuit of harness
between ECM and
electronic throttle
control relay.
6CHECK SENSOR OUTPUT.
1) Connect all the connectors.
2) Turn the ignition switch to ON.
3) Read the data of main throttle sensor signal
using Subaru Select Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage more than 0.4 V? Go to step 7.Go to step 9.
EN(H6DO)(diag)-363
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
7CHECK SENSOR OUTPUT.
Read the data of sub throttle sensor signal
using Subaru Select Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage more than 0.8 V? Go to step 8.Go to step 9.
8CHECK POOR CONTACT.
Check poor contact in connector between
ECM and electronic throttle control.
Is there poor contact? Repair the poor
contact.
Go to step 13.
9CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from electronic
throttle control.
4) Measure the resistance between ECM con-
nector and electronic throttle control connector.
Connector & terminal
(B134) No. 18 — (E57) No. 6:
(B134) No. 28 — (E57) No. 4:
(B134) No. 19 — (E57) No. 5:
Is the resistance less than 1
Ω?
Go to step 10.Repair the open
circuit of harness
connector.
10 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
Measure the resistance between ECM connec-
tor and chassis ground.
Connector & terminal
(B136) No. 18 — Chassis ground:
(B136) No. 28 — Chassis ground:
(B136) No. 19 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 11.Repair the ground
short circuit of har-
ness.
11 CHECK SENSOR POWER SUPPLY.
1) Connect the ECM connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between electronic
throttle control connector and engine ground.
Connector & terminal
(E57) No. 5 (+) — Engine ground (–):
Is the voltage 4.5 — 5.5 V? Go to step 12.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
12 CHECK SHORT CIRCUIT IN ECM.
1) Turn the ignition switch to OFF.
2) Measure the resistance between electronic
throttle control connector and engine ground.
Connector & terminal
(E57) No. 6 — Engine ground:
(E57) No. 4 — Engine ground:
Is the resistance more than
10Ω?
Go to step 13.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
13 CHECK SENSOR OUTPUT.
1) Connect all the connectors.
2) Turn the ignition switch to ON.
3) Read the data of main throttle sensor signal
using Subaru Select Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage 4.63 V? Go to step 14.Go to step 16.
Step Check Yes No
EN(H6DO)(diag)-364
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
14 CHECK SENSOR OUTPUT.
Read the data of sub throttle sensor signal
using Subaru Select Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage 4.73 V? Go to step 15.Go to step 16.
15 CHECK POOR CONTACT.
Check poor contact in connector between
ECM and electronic throttle control.
Is there poor contact? Repair the poor
contact.
Go to step 21.
16 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from electronic
throttle control.
4) Measure the resistance between ECM con-
nector and electronic throttle control connector.
Connector & terminal
(B134) No. 29 — (E57) No. 3:
(B134) No. 18 — (E57) No. 6:
(B134) No. 28 — (E57) No. 4:
Is the resistance less than 1
Ω?
Go to step 17.Repair the open
circuit of harness
connector.
17 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
1) Connect the ECM connector.
2) Measure the resistance between electronic
throttle control connector and engine ground.
Connector & terminal
(E57) No. 3 — Engine ground:
Is the resistance less than 5
Ω?
Go to step 18.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
18 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
1) Turn the ignition switch to ON.
2) Measure the voltage between electronic
throttle control connector and engine ground.
Connector & terminal
(E57) No. 5 (+) — Engine ground (–):
Is the voltage less than 10 V? Go to step 19.Repair the battery
short circuit of har-
ness between
ECM connector
and electronic
throttle control
connector.
19 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
Measure the voltage between electronic throt-
tle control connector and engine ground.
Connector & terminal
(E57) No. 6 (+) — Engine ground (–):
(E57) No. 4 (+) — Engine ground (–):
Is the voltage less than 10 V? Go to step 20.Repair the short
circuit of harness
between ECM
connector and
electronic throttle
control connector.
20 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL.
1) Turn the ignition switch to OFF.
2) Remove the ECM.
3) Measure the resistance between ECM con-
nectors.
Connector & terminal
(B134) No. 18 — (B134) No. 19:
(B134) No. 28 — (B134) No. 19:
Is the resistance more than 1
MΩ?
Go to step 21.Repair the short
circuit to sensor
power supply.
Step Check Yes No
EN(H6DO)(diag)-365
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
21 CHECK SENSOR OUTPUT.
1) Turn the ignition switch to OFF.
2) Connect the connectors except for electric
throttle control relay.
3) Turn the ignition switch to ON.
4) Read the data of main throttle sensor signal
using Subaru Select Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage 0.81 — 0.87 V? Go to step 22.Repair the poor
contact of elec-
tronic throttle con-
trol connector.
Replace the elec-
tronic throttle con-
trol if defective.
22 CHECK SENSOR OUTPUT.
Read the data of sub throttle sensor signal
using Subaru Select Monitor.
NOTE:
•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage 1.64 — 1.70 V? Go to step 23.Repair poor con-
tact in ECM con-
nector. Replace
the electronic
throttle control if
defective.
23 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL MO-
TOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from electronic
throttle control.
4) Measure the resistance between ECM con-
nector and electronic throttle control connector.
Connector & terminal
(B137) No. 5 — (E57) No. 2:
(B137) No. 4 — (E57) No. 1:
Is the resistance less than 1
Ω?
Go to step 24.Repair the open
circuit of harness
connector.
24 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL MO-
TOR.
1) Connect the connector to ECM.
2) Turn the ignition switch to ON.
3) Measure the voltage between electronic
throttle control connector and engine ground.
Connector & terminal
(E57) No. 2 (+) — Engine ground (–):
(E57) No. 1 (+) — Engine ground (–):
Is the voltage less than 5 V? Go to step 25.Repair the power
supply short cir-
cuit of harness
between ECM and
electronic throttle
control.
25 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL MO-
TOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance between electronic
throttle control connector and engine ground.
Connector & terminal
(E57) No. 2 — Engine ground:
(E57) No. 1 — Engine ground:
Is the resistance more than 1
MΩ?
Go to step 26.Repair the short
circuit of harness.
26 CHECK ELECTRONIC THROTTLE CON-
TROL MOTOR HARNESS.
Measure the resistance between electronic
throttle control connector terminals.
Connector & terminal
(E57) No. 2 — (E57) No. 1:
Is the resistance more than 1
MΩ?
Go to step 27.Repair the short
circuit of harness.
Step Check Yes No
EN(H6DO)(diag)-373
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK ACCELERATOR PEDAL POSITION
SENSOR OUTPUT.
1) Turn the ignition switch to ON.
2) Read the data of main accelerator pedal
position sensor signal using Subaru Select
Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage more than 0.4 V? Go to step 2.Go to step 3.
2CHECK POOR CONTACT.
Check poor contact of connector between
ECM and accelerator pedal position sensor.
Is there poor contact? Repair the poor
contact.
Te m p o r a r y p o o r
contact occurred,
but it is normal at
present.
3CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from accelerator
pedal position sensor.
4) Measure the resistance between ECM con-
nector and accelerator pedal position sensor
connector.
Connector & terminal
(B135) No. 23 — (B315) No. 6:
(B135) No. 21 — (B315) No. 4:
Is the resistance less than 1
Ω?
Go to step 4.Repair the open
circuit of harness
connector.
4CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
Measure the resistance between ECM connec-
tor and chassis ground.
Connector & terminal
(B135) No. 23 — Chassis ground:
(B135) No. 21 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 5.Repair the chas-
sis short circuit of
harness.
5CHECK POWER SUPPLY OF ACCELERA-
TOR PEDAL POSITION SENSOR.
1) Connect the ECM connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between accelerator
pedal position sensor connector and engine
ground.
Connector & terminal
(B315) No. 4 (+) — Engine ground (–):
Is the voltage 4.5 — 5.5 V? Go to step 6.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
6CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor.
Te r m i n a l s
No. 4 — No. 5:
Is the resistance between 1.2
and 4.8 kΩ?
Go to step 7.Replace the accel-
erator pedal posi-
tion sensor.
7CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor.
Te r m i n a l s
No. 6 — No. 5:
Check the measured value is within the specifi-
cation without depressing the accelerator
pedal.
Is the resistance between 0.2
and 1.0 kΩ?
Go to step 8.Replace the accel-
erator pedal posi-
tion sensor.
EN(H6DO)(diag)-376
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK ACCELERATOR PEDAL POSITION
SENSOR OUTPUT.
1) Turn the ignition switch to ON.
2) Read the data of main accelerator pedal
position sensor signal using Subaru Select
Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage less than 4.8 V? Go to step 2.Go to step 3.
2CHECK POOR CONTACT.
Check poor contact of connector between
ECM and accelerator pedal position sensor.
Is there poor contact? Repair the poor
contact.
Te m p o r a r y p o o r
contact occurred,
but it is normal at
present.
3CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from accelerator
pedal position sensor.
4) Measure the resistance between ECM con-
nector and accelerator pedal position sensor
connector.
Connector & terminal
(B135) No. 29 — (B315) No. 5:
Is the resistance less than 1
Ω?
Go to step 4.Repair the open
circuit of harness
connector.
4CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Connect the ECM connector.
2) Measure the resistance between accelera-
tor pedal position sensor connector and engine
ground.
Connector & terminal
(B315) No. 5 — Engine ground:
Is the resistance less than 5
Ω?
Go to step 5.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
5CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Connect the ECM connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between accelerator
pedal position sensor connector and engine
ground.
Connector & terminal
(B315) No. 6 (+) — Engine ground (–):
Is the voltage less than 6 V? Go to step 6.Repair the battery
short circuit of har-
ness between
ECM connector
and accelerator
pedal position sen-
sor connector.
6CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance between ECM con-
nectors.
Connector & terminal
(B135) No. 23 — (B135) No. 21:
(B135) No. 23 — (B135) No. 22:
Is the resistance more than 1
MΩ?
Repair the poor
contact of acceler-
ator pedal position
sensor connector.
Replace the accel-
erator pedal posi-
tion sensor if
defective.
Repair the short
circuit to sensor
power supply.
EN(H6DO)(diag)-378
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK ACCELERATOR PEDAL POSITION
SENSOR OUTPUT.
1) Turn the ignition switch to ON.
2) Read the data of sub accelerator pedal
position sensor signal using Subaru Select
Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage more than 0.4 V? Go to step 2.Go to step 3.
2CHECK POOR CONTACT.
Check poor contact of connector between
ECM and accelerator pedal position sensor.
Is there poor contact? Repair the poor
contact.
Te m p o r a r y p o o r
contact occurred,
but it is normal at
present.
3CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from accelerator
pedal position sensor.
4) Measure the resistance between ECM con-
nector and accelerator pedal position sensor
connector.
Connector & terminal
(B135) No. 31 — (B315) No. 3:
(B135) No. 22 — (B315) No. 1:
Is the resistance less than 1
Ω?
Go to step 4.Repair the open
circuit of harness
connector.
4CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
Measure the resistance between ECM connec-
tor and chassis ground.
Connector & terminal
(B135) No. 31 — Chassis ground:
(B135) No. 22 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 5.Repair the chas-
sis short circuit of
harness.
5CHECK POWER SUPPLY OF ACCELERA-
TOR PEDAL POSITION SENSOR.
1) Connect the ECM connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between accelerator
pedal position sensor connector and engine
ground.
Connector & terminal
(B315) No. 1 (+) — Engine ground (–):
Is the voltage 4.5 — 5.5 V? Go to step 6.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
6CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance between 0.75
and 3.15 kΩ?
Go to step 7.Replace the accel-
erator pedal posi-
tion sensor.
7CHECK ACCELERATOR PEDAL POSITION
SENSOR.
1) Measure the resistance of accelerator
pedal position sensor.
Te r m i n a l s
No. 3 — No. 2:
2) Check the measured value is within the
specification without depressing the accelera-
tor pedal.
Is the resistance between 0.15
and 0.63 kΩ?
Go to step 8.Replace the accel-
erator pedal posi-
tion sensor.
EN(H6DO)(diag)-381
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK ACCELERATOR PEDAL POSITION
SENSOR OUTPUT.
1) Turn the ignition switch to ON.
2) Read the data of sub accelerator pedal
position sensor signal using Subaru Select
Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”.
tor.>
Is the voltage less than 4.8 V? Go to step 2.Go to step 3.
2CHECK POOR CONTACT.
Check poor contact of connector between
ECM and accelerator pedal position sensor.
Is there poor contact? Repair the poor
contact.
Te m p o r a r y p o o r
contact occurred,
but it is normal at
present.
3CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Disconnect the connectors from accelerator
pedal position sensor.
4) Measure the resistance between ECM con-
nector and accelerator pedal position sensor
connector.
Connector & terminal
(B135) No. 30 — (B315) No. 2:
Is the resistance less than 1
Ω?
Go to step 4.Repair the open
circuit of harness
connector.
4CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Connect the ECM connector.
2) Measure the resistance between accelera-
tor pedal position sensor connector and engine
ground.
Connector & terminal
(B315) No. 2 — Engine ground:
Is the resistance less than 5
Ω?
Go to step 5.Repair poor con-
tact in ECM con-
nector. Replace
the ECM if defec-
tive.
Engine Control
Module (ECM).>
5CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Connect the ECM connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between accelerator
pedal position sensor connector and engine
ground.
Connector & terminal
(B315) No. 3 (+) — Engine ground (–):
Is the voltage less than 6 V? Go to step 6.Repair the battery
short circuit of har-
ness between
ECM connector
and accelerator
pedal position sen-
sor connector.
6CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR PEDAL POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance between ECM con-
nectors.
Connector & terminal
(B135) No. 31 — (B135) No. 21:
(B135) No. 31 — (B135) No. 22:
Is the resistance more than 1
MΩ?
Repair the poor
contact of acceler-
ator pedal position
sensor connector.
Replace the accel-
erator pedal posi-
tion sensor if
defective.
Repair the short
circuit to sensor
power supply.