Throttle Position Sensor

Disconnect negative battery cable and Throttle Position (TP) sensor connector. See Fig 1 or Fig 2 . Using an ohmmeter, check resistance between indicated terminals. See THROTTLE POSITION (TP) SENSOR RESISTANCE table.

Fig 1: Identifying Throttle Position (TP) Sensor Terminals (Esteem, Swift & Vitara 1.6L & 2.0L)

Courtesy of SUZUKI OF AMERICA CORP.

Fig 2: Identifying Throttle Position (TP) Sensor Terminals (Grand Vitara 2.5L & XL-7)

Courtesy of GENERAL MOTORS CORP.

THROTTLE POSITION (TP) SENSOR RESISTANCE

Application			Ohms
Esteem & Swift
Between Terminals No. 1 & 2			2500-6000
Between Terminals No. 1 & 3
At Idle			100
At Wide Open Throttle			20,000
Grand Vitara, Vitara & XL-7
Between Terminals No. 1 & 3			4000-6000
Between Terminals No. 1 & 2 (Vitara & XL-7)
At Idle			20
At Wide Open Throttle			6000
Between Terminals No. 2 & 3 (Grand Vitara)
At Idle			0
At Wide Open Throttle			4600

THROTTLE POSITION (TP) SENSOR VOLTAGE

Application

⁽¹⁾ Volts

Esteem (1.6L) ⁽²⁾

At Idle

.20-1.0

At Wide Open Throttle

2.8-4.8

Esteem (1.8L) & Grand Vitara ⁽²⁾

At Idle

.35-.65

At Wide Open Throttle

3.5-4.5

Vitara (1.6L & 2.0L) ⁽²⁾

At Idle

.50-1.2

At Wide Open Throttle

3.4-4.7

XL-7 ⁽²⁾

At Idle

.51-.91

At Wide Open Throttle

3.7-4.4

⁽¹⁾	Ignition on and engine off.

⁽²⁾	Measure voltage at ECM connector terminal No. C20-6 (Esteem 1.6L), C20-25 (Esteem 1.8L), C51-3-9, (Vitara 1.6L & 2.0L), C51-3-12 (Grand Vitara), C51-3-9 (XL-7) and C22-6 (Swift). See PIN VOLTAGE/CIRCUIT RESISTANCE CHARTS article.

On Grand Vitara 2.5L, if resistance is not as specified, adjust TP sensor. See THROTTLE POSITION (TP) SENSOR in ON-VEHICLE ADJUSTMENTS article. If resistance is not as specified after adjustment, replace TP sensor. For further diagnostic procedures, see appropriate SELF-DIAGNOSTICS article. On Esteem 1.8L and Grand Vitara, see THROTTLE POSITION (TP) SENSOR VOLTAGE table.