Read Data List Throttle Pos Throttle

Connect the intelligent tester to the DLC3.

Turn the ignition switch to ON and turn the intelligent tester ON.

Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ETCS / THROTTLE POS #1 and THROTTLE POS #2. Check the values displayed on the tester.

Result

Result

Throttle position expressed as percentage and voltage

Trouble Area

Proceed to

Accelerator pedal released

Accelerator pedal depressed

THROTTLE POS #1 (VTA1)

THROTTLE POS #2 (VTA2)

THROTTLE POS #1 (VTA1)

THROTTLE POS #2 (VTA2)

0%

0 to 0.2 V

0%

0 to 0.2 V

VC circuit open

A

100%

4.5 to 5.0 V

100%

4.5 to 5.0 V

E2 circuit open

A

0% or 100%

2.1 to 3.1 V (fail-safe)

0% or 100%

2.1 to 3.1 V (fail-safe)

VTA1 circuit open or ground short

A

about 19% (fail-safe)

0 to 0.2 or 4.5 to 5.0 V

about 19% (fail-safe)

0 to 0.2 or 4.5 to 5.0 V

VTA2 circuit open or ground short

A

10 to 22%

2.1 to 3.1 V

66 to 98% (does not fail-safe)

4.5 to 5.0 V (does not fail-safe)

TP sensor circuit is normal

• TP#1 denotes THROTTLE POS, and TP#2 denotes THROTTLE POS#2.

• AP denotes Accelerator Pedal.

• VTA1 is expressed as percentages, and VTA2 is expressed as voltages.

Tester Connection

Specified Condition

T1-5 (VC) - E4-18 (VC)

Below 1 Q

T1-6 (VTA) - E4-20 (VTA1)

Below 1 Q

T1-4 (VTA2) - E4-19 (VTA2)

Below 1 Q

T1-3 (E2) - E4-28 (VTA2)

Below 1 Q

Standard Resistance (Check for short)

Tester Connection

Specified Condition

T1-5 (VC) or E4-18 (VC) - Body ground

10 kQ or higher

T1-6 (VTA1) or E4-20 (VTA1) - Body ground

10 kQ or higher

T1-4 (VTA2) or E4-19 (VTA2) - Body ground

10 kQ or higher

(d) Reconnect the throttle body connector.

(e) Reconnect the ECM connector.

Go to step 5

Connector

Front View

ECM Connector

VTA1

VTA2

Disconnect the T1 throttle body connector.

(b) Disconnect the E4 ECM connector.

(c) Check the resistance.

Standard Resistance (Check for open)

Tester Connection

Specified Condition

Below 1 Q

Below 1 Q

Below 1 Q

Below 1 Q

Standard Resistance (Check for short)

Tester Connection

Specified Condition

10 kQ or higher

10 kQ or higher

10 kQ or higher

(d) Reconnect the throttle body connector.

(e) Reconnect the ECM connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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