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A OK (e) Read DTCs. Result RESULT PROCEED TO P0171, P0172, P0174 or P0175 is output A P0171, P0172, P0174 or P0175 and other DTCs are output B HINT: If any DTCs other than P0171, P0172, P0174 or P0175 are output, troubleshoot those DTCs first. B GO TO DTC CHART 2. CHECK PCV HOSE CONNECTIONS (a) Check the PCV hose connections
. OK: PCV hose is connected correctly and is not damaged. NG REPAIR OR REPLACE PCV HOSE 3. CHECK INTAKE SYSTEM HINT: If a malfunction occurs when depressing the brake pedal, inspect the brake booster assembly, as there may be a vacuum leak in the brake booster assembly itself. (a) Check the intake system for vacuum leaks
. OK: No leaks in intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system
. NG REPAIR OR REPLACE INTAKE SYSTEM 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0171,P0172,... |