DTC P0172 FUEL INJECTION SYSTEM FUNCTION (RICH SIDE) - Diagnostic Procedure (Cont'd)
EF & EC-7165flowchartDiagnostic Procedure (Cont'd)
DTC P0172 Diagnostic Procedure (Cont'd)
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7. REMOVE INJECTOR
1. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
2. Turn ignition switch "OFF".
3. Remove injector assembly. Refer to EC-7025.
Keep fuel hose and all injectors connected to injector gallery.
2
8. CHECK INJECTOR
1. Disconnect all injector harness connectors.
2. Disconnect all ignition coil harness connectors.
3. Prepare pans or saucers under each injectors.
4. Crank engine for about 3 seconds.
Make sure fuel does not drip from injector.
NG (Drips)
Replace the injectors from which fuel is dripping. Always replace O-ring with new one.
OK (Does not drip)
3
9. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE STUCK OPEN
Perform "Component Inspection" of EVAP canister purge volume control solenoid valve, refer to EC-7195
NG
Replace EVAP canister purge volume control sonenoid value.
OK
4
10. CHECK INTERMITTENT INCIDENT
Perform "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT", EC-7070.
INSPECTION END
See also
EC-7025 · EC-7195 · EC-7070