Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 2000-2003 Approved Subaru Legacy 2000 2000 Service Manual ENGINE SECTION On Board Diagnostics II System MSA5TCD00L16713
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DIAGNOSTICS [T9A0] 2-7
9. General Diagnostic Table
9. General Diagnostic Table
A: GENERAL DIAGNOSTICS TABLE WITH NON-CONFORMITY SYMPTOM
FOR ENGINE
NOTE:
Malfunction of parts other than those listed is also possible.
Symptom Problem parts
1) Idle air control solenoid valve
2) Intake manifold pressure sensor
3) Intake air temperature sensor
4) Intake air temperature and pressure sensor
1. Engine stalls during idling. 5) Ignition parts (*1)
6) Engine coolant temperature sensor (*2)
7) Crankshaft position sensor (*3)
8) Camshaft position sensor (*3)
9) Fuel injection parts (*4)
1) Idle air control solenoid valve
2) Intake manifold pressure sensor
3) Intake air temperature sensor
4) Intake air temperature and pressure sensor
5) Engine coolant temperature sensor (*2)
6) Ignition parts (*1)
2. Rough idling 7) Air intake system (*5)
8) Fuel injection parts (*4)
9) Throttle position sensor
10) Crankshaft position sensor (*3)
11) Camshaft position sensor (*3)
12) Oxygen sensor
13) Fuel pump and fuel pump relay
1) Idle air control solenoid valve
2) Engine coolant temperature sensor
3) Accelerator cable (*6)
3. Engine does not return to idle. 4) Throttle position sensor
5) Intake manifold pressure sensor
6) Intake air temperature sensor
7) Intake air temperature and pressure sensor
1) Intake manifold pressure sensor
2) Intake air temperature sensor
3) Intake air temperature and pressure sensor
4) Throttle position sensor
5) Fuel injection parts (*4)
6) Fuel pump and fuel pump relay
4. Poor acceleration
7) Engine coolant temperature sensor (*2)
8) Crankshaft position sensor (*3)
9) Camshaft position sensor (*3)
10) A/C switch and A/C cut relay
11) Engine torque control signal circuit
12) Ignition parts (*1)
1) Intake manifold pressure sensor
2) Intake air temperature sensor
3) Intake air temperature and pressure sensor
4) Engine coolant temperature sensor (*2)
5. Engine stalls or engine sags or hesitates at 5) Crankshaft position sensor (*3)
acceleration. 6) Camshaft position sensor (*3)
7) Purge control solenoid valve
8) Fuel injection parts (*4)
9) Throttle position sensor
10) Fuel pump and fuel pump relay
107
2-7 [T9B0] DIAGNOSTICS
9. General Diagnostic Table
Symptom Problem parts
1) Intake manifold pressure sensor
2) Intake air temperature sensor
3) Intake air temperature and pressure sensor
4) Engine coolant temperature sensor (*2)
6. Surge 5) Crankshaft position sensor (*3)
6) Camshaft position sensor (*3)
7) Fuel injection parts (*4)
8) Throttle position sensor
9) Fuel pump and fuel pump relay
1) Intake manifold pressure sensor
2) Intake air temperature sensor
3) Intake air temperature and pressure sensor
7. Spark knock 4) Engine coolant temperature sensor
5) Knock sensor
6) Fuel injection parts (*4)
7) Fuel pump and fuel pump relay
1) Intake manifold pressure sensor
2) Intake air temperature sensor
3) Intake air temperature and pressure sensor
8. After burning in exhaust system
4) Engine coolant temperature sensor (*2)
5) Fuel injection parts (*4)
6) Fuel pump and fuel pump relay
*1: Check ignition coil & ignitor assembly and spark plug.
*2: Indicate the symptom occurring only in cold temperatures.
*3: Ensure the secure installation.
*4: Check fuel injector, fuel pressure regulator and fuel filter.
*5: Inspect air leak in air intake system.
*6: Adjust accelerator cable.
B: GENERAL DIAGNOSTICS TABLE WITH NON-CONFORMITY SYMPTOM
FOR AUTOMATIC TRANSMISSION
NOTE:
Check general diagnostics table with non-conformity symptom for automatic transmission.
108
DIAGNOSTICS [T9B0] 2-7
9. General Diagnostic Table
MEMO:
109
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