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Diagnostic Procedure
NGEC0693
1 CHECK EXHAUST AIR LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust air leak before three way catalyst.
SEF099P
OK or NG
OK 䊳 GO TO 2.
NG 䊳 Repair or replace.
2 CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK 䊳 GO TO 3.
NG 䊳 Repair or replace.
DTC P0171 (RIGHT, -B1), P0174 (LEFT, -B2) FUEL INJECTION
SYSTEM FUNCTION (LEAN)
VG33E
Diagnostic Procedure
EC-888
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