Turn ignition off. Install BOB. Turn ignition on. Measure voltage between BOB test pins TP and SIGRTN while opening throttle. Compare voltage to specification in TP SENSOR OUTPUT VOLTAGE table. Go to next step if output voltage is not within specification.

TP SENSOR OUTPUT VOLTAGE

Throttle Opening

⁽¹⁾ Voltage

1/8

1.00

1/4

1.60

3/8

2.37

1/2

2.74

5/8

3.15

3/4

3.43

7/8

3.60

⁽¹⁾	Voltage may vary by 15 percent.

Turn ignition off. Unplug TP sensor connector at throttle body. Using jumper wires, connect VREF and SIGRTN wires on harness connector to corresponding terminals on TP sensor connector. Turn ignition on. Measure voltage between TP and SIGRTN terminals on TP sensor while opening throttle. Compare voltage to specification in TP SENSOR OUTPUT VOLTAGE table. If voltage is within specification, repair TP wire to ECA. Go to next step if voltage is not within specification.
Turn ignition off. Unplug TP harness connector. Turn ignition on. Measure voltage between VREF and SIGRTN wires on TP harness connect-or. If voltage is 4-5 volts, replace TP sensor. If voltage is not 4.5-5.5 volts, go to next step.
Measure voltage between VREF wire on TP harness connector and ground. If voltage is 4-5 volts, adjust or replace throttle position sensor. If voltage is not 4-5 volts, go to PINPOINT TEST VREF .

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Pinpoint Test TP - Throttle Position Sensor: 1.6L

Use the Manual With the Right Hardware

When to See a Mechanic

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