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OK TESTER DISPLAY DESCRIPTION NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs
. HINT: If a permanent DTC is output, the system is malfunctioning. 12. WIRING DIAGRAM Refer to DTC P0412
. INSPECTION PROCEDURE NOTICE: Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle PROCEDURE 1. INSPECT AIR PUMP HEATER RELAY (AI HTR) (a) Inspect the air pump heater relay (AI HTR)
. NG REPLACE AIR PUMP HEATER RELAY (AI HTR) 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P144C,P144... |