EN(H6DO)(diag)-57
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
16.Diagnostics for Engine Starting Failure
A: PROCEDURE
1. Check for fuel amount.
↓
2. Inspection of starter motor circuit.
↓
3. Inspection of ECM power supply and ground line.
↓
4. Inspection of ignition control system.
↓
5. Inspection of fuel pump circuit
↓
6. Inspection of fuel injector circuit
EN(H6DO)(diag)-58
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
B: STARTER MOTOR CIRCUIT
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03735
3220
NO.21
B225
MAIN SBFSBF-6
E
1513
1614
ECM
B136
B72
B14
M
23
B72B225
101112
131415 16
17181920
21222324
25262728
293031 32
333435 36 39 40
3738
129
34
56
78
134562
BATTERY
IGNITIONSWITCH
STARTERRELAYSTARTER MOTOR
B136
16101112131415252430
9871718192028212223293231
123456
2726333435
EN(H6DO)(diag)-61
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
C: CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MOD-
ULE (ECM)
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03736
SBF-6MAIN SBF
SBF-7
B72
B2A7C23
D7D3D1A5
B5B19
NO.12B47
E2
B21
12
46
53
ECM
EE
36
B134A:
D:B137
B135B:
B136C:
A3
52373634
3412
56
B47
TO OXYGEN SENSOR
NO.13
D2
35
B21
123412131415567816171819910 1120212223 24 25 2627 28 29 3031 32 33
3534 37363938 41404342 4445 47464948 51505352 54
B72
134562
B134
56 7821943102422 23 2511 12 13 14 1526 2728
16 1718 19 20 2133 34293230 31
A:B135
567821943102422 23 2511 12 13 14 1526 2728
16 17 18 1920 2129 30 31 32 33 34 35
B:
B137
5678219431022 2311 12 13 14 1524 2526
16 1718 19 20 2127 28 29 30 31
D:
SBF-5
D6D26
54
MAIN RELAY
BATTERYIGNITIONSWITCH
B136
16101112131415252430
9871718192028212223293231
123456
2726333435
C:
Step Check Yes No
1CHECK MAIN RELAY
1) Turn the ignition switch to OFF.
2) Remove the main relay.
3) Connect the battery to main relay terminals
No. 1 and No. 2.
4) Measure the resistance between main relay
terminals.
Te r m i n a l s
No. 3 — No. 5:
No. 4 — No. 6:
Is the resistance less than 10
Ω?
Go to step 2.Replace the main
relay.
EN(H6DO)(diag)-63
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
D: IGNITION CONTROL SYSTEM
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode
WIRING DIAGRAM:
EN-03652
E34
E45
E31
E32
E46E33
123
ECMB137
231918212220
SBF-746
B327
E46
E2
B21
E32
1814131617
32312E3432E4532
1549
111E31312E33312
12
B225
B21
123412131415567816171819910 1120212223 24 25 2627 28 29 3031 32 33
3534 37363938 41404342 4445 47464948 51505352 54
91012
34
56
78
11 121415 16
131819 20
172223 24
21
3839 40
373435 36
333031 32
292627 28
25
B225B327
3412
56
EE
OXYGEN SENSORRELAY
IGNITION COILNO. 1
RELAY HOLDER
IGNITION COIL NO. 2IGNITION COILNO. 3IGNITION COILNO. 4IGNITION COILNO. 5IGNITION COILNO. 6
B137
85610 11 12 13 14 157213416
3019 20 2228 29
91718 2521 23 243126 27
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)-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