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 Swift GLXFACTORY OEM SERVICE PROCEDURE

Throttle Position Sensor (TPS)

THROTTLE POSITION SENSOR (TPS) RESISTANCE - DOHC

Application		Ohms
Between Terminals "C" & "D"
With .012" (.30 mm) Clearance At Stop Screw		0-2000
With .035" (.89 mm) Clearance At Stop Screw		Infinity
Between Terminals "C" & "A"		3500-6500
Between Terminals "C" & "B"
At Idle		0-500
At Wide Open Throttle		3500-6500

THROTTLE POSITION SENSOR (TPS) RESISTANCE - SOHC A/T

Application ⁽¹⁾

Ohms

Between Terminals "A" & "B"

With .012" (.30 mm) Clearance At Stop Screw

Less Than 5000

With .035" (.89 mm) Clearance At Stop Screw

Infinity

Between Terminals "A" & "D"

4370-8130

Between Terminals "A" & "C"

At Idle

240-1140

At Wide Open Throttle

3170-6600

⁽¹⁾	Throttle position sensor is used only on SOHC with automatic transaxle, SOHC with manual transaxle uses throttle switch.

Fig 1: Throttle Position Sensor (TPS) Terminals (DOHC)

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.