Subaru Legacy 2002 Service Manual page 923

Engine (Diagnostics)
15. General Diagnostic Table
A: INSPECTION
NOTE:
¼ Malfunction of parts other than those listed is also possible.
¼ The right-hand priority column indicates the inspection priority of probable causes of the symptom. Carry
out the check starting from A.
Symptom
1. Engine does not start. (internal combustion does
not occur.)
2. Engine does not start. (internal combustion
occurs.)
3. Engine does not start. (engine stalls after internal
combustion.)
4. Engine stalls.
GENERAL DIAGNOSTIC TABLE
S038257A10
1) ECM power supply
2) Engine ground terminal
3) Crankshaft position sensor
4) Camshaft position sensor
5) Fuel pump
6) Pressure regulator
7) Ignition coil & ignitor
8) Spark plug
9) Fuel injector
1) ECM power supply
2) Spark plug
3) Engine coolant temperature sensor
4) Pressure regulator
5) Pressure sensor
6) Fuel pump
7) Fuel injector
8) Camshaft position sensor
9) Crankshaft position sensor
10) Idle air control solenoid valve
1) ECM power supply
2) Pressure sensor
3) Engine coolant temperature sensor
4) Spark plug
5) Ignition coil
6) Fuel pump
7) Pressure regulator
8) Fuel injector
9) Idle air control solenoid valve
1) Idle air control solenoid valve
2) Pressure sensor
3) Spark plug
4) Accelerator cable is out of adjustment
5) ECM power supply
6) Throttle position sensor
7) Crankshaft position sensor
8) Vehicle speed sensor
9) Ignition coil
10) Fuel pump
EN(w/oOBD)-112
S038257
Problem parts Priority
A
A
B
B
B
B
C
C
C
A
A
B
B
C
C
C
C
C
C
A
A
B
B
C
C
C
C
C
A
B
B
B
C
C
C
C
C
C