Perform A/F Control

HINT:

Hand-held tester only:

Narrowing down the trouble area is possible by performing the "A/F CONTROL" ACTIVE TEST (A/F sensor, heated oxygen sensor 2 or other trouble areas can be distinguished).

1. Perform ACTIVE TEST using the hand held tester (A/F CONTROL).

   HINT:

   "A/F CONTROL" is an ACTIVE TEST which changes the injection volume -12.5 % or +25 %.

   1. Connect the hand held tester to the DLC3 on the vehicle.
   2. Turn the ignition switch ON.
   3. Warm up the engine by running the engine at 2,500 RPM for approximately 90 seconds.
   4. Enter the following menus: DIAGNOSIS/ENHANCED OBD II/ACTIVE TEST/A/F CONTROL.
   5. Perform "A/F CONTROL" with the engine in an idle condition (press the right or left button).

      Result: 

      A/F sensor reacts in accordance with increase and decrease of injection volume: 

      +25 % --> rich output: Less than 3.0 V 

      -12.5 % --> lean output: More than 3.35 V 

      Heated oxygen sensor 2 reacts in accordance with increase and decrease of injection volume: 

      +25 % --> rich output: More than 0.55 V 

      -12.5 % --> lean output: Less than 0.4 V