Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0101) 
   1. Connect the intelligent tester to the DLC3 with the CAN VIM.
   2. Turn the ignition switch ON and tester ON.
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   4. Read the DTCs.

      Result 

      RESULT REFERENCE
      
      

      Display (DTC Output)	Proceed to
      P0101 and other codes are output	A
      Only P0101 is output	B

      HINT:

      If any other codes besides P0101 are output, perform troubleshooting for those DTCs first.

   B: GO TO RELEVANT DTC TABLE 

   A: Go to next step 

2. CHECK AIR INDUCTION SYSTEM 
   1. Check the air induction system for vacuum leakage.

      OK: 

      No leakage from air induction system. 

   NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM 

   OK: Go to next step 

3. CHECK VENTILATION HOSE CONNECTIONS 

   OK: 

   Ventilation hose is connected correctly and is not damaged. 

   NG: REPAIR OR REPLACE VENTILATION HOSE 

   OK: REPLACE MASS AIR FLOW METER