Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. Are there any other codes (besides DTC P2111 or P2112) being output? 

   PREPARATION: 

   1. Connect the hand-held tester or the OBD II scan tool to the DLC3.
   2. Turn the ignition switch ON and push the hand-held tester or the OBD II scan tool main switch ON.
   3. Enter the following menus: DIAGNOSIS/ENHANCED OBD II/DTC INFO/CURRENT CODES.

   CHECK: 

   Read the DTC using the hand-held tester or the OBD II scan tool.

   RESULT: 

   RESULT
   
   

   Display (DTC Output)	Proceed to
   P2111 or P2112	A
   P2111 or P2112 and other DTCs	B

   HINT:

   If any other codes besides P2111 or P2112 are output, perform the troubleshooting for those DTCs first.

   B: Go to relevant DTC chart (See  DIAGNOSTIC TROUBLE CODE CHART  ). 

   A: Go to next step. 

2. Visually check throttle valve. 

   PREPARATION: 

   Remove the intake air resonator.

   CHECK: 

   Check whether or not a foreign body exists between the throttle valve and housing. Also, check if the valve can open and close smoothly.

   Fig 1: Checking Throttle Valve

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: Repair or replace throttle body (See  REPLACEMENT  ). 

   OK: Go to next step. 

3. Is DTC P2111 or P2112 output again? 

   NO: Check for intermittent problems (See  PRE-CHECK  ). 

   YES: Replace ECM (See  ENGINE CONTROL MODULE (ECM)  ).