Inspection Procedure

HINT:

Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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. READ VALUE USING INTELLIGENT TESTER (ACCEL POS #1 AND ACCEL POS #2) 
   1. Connect an intelligent tester to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ETCS / ACCEL POS #1 and ACCEL POS #2.
   4. Read the values displayed on the tester.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS
      
      

      Accelerator Pedal Operations	ACCEL POS #1	ACCEL POS #2
      Released	0.5 to 1.1 V	1.2 to 2.0 V
      Depressed	2.6 to 4.5 V	3.4 to 5.0 V

      Fig 1: Identifying Accelerator Pedal Depressed & Released Position

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK:  Go to step  3

   NG: Go TO NEXT STEP 

2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR ECM)  (See INSPECTION PROCEDURE  )

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go TO NEXT STEP 

3. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY 

   Replace the accelerator pedal rod assembly (See ON-VEHICLE INSPECTION  ).

4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2121) 
   1. Connect an intelligent tester to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Clear DTCs (See DTC CHECK/CLEAR  ).
   4. Start the engine.
   5. Allow the engine to idle for 15 seconds.
   6. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   7. Read DTCs.

      Result 

      DTC RESULT DESCRIPTION
      
      

      Display (DTC Output)	Proceed To
      P2121	A
      No output	B

   B: SYSTEM OK 

   A: REPLACE ECM  (See REMOVAL  )