DTC P0171 FUEL INJECTION SYSTEM FUNCTION (LEAN SIDE) - Diagnostic Procedure (Cont'd)
EF & EC-7159flowchartDiagnostic Procedure (Cont'd)
DTC P0171 Diagnostic Procedure (Cont'd)
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8. 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 with fuel tube assembly. Refer to EC-7025.
Keep fuel hose and all injectors connected to injector gallery. The injector harness connectors should remain connected.
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9. CHECK INJECTOR
1. Disconnect all ignition coil harness connectors.
2. Place pans or saucers under each injector.
3. Crank engine for about 3 seconds. Make sure that fuel sprays out from injectors.
Fuel should be sprayed evenly for each cylinder.
NG
Replace injectors from which fuel does not spray out. Always replace O-ring with new one.
OK
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10. CHECK INTERMITTENT INCIDENT
Perform "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT", EC-7070.
INSPECTION END
See also
EC-7025 · EC-7070