Hand-held tester:

WARNING: This page is about a different variant/trim than selected.

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

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

On the hand-held tester, enter the following menus: DIAGNOSIS/ENHANCED OBD II/DATA LIST/ETCS/ACCEL POS #1 and ACCEL POS #2" and read its value displayed on the hand-held tester.

Standard:

ACCELERATOR PEDAL POSITION AND VOLTAGE SPECIFICATIONS

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: REPLACE ECM (See REPLACEMENT )
NG: GO TO NEXT STEP.

CHECK WIRE HARNESS (ACCELERATOR PEDAL POSITION SENSOR - ECM)
1. Disconnect the A27 sensor connector.
2. Disconnect the E5 ECM connector.
3. Measure the resistance of the wire harness side connectors.
  
  Fig 1: Identifying Wire Harness Accelerator Pedal Position Sensor & ECM Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Harness Resistance Values
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
2. OK: REPLACE ACCELERATOR PEDAL ROD ASSY (See REPLACEMENT )