EN(H6DO)(diag)-66
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
E: FUEL PUMP CIRCUIT
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03653
EE
M
10
76
56
NO.11
B362
R122
B135B:
B136C:
R58
7
B33C12
21
985
FUEL PUMPCONTROL UNIT
FUELPUMPECM
BATTERY
FUEL PUMPRELAY
B362
5678
3412
R1
B98218
23B98
R1
R15
R60712
R58
2
546
13
B135B:
567821943102422 23 2511 12 13 14 1526 2728
16 17 18 1920 2129 30 31 32 33 34 35
R122
34125891067
B98
123456 78910 1112 13 16 1714 15 18 19 2021222324
R60
12
10115634897131412
B136
16101112131415252430
9871718192028212223293231
123456
2726333435
C:
Step Check Yes No
1CHECK OPERATING SOUND OF FUEL
PUMP.
Make sure that the fuel pump operates for two
seconds when turning the ignition switch to ON.
NOTE:
Fuel pump operation can also be executed us-
ing Subaru Select Monitor.
Refer to “Compulsory Valve Operation Check
Mode” for procedures.
Mode.>
Does the fuel pump emit oper-
ating sound?
Check the fuel
injector circuit.
67, FUEL INJEC-
TOR CIRCUIT,
Diagnostics for
Engine Starting
Fa il u r e. >
Display DTC.
34, OPERATION,
Read Diagnostic
Tr o u b l e C o d e
(DTC).>
EN(H6DO)(diag)-67
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
F: FUEL INJECTOR CIRCUIT
CAUTION:
•Check or repair only faulty parts.
•After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03654
E6E17
E5E16
E43E44
12121212
109811
4248434445
ECMB137
E5E16E6E17
B21
E2
FUEL INJECTORNO. 1FUEL INJECTORNO. 2FUEL INJECTORNO. 3FUEL INJECTORNO. 4
BATTERY
1212
1213
4647
E43E44
FUEL INJECTORNO. 5FUEL INJECTORNO. 6
SBF-7
B47
MAIN RELAY
12
35
46
B47
3412
56
12
B21
123412131415567816171819910 1120212223 24 25 2627 28 29 3031 32 33
3534 37363938 41404342 4445 47464948 51505352 54
E
B137
85610 11 12 13 14 157213416
3019 20 2228 29
91718 2521 23 243126 27
Step Check Yes No
1CHECK OPERATION OF EACH FUEL INJEC-
TOR.
While cranking the engine, check each fuel
injector emits operating sound. Use a sound
scope or apply a screwdriver to the injector for
this check.
Does the fuel pump emit oper-
ating sound?
Check the fuel
pressure.
INSPECTION,
Fuel Pressure.>
Go to step 2.
EN(H6DO)(diag)-68
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
2CHECK POWER SUPPLY TO EACH FUEL
INJECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from fuel injector.
3) Turn the ignition switch to ON.
4) Measure the power supply voltage between
fuel injector terminal and engine ground.
Connector & terminal
#1 (E5) No. 2 (+) — Engine ground (–):
#2 (E16) No. 2 (+) — Engine ground (–):
#3 (E6) No. 2 (+) — Engine ground (–):
#4 (E17) No. 2 (+) — Engine ground (–):
#5 (E43) No. 2 (+) — Engine ground (–):
#6 (E44) No. 2 (+) — Engine ground (–):
Is the voltage more than 10 V? Go to step 3.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween main re-
lay and fuel
injector connec-
tor
•Poor contact
of main relay
connector
•Poor contact
of coupling con-
nector
•Poor contact
of fuel injector
connector
3CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
1) Disconnect the connectors from ECM.
2) Measure the resistance of harness
between ECM and fuel injector connector.
Connector & terminal
#1 (B137) No. 8 — (E5) No. 1:
#2 (B137) No. 9 — (E16) No. 1:
#3 (B137) No. 10 — (E6) No. 1:
#4 (B137) No. 11 — (E17) No. 1:
#5 (B137) No. 12 — (E43) No. 1:
#6 (B137) No. 13 — (E44) No. 1:
Is the resistance less than 1
Ω?
Go to step 4.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween ECM and
fuel injector
connector
•Poor contact
of coupling con-
nector
4CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR CONNECTOR.
Measure the resistance of harness between
ECM and fuel injector connector.
Connector & terminal
#1 (B137) No. 8 — Chassis ground:
#2 (B137) No. 9 — Chassis ground:
#3 (B137) No. 10 — Chassis ground:
#4 (B137) No. 11 — Chassis ground:
#5 (B137) No. 12 — Chassis ground:
#6 (B137) No. 13 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 5.Repair the ground
short circuit of har-
ness between
ECM and fuel
injector connector.
5CHECK EACH FUEL INJECTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between each fuel
injector terminals.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance between 5 —
20 Ω?
Go to step 6.Replace the faulty
fuel injector.
6CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Inspection using
“General Diagnos-
tic Table”
392, INSPEC-
TION, General
Diagnostic Table.>
Step Check Yes No
EN(H6DO)(diag)-69
List of Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
17.List of Diagnostic Trouble Code (DTC)
A: LIST
DTC Item Reference
P0011 Intake Camshaft Position Timing -
Over-Advanced (Bank 1)
tic Trouble Code (DTC).>
P0016 Crankshaft Position - Camshaft Posi-
tion Correlation (Bank 1)
Diagnostic Trouble Code (DTC).>
P0018 Crankshaft Position - Camshaft Posi-
tion Correlation (Bank 2)
Diagnostic Trouble Code (DTC).>
P0021 Intake Camshaft Position Timing -
Over-Advanced (Bank 2)
tic Trouble Code (DTC).>
P0026 Intake Valve Control Solenoid Circuit
Range/Performance (Bank 1)
with Diagnostic Trouble Code (DTC).>
P0028 Intake Valve Control Solenoid Circuit
Range/Performance (Bank 2)
with Diagnostic Trouble Code (DTC).>
P0030 HO2S Heater Control Circuit (Bank 1
Sensor 1)
Code (DTC).>
P0031 HO2S Heater Control Circuit Low
(Bank 1 Sensor 1)
Tr o u b l e C o d e ( D T C ) . >
P0032 HO2S Heater Control Circuit High
(Bank 1 Sensor 1)
Tr o u b l e C o d e ( D T C ) . >
P0037 HO2S Heater Control Circuit Low
(Bank 1 Sensor 2)
Tr o u b l e C o d e ( D T C ) . >
P0038 HO2S Heater Control Circuit High
(Bank 1 Sensor 2)
Tr o u b l e C o d e ( D T C ) . >
P0050 HO2S Heater Control Circuit (Bank 2
Sensor 1)
Code (DTC).>
P0051 HO2S Heater Control Circuit Low
(Bank 2 Sensor 1)
Tr o u b l e C o d e ( D T C ) . >
P0052 HO2S Heater Control Circuit High
(Bank 2 Sensor 1)
Tr o u b l e C o d e ( D T C ) . >
P0057 HO2S Heater Control Circuit Low
(Bank 2 Sensor 2)
Tr o u b l e C o d e ( D T C ) . >
P0058 HO2S Heater Control Circuit High
(Bank 2 Sensor 2)
Tr o u b l e C o d e ( D T C ) . >
P0068 MAP/MAF - Throttle Position Correla-
tion
(DTC).>
P0076 Intake Valve Control Circuit Low
(Bank 1)
(DTC).>
EN(H6DO)(diag)-70
List of Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
P0077 Intake Valve Control Circuit High
(Bank 1)
(DTC).>
P0082 Intake Valve Control Circuit Low
(Bank 2)
(DTC).>
P0083 Intake Valve Control Circuit High
(Bank 2)
(DTC).>
P0101 Mass or Volume Air Flow Circuit
Range/Performance
Tr o u b l e C o d e ( D T C ) . >
P0102 Mass or Volume Air Flow Circuit Low
Input
(DTC).>
P0103 Mass or Volume Air Flow Circuit High
Input
(DTC).>
P0107 Manifold Absolute Pressure/Baro-
metric Pressure Circuit Low Input
cedure with Diagnostic Trouble Code (DTC).>
P0108 Manifold Absolute Pressure/Baro-
metric Pressure Circuit High Input
cedure with Diagnostic Trouble Code (DTC).>
P0111 Intake Air Temperature Circuit
Range/Performance
Tr o u b l e C o d e ( D T C ) . >
P0112 Intake Air Temperature Circuit Low
Input
(DTC).>
P0113 Intake Air Temperature Circuit High
Input
(DTC).>
P0117 Engine Coolant Temperature Circuit
Low Input
Code (DTC).>
P0118 Engine Coolant Temperature Circuit
High Input
Code (DTC).>
P0122 Throttle/Pedal Position Sensor/
Switch “A” Circuit Low Input
Diagnostic Trouble Code (DTC).>
P0123 Throttle/Pedal Position Sensor/
Switch “A” Circuit High Input
Diagnostic Trouble Code (DTC).>
P0125 Insufficient Coolant Temperature For
Closed Loop Fuel Control
dure with Diagnostic Trouble Code (DTC).>
P0126 Insufficient Coolant Temperature for
Stable Operation
Diagnostic Trouble Code (DTC).>
P0128 Coolant Thermostat (Coolant Tem-
perature Below Thermostat Regulat-
ing Temperature)
PERATURE), Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0131 O2 Sensor Circuit Low Voltage (Bank
1 Sensor 1)
ble Code (DTC).>
DTC Item Reference
EN(H6DO)(diag)-71
List of Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
P0132 O2 Sensor Circuit High Voltage
(Bank 1 Sensor 1)
ble Code (DTC).>
P0133 O2 Sensor Circuit Slow Response
(Bank 1 Sensor 1)
Tr o u b l e C o d e ( D T C ) . >
P0134 O2 Sensor Circuit No Activity
Detected (Bank 1 Sensor 1)
Diagnostic Trouble Code (DTC).>
P0137 O2 Sensor Circuit Low Voltage (Bank
1 Sensor 2)
ble Code (DTC).>
P0138 O2 Sensor Circuit High Voltage
(Bank 1 Sensor 2)
ble Code (DTC).>
P0139 O2 Sensor Circuit Slow Response
(Bank 1 Sensor 2)
Tr o u b l e C o d e ( D T C ) . >
P0140 O2 Sensor Circuit No Activity
Detected (Bank 1 Sensor 2)
Diagnostic Trouble Code (DTC).>
P0151 O2 Sensor Circuit Low Voltage (Bank
2 Sensor 1)
ble Code (DTC).>
P0152 O2 Sensor Circuit High Voltage
(Bank 2 Sensor 1)
ble Code (DTC).>
P0153 O2 Sensor Circuit Slow Response
(Bank 2 Sensor 1)
Tr o u b l e C o d e ( D T C ) . >
P0154 O2 Sensor Circuit No Activity
Detected (Bank 2 Sensor 1)
Diagnostic Trouble Code (DTC).>
P0157 O2 Sensor Circuit Low Voltage (Bank
2 Sensor 2)
ble Code (DTC).>
P0158 O2 Sensor Circuit High Voltage
(Bank 2 Sensor 2)
ble Code (DTC).>
P0159 O2 Sensor Circuit Slow Response
(Bank 2 Sensor 2)
Tr o u b l e C o d e ( D T C ) . >
P0160 O2 Sensor Circuit No Activity
Detected (Bank 2 Sensor 2)
Diagnostic Trouble Code (DTC).>
P0171 System Too Lean (Bank 1)
P0172 System Too Rich (Bank 1)
P0174 System Too Lean (Bank 2)
P0175 System Too Rich (Bank 2)
P0181 Fuel Temperature Sensor “A” Circuit
Range/Performance
Diagnostic Trouble Code (DTC).>
DTC Item Reference
EN(H6DO)(diag)-72
List of Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
P0182 Fuel Temperature Sensor “A” Circuit
Low Input
ble Code (DTC).>
P0183 Fuel Temperature Sensor “A” Circuit
High Input
ble Code (DTC).>
P0196 Engine Oil Temperature Sensor Cir-
cuit Range/Performance
Diagnostic Trouble Code (DTC).>
P0197 Engine Oil Temperature Sensor Cir-
cuit Low
Code (DTC).>
P0198 Engine Oil Temperature Sensor Cir-
cuit High
Code (DTC).>
P0222 Throttle/Pedal Position Sensor/
Switch “B” Circuit Low Input
Diagnostic Trouble Code (DTC).>
P0223 Throttle/Pedal Position Sensor/
Switch “B” Circuit High Input
Diagnostic Trouble Code (DTC).>
P0230 Fuel Pump Primary Circuit
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0305 Cylinder 5 Misfire Detected
P0306 Cylinder 6 Misfire Detected
P0327 Knock Sensor 1 Circuit Low Input
(Bank 1 or Single Sensor)
Diagnostic Trouble Code (DTC).>
P0328 Knock Sensor 1 Circuit High Input
(Bank 1 or Single Sensor)
Diagnostic Trouble Code (DTC).>
P0332 Knock Sensor 2 Circuit Low Input
(Bank 2)
(DTC).>
P0333 Knock Sensor 2 Circuit High Input
(Bank 2)
(DTC).>
P0335 Crankshaft Position Sensor “A” Cir-
cuit
(DTC).>
P0336 Crankshaft Position Sensor “A” Cir-
cuit Range/Performance
Diagnostic Trouble Code (DTC).>
P0340 Camshaft Position Sensor “A” Circuit
(Bank 1 or Single Sensor)
with Diagnostic Trouble Code (DTC).>
DTC Item Reference
EN(H6DO)(diag)-73
List of Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
P0345 Camshaft Position Sensor “A” Circuit
(Bank 2)
Code (DTC).>
P0420 Catalyst System Efficiency Below
Threshold (Bank 1)
nostic Trouble Code (DTC).>
P0442 Evaporative Emission Control Sys-
tem Leak Detected (Small Leak)
dure with Diagnostic Trouble Code (DTC).>
P0447 Evaporative Emission Control Sys-
tem Vent Control Circuit Open
dure with Diagnostic Trouble Code (DTC).>
P0448 Evaporative Emission Control Sys-
tem Vent Control Circuit Shorted
Procedure with Diagnostic Trouble Code (DTC).>
P0451 Evaporative Emission Control Sys-
tem Pressure Sensor
Diagnostic Trouble Code (DTC).>
P0452 Evaporative Emission Control Sys-
tem Pressure Sensor Low Input
dure with Diagnostic Trouble Code (DTC).>
P0453 Evaporative Emission Control Sys-
tem Pressure Sensor High Input
dure with Diagnostic Trouble Code (DTC).>
P0456 Evaporative Emission Control Sys-
tem Leak Detected (Very Small
Leak)
Procedure with Diagnostic Trouble Code (DTC).>
P0457 Evaporative Emission Control Sys-
tem Leak Detected (Fuel Cap Loose/
Off)
nostic Procedure with Diagnostic Trouble Code (DTC).>
P0458 Evaporative Emission Control Sys-
tem Purge Control Valve Circuit Low
Procedure with Diagnostic Trouble Code (DTC).>
P0459 Evaporative Emission Control Sys-
tem Purge Control Valve Circuit High
Procedure with Diagnostic Trouble Code (DTC).>
P0461 Fuel Level Sensor Circuit Range/Per-
for mance
ble Code (DTC).>
P0462 Fuel Level Sensor Circuit Low Input
(DTC).>
P0463 Fuel Level Sensor Circuit High Input
(DTC).>
P0464 Fuel Level Sensor Circuit Intermittent
(DTC).>
P0483 Cooling Fan Rationality Check
P0500 Vehicle Speed Sensor
P0506 Idle Control System RPM Lower
Than Expected
Code (DTC).>
P0507 Idle Control System RPM Higher
Than Expected
Code (DTC).>
DTC Item Reference