Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

1990 Suzuki SamuraiFACTORY OEM SERVICE PROCEDURE

Throttle Position Sensor (TPS)

THROTTLE POSITION SENSOR (TPS) RESISTANCE

Application

Ohms

Between Terminals "C" & "D"

With .008" (.20 mm) Clearance At Stop Screw

0-550

With .016" (.41 mm) Clearance At Stop Screw

Infinity

Between Terminals "A" & "D"

3,500-6,500

Between Terminals "B" & "D"

At Idle ⁽¹⁾

0-2,000

At Wide Open Throttle ⁽²⁾

2,000-6,500

⁽¹⁾	To obtain idle position, apply a vacuum reading of 19 in. Hg to throttle opener.

⁽²⁾	There should be more than 2000 ohms difference between idle and wide open throttle readings.

Fig 1: Identifying Throttle Position Sensor (TPS) Terminals

Courtesy of SUZUKI OF AMERICA CORP.

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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.

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