starter SUBARU FORESTER 2004 Service Owner's Manual

EN(H4SO)-16
ENGINE (DIAGNOSTIC)
Electrical Component Location
 LHD MODEL
 RHD MODEL
(1) Inhibitor switch (4) Fuel pump relay (7) Starter
(2) Fuel pump (5) Radiator main fan relay
(3) Main relay (6) Radiator sub fan relay
EN-00251
(3)
(4)
EN-02400
EN-00252 (1)
(3) (7) (6)(5)(4)
(2)
EN-00253
(7) (6)(5)
(2)(3)(4)(1)

EN(H4SO)-21
ENGINE (DIAGNOSTIC)
Engine Control Module (ECM) I/O Signal
5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
DESCRIPTION Connector No. Terminal No.Signal (V)
NOTE
Ignition SW ON
(engine OFF)Engine ON
(Idling)
Crank-
shaft posi-
tion sensorSignal (+) B135 6 0−7 — +7 Sensor output waveform
Signal (−) B135 17 0 0 —
Shield B135 28 0 0 —
Camshaft
position
sensorSignal (+) B135 7 0−7 — +7 Sensor output waveform
Signal (−) B135 18 0 0 —
Shield B135 28 0 0 —
Throttle
position
sensorSignal B135 13Fully closed: 0.2 — 1.0
Fully opened: 4.2 — 4.7—
Pow er
supplyB135 3 5 5 —
GND
(sensor)B135 19 0 0 —
Rear oxy-
gen sensorSignal B135 14 0 0 — 0.9 —
Shield B137 15 0 0 —
GND
(sensor)B135 19 0 0 —
Fr o nt ox y-
gen (A/F)
sensor
heaterSignal 1 B136 13 0 — 1.0 0 — 1.0 —
Signal 2 B136 22 0 — 1.0 0 — 1.0 —
Rear oxygen sensor
heater signalB136 4 0 — 1.0 0 — 1.0 —
Engine
coolant
tempera-
ture sen-
sorSignal B135 12 1.0 — 1.4 1.0 — 1.4 After engine is warmed-up.
GND
(sensor)B135 19 0 0 After engine is warmed-up.
Vehicle speed signal B137 10 0 or 5 0 or 5“5” and “0” are repeatedly dis-
played when vehicle is driven.
Starter switch B136 20 0 0 Cranking: 8 — 14
EN-00258
B135B134
B137B136
1234567891011121314151617181920
1 2 3 4
5
6
7 8
910 11 12 13 14 15
16
17 18
19 20 21
22 23
24
25 26 27
28
29
30 31 32
33
34 351 2 3
4
5
6
7
8 910 11
12
13 14
15 16 17
18 19
20
21 22
23 24 25
26 27
28
1 2
3
4 5 6
7
8
910
11 12
13 14 15 16
17
18 19 20 21 22 23
24
25 26
To
To
To To

EN(H4SO)-31
ENGINE (DIAGNOSTIC)
Subaru Select Monitor
NOTE:
For detailed operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MANUAL”.
Engine torque control permission signalAT coordinate permission sig-
nalON or OFF
Rear oxygen sensor rich signal Rear O2 monitor ON or OFF
Starter switch signal Starter SW ON or OFF
Idle switch signal Soft idle SW ON or OFF
Crankshaft position sensor signal Crankshaft position signal ON or OFF
Camshaft position sensor signal Camshaft position signal ON or OFF
Rear defogger switch signal Rear defogger SW ON or OFF
Blower fan switch signal Blower fan SW ON or OFF
Small light switch signal Light SW ON or OFF
AT vehicle ID signal AT/MT identification terminal AT or MT
A/C middle pressure switch signal A/C middle pressure SW ON or OFFDescription Display Unit of measure

EN(H4SO)-34
ENGINE (DIAGNOSTIC)
Subaru Select Monitor
7. LED OPERATION MODE FOR ENGINE
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Engine} and press the [YES] key.
3) Press the [YES] key after the information of engine type was displayed.
4) On the «Engine Diagnosis» display screen, select the {Current Data Display/Save}, and then press the
[YES] key.
5) On the «Data Display Menu» display screen, select the {Data & LED Display} and press the [YES] key.
6) Using the scroll key, scroll the display screen up or down until the desired data is shown.
 A list of the support data is shown in the following table.
NOTE:
For detailed operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MANUAL”.
Description Display Message LED “ON” requirements
Ignition switch signal Ignition SW ON or OFF When ignition switch is ON
Test mode connector signal Test mode signal ON or OFF When test mode connector is connected.
Neutral position switch signal Neutral SW ON or OFF When neutral position signal is entered.
Air conditioning switch signal A/C SW ON or OFF When air conditioning switch is ON
Air conditioning relay signal A/C Compressor Relay ON or OFF When air conditioning relay is in function.
Radiator main fan relay signal Radiator fan relay 1 ON or OFF When radiator main fan relay is in function.
Fuel pump relay signal Fuel pump relay ON or OFF When fuel pump relay is in function.
Knocking signal Knock signal ON or OFF When knocking signal is input.
Radiator sub fan relay signal Radiator fan relay 2 ON or OFF When radiator sub fan relay is in function.
Engine torque control signal #1 AT coordinate request signal 1 ON or OFFWhen engine torque control signal 1 is
entered
Engine torque control signal #2 AT coordinate request signal 2 ON or OFFWhen engine torque control signal 2 is
entered
Engine torque control permission
signalAT coordinate permission sig-
nalON or OFFWhen engine torque control permission sig-
nal is entered.
Front oxygen (A/F) sensor rich sig-
nalFront O2 Rich Signal #1 ON or OFFWhen front oxygen (A/F) sensor mixture ratio
is rich.
Rear oxygen sensor rich signal RrO2 monitor ON or OFFWhen rear oxygen sensor mixture ratio is
rich.
Starter switch signal Starter SW ON or OFF When starter switch signal is entered.
Idle switch signal Idle Switch Signal ON or OFF When idle switch signal is entered.
Crankshaft position sensor signal Crankshaft position signal ON or OFFWhen crankshaft position sensor signal is
input.
Camshaft position sensor signal Camshaft position signal ON or OFFWhen camshaft position sensor signal is
entered.

EN(H4SO)-37
ENGINE (DIAGNOSTIC)
Inspection Mode
12.Inspection Mode
A: OPERATION
Perform the diagnosis on the “Diagnosis Trouble Codes (DTC) List” below.
Refer to the item of drive cycle when perform the diagnosis not on the “Diagnosis Trouble Codes (DTC) List”
below.
DTC Item
P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)
P0031 HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P0068 Manifold Pressure Sensor Range/Performance
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0122 Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input
P0123 Throttle/Pedal Position Sensor/Switch “A” Circuit High Input
P0129 Barometric Pressure Too Low
P0131 O
2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0132 O
2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0134 O
2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0137 O
2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
P0138 O
2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0335 Crankshaft Position Sensor “A” Circuit
P0336 Crankshaft Position Sensor “A” Circuit Range/Performance
P0340 Camshaft Position Sensor “A” Circuit (Bank 1 or Single Sensor)
P0341 Camshaft Position Sensor “A” Circuit Range/Performance (Bank 1 or Single Sensor)
P0458 Evaporative Emission Control System Purge Control Valve Circuit Low
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0502 Vehicle Speed Sensor Circuit Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High
P0512 Starter Request Circuit
P0513 Incorrect Immobilizer Key
P0519 Idle Control System Malfunction (Fail-Safe)
P0565 Cruise Control On Signal
P0604 Internal Control Module Random Access Memory (RAM) Error
P0703 Torque Converter/Brake Switch “B” Circuit
P0705 Transmission Range Sensor Circuit (PRNDL Input)
P0710 Transmission Fluid Temperature Sensor Circuit
P0716 Torque converter turbine speed sensor
P0720 AT Vehicle Speed Sensor Circuit Malfunction
P0726 Engine Speed Input Circuit Malfunction
P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio

EN(H4SO)-38
ENGINE (DIAGNOSTIC)
Inspection Mode
P0734 Gear 4 Incorrect Ratio
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0743 Torque Converter Clutch Circuit Electrical
P0748 Pressure Control Solenoid “A” Electrical
P0753 Shift Solenoid “A” Electrical
P0758 Shift Solenoid “B” Electrical
P0771 Low clutch timing solenoid
P0778 Pressure Control Solenoid “B” Electrical
P0785 Shift/Timing Solenoid
P0851 Neutral Switch Input Circuit Low
P0852 Neutral Switch Input Circuit High
P0864 TCM Communication Circuit Range/Performance
P0865 TCM Communication Circuit Low
P0866 TCM Communication Circuit Low
P1110 Atmospheric Pressure Sensor Circuit Malfunction (Low Input)
P1111 Atmospheric Pressure Sensor Circuit Malfunction (High Input)
P1492 EGR Valve Signal #1 Circuit Malfunction (Low Input)
P1493 EGR Valve Signal #1 Circuit Malfunction (High Input)
P1494 EGR Valve Signal #2 Circuit Malfunction (Low Input)
P1495 EGR Valve Signal #2 Circuit Malfunction (High Input)
P1496 EGR Valve Signal #3 Circuit Malfunction (Low Input)
P1497 EGR Valve Signal #3 Circuit Malfunction (High Input)
P1498 EGR Valve Signal #4 Circuit Malfunction (Low Input)
P1499 EGR Valve Signal #4 Circuit Malfunction (High Input)
P1510 ISC Solenoid Valve Signal #1 Circuit Malfunction (Low Input)
P1511 ISC Solenoid Valve Signal #1 Circuit Malfunction (High Input)
P1512 ISC Solenoid Valve Signal #2 Circuit Malfunction (Low Input)
P1513 ISC Solenoid Valve Signal #2 Circuit Malfunction (High Input)
P1514 ISC Solenoid Valve Signal #3 Circuit Malfunction (Low Input)
P1515 ISC Solenoid Valve Signal #3 Circuit Malfunction (High Input)
P1516 ISC Solenoid Valve Signal #4 Circuit Malfunction (Low Input)
P1517 ISC Solenoid Valve Signal #4 Circuit Malfunction (High Input)
P1518 Starter Switch Circuit Low Input
P1560 Back-Up Voltage Circuit Malfunction
P1570 Antenna
P1571 Reference Code Incompatibility
P1572 EGI — Immobilizer Communication
P1574 Key — Communication Failure
P1576 EGI Control Module EEPROM
P1577 IMM Control Module EEPROM
P1698 Engine Torque Control Cut Signal Circuit Malfunction (Low Input)
P1699 Engine Torque Control Cut Signal Circuit Malfunction (High Input)
P1700 Throttle Position Sensor Circuit Malfunction For AT
P1711 Engine Torque Control Signal #1 Circuit Malfunction
P1712 Engine Torque Control Signal #2 Circuit MalfunctionDTC Item

EN(H4SO)-57
ENGINE (DIAGNOSTIC)
Diagnostics for Engine Starting Failure
17.Diagnostics for Engine Starting Failure
A: PROCEDURE
1. Check for fuel amount.
↓
2. Inspection of starter motor circuit. ure.>
↓
3. Inspection of ECM power supply and ground line. ENGINE CONTROL MODULE (ECM), Diagnostics for Engine Starting Failure.>
↓
4. Inspection of ignition control system. Failure.>
↓
5. Inspection of fuel pump circuit.
↓
6. Inspection of fuel injector circuit.

EN(H4SO)-58
ENGINE (DIAGNOSTIC)
Diagnostics for Engine Starting Failure
B: STARTER MOTOR CIRCUIT
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode ERATION, Clear Memory Mode.> and Inspection Mode tion Mode.>.
WIRING DIAGRAM:
EN-00261
12INHIBITOR SWITCH
STARTER
MOTOR
7P
RND321
SBF-4SBF-1
B14
B72
12
11
T7T3B12
13
IGNITION
SWITCH
1*2*
1*
2*
T7
123456789101112
B72
34
12
20
B136ECM
: AT MODEL
: MT MODEL1*
2*
BATTERY
B12
123456789101112
B136
5
2
84
3923 20 211011
221617
24
2512136
261915
14
1
7
18

EN(H4SO)-59
ENGINE (DIAGNOSTIC)
Diagnostics for Engine Starting Failure
Step Check Yes No
1 CHECK BATTERY.
Check the battery voltage.Is the voltage more than 12 V? Go to step 2.Charge or replace
the battery.
2 CHECK INPUT SIGNAL FOR STARTER MO-
TOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from starter
motor.
3) Turn the ignition switch to START.
4) Measure the power supply voltage between
starter motor connector terminal and engine
ground.
Connector & terminal
(B14) No. 1 (+) — Engine ground (
−):
N
OTE:
 For AT model, shift the select lever to “P” or
“N” range.
 For MT model, depress the clutch pedal.Is the voltage more than 10 V? Go to step 3.Go to step 4.
3 CHECK GROUND CIRCUIT OF STARTER
MOTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the ground cable terminal from
starter motor.
3) Measure the resistance of ground cable
between ground cable terminal and engine
ground.Is the resistance less than 5
Ω?Check the starter
motor. SC(H4SO)-6,
Starter.>Repair open circuit
of ground cable.
4 CHECK HARNESS BETWEEN BATTERY
AND IGNITION SWITCH CONNECTOR.
1) Disconnect the connector from ignition
switch.
2) Measure the power supply voltage between
ignition switch connector and chassis ground.
Connector & terminal
(B72) No. 1 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 5.Repair open circuit
in harness
between ignition
switch and bat-
tery, and check
fuse SBF No. 4
and SBF No. 1.
5 CHECK IGNITION SWITCH.
1) Disconnect the connector from ignition
switch.
2) Measure the resistance between ignition
switch terminals while turning the ignition
switch to START position.
Te r m i n a l s
No. 1 — No. 3:Is the resistance less than 5
Ω?Go to step 6.Replace the igni-
tion switch.
6 CHECK TRANSMISSION TYPE.Is the transmission type AT? Go to step 7.Temporary poor
contact occurs.
Check poor con-
tact in each con-
nectors.
7 CHECK INHIBITOR SWITCH INPUT VOLT-
AGE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from inhibitor
switch.
3) Connect the connector to ignition switch.
4) Measure the input voltage between inhibitor
switch connector terminal and engine ground
while turning the ignition switch to START posi-
tion.
Connector & terminal
(B12) No. 12 (+) — Engine ground (
−):Is the voltage more than 10 V? Go to step 8.Repair open or
ground short cir-
cuit in harness
between inhibitor
switch and ignition
switch.
N
OTE:
Check security sys-
tem (if equipped).

EN(H4SO)-60
ENGINE (DIAGNOSTIC)
Diagnostics for Engine Starting Failure
8 CHECK INHIBITOR SWITCH.
1) Shift the select lever in the “P” or “N” range.
2) Measure the resistance between inhibitor
switch terminals.
Connector & terminal
(T3) No. 11 — No. 12:Is the resistance less than 1
Ω?Repair open or
ground short cir-
cuit in harness
between inhibitor
switch and starter
motor.Replace inhibitor
switch. 4AT-51, Inhibitor
Switch.> Step Check Yes No