|
|
P0133, P0153 A/F SENSOR 1 EC-157 < COMPONENT DIAGNOSIS > [VQ40DE] C D E F G H I J K L M A EC N P O 3. Disconnect mass air flow sensor harness connector. 4. Restart engine and let it idle for at least 3 seconds. 5. Stop engine and reconnect mass air flow sensor harness con- 6. Make sure DTC P0102 is displayed. 7. Erase the DTC memory. Refer to 8. Make sure DTC P0000 is displayed. 9. Run engine for at least 10 minutes at idle speed. Yes or No Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to No >> GO TO 6. 6. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect A/F sensor 1 harness connector. 3. Turn ignition switch ON. 4. Check voltage between A/F sensor 1 terminal 4 and ground with OK or NG OK >> GO TO 8. NG >> GO TO 7. 7. DETECT MALFUNCTIONING PART Check the following. >> Repair or replace harness or connectors. 8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. BBIA0541E Voltage: Battery voltage BBIA0544E PBIB3308E A/F sensor 1 terminal ECM terminal |