Inspection Procedure: Notes

NOTE: Read freeze frame data using the hand held tester or the OBD II scan tool, as freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.

Hand-held tester:

READ VALUE OF HAND HELD TESTER (ACCEL POS #1 AND ACCEL POS #2)

Connect the hand held tester to the DLC3.
Turn the ignition switch ON.

Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST/ETCS/ACCEL POS #1 and ACCEL POS #2" and read its value displayed on the hand held tester.

Fig 1: Identifying Accelerator Pedal Operation

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

ACCELERATOR PEDAL OPERATION VOLTAGE

Accelerator pedal	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 5.3 V

OK: CHECK AND REPLACE ECM (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
NG: Go to next step.

CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM)
1. Disconnect the A15 accelerator pedal position sensor connector.
2. Disconnect the E4 ECM connector.
3. Check for continuity between the wire harness side connectors.
  Standard (Check for open):
  
  Fig 4: Symbols Specified Condition Table (Check For Open)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard (Check for short):
  
  Fig 5: Symbols Specified Condition Table (Check For Short)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Reconnect the accelerator pedal position sensor connector.
5. Reconnect the ECM connector.
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: REPLACE ACCELERATOR PEDAL ROD ASSY (See REPLACEMENT ).