Hand-held tester:: Notes

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

READ VALUE USING HAND-HELD TESTER (THROTTLE VALVE OPENING PERCENTAGE)

Connect a hand-held tester to the DLC3.
Turn the ignition switch to ON and turn the tester ON
Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST/ ETCS /THROTTLE POS.

Read the value displayed on the tester when the accelerator pedal is released and depressed.

Result:

THROTTLE VALVE OPENING ANGLE

Throttle Valve Opening Angle (%)	Proceed To
0 (constant)	A
From approximately 0 to 75	B
Approximately 100 (constant)	C

Fig 1: Depressing/Releasing Accelerator Pedal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

B: CHECK FOR INTERMITTENT PROBLEMS
C: Go to step 4
A: GO TO NEXT STEP

INSPECT THROTTLE POSITION SENSOR

Disconnect the T1 Throttle Position (TP) sensor connector.

Measure the resistance between the terminals of the TP sensor.

Standard:

THROTTLE POSITION SENSOR RESISTANCE

Tester Connections	Throttle Valve Positions	Specified Conditions
VC (T1-2)-E2 (T1-1)		Between 2.5 kΩ and 5.9 kΩ
VTA (T1-3)-E2 (T1-1)	Fully closed	Between 0.2 kΩ and 5.7 kΩ
VTA (T1-3)-E2 (T1-1)	Fully open	Between 2.0 kΩ and 10.2 kΩ

Reconnect the TP sensor connector.

Fig 2: Identifying Terminals Of T1 Throttle Position Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE THROTTLE POSITION SENSOR
OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (ECM - THROTTLE POSITION SENSOR)

Disconnect the E3 ECM connector.

Measure the resistance between the terminals of the ECM connector.

Standard:

ECM - THROTTLE POSITION SENSOR RESISTANCE

Tester Connections	Throttle Valve Positions	Specified Conditions
VC (E3-18)-E2 (E3-28)		Between 2.5 kΩ and 5.9 kΩ
VTA (E3-21)-E2 (E3-28)	Fully closed	Between 0.2 kΩ and 5.7 kΩ
VTA (E3-21)-E2 (E3-28)	Fully open	Between 2.0 kΩ and 10.2 kΩ

Fig 3: Disconnecting E3 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the resistance.

Standard (Check for short):

ECM - THROTTLE POSITION SENSOR RESISTANCE (CHECK FOR SHORT)

Tester Connections	Specified Conditions
VC (E3-18)-Body ground	10 kΩ or higher
VTA (E3-28)-Body ground	10 kΩ or higher

Reconnect the ECM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: GO TO NEXT STEP
REPLACE ECM (See ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT )

INSPECT THROTTLE POSITION SENSOR

Disconnect the T1 TP sensor connector.

Measure the resistance between the terminals of the TP sensor.

Standard:

THROTTLE POSITION SENSOR RESISTANCE

Tester Connections	Throttle Valve Positions	Specified Conditions
VC (T1-2)-E2 (T1-1)		Between 2.5 kΩ and 5.9 kΩ
VTA (T1-3)-E2 (T1-1)	Fully closed	Between 0.2 kΩ and 5.7 kΩ
VTA (T1-3)-E2 (T1-1)	Fully open	Between 2.0 kΩ and 10.2 kΩ

Reconnect the TP sensor connector.

Fig 4: Identifying Terminals Of T1 TP Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE THROTTLE POSITION SENSOR
OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (ECM - THROTTLE POSITION SENSOR)

Disconnect the E3 ECM connector.
Disconnect the T1 TP sensor connector.

Check the resistance.

Standard (Check for open):

ECM - THROTTLE POSITION SENSOR RESISTANCE (CHECK FOR OPEN)

Tester Connections	Specified conditions
VC (T1-2)-VC (E3-18)	Below 1Ω
VTA (T1-3)-VTA (E3-21)	Below 1Ω
E2 (T1-1)-E2 (E3-28)	Below 1Ω

Fig 5: Disconnecting E3 ECM Connector

Standard (Check for short):

ECM - THROTTLE POSITION SENSOR RESISTANCE (CHECK FOR SHORT)

Tester Connections	Specified Conditions
VC (T1-2) or VC (E3-18)-Body ground	10 kΩ or higher
VTA (T1-3) or VTA (E3-21)-Body ground	10 kΩ or higher

Reconnect the TP sensor connector.
Reconnect the ECM connector.

Fig 6: Identifying Terminals Of T1 TP Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: GO TO NEXT STEP
REPLACE ECM (See ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT )