Throttle Position Sensor (TPS)

NOTE: For information on connector terminal identification and test conditions specified in the following tables, see appropriate ADJUSTMENTS article in the ENGINE PERFORMANCE section.

TPS VOLTAGE

Red Wire Voltage	Blue Wire Voltage Closed Throttle	Blue Wire Voltage Wide Open Throttle
4.50-4.59	.37-.54	3.58-4.23
4.60-4.69	.38-.55	3.66-4.32
4.70-4.79	.39-.56	3.74-4.41
4.80-4.89	.40-.57	3.82-4.51
4.90-4.99	.40-.58	3.90-4.60
5.00-5.09	.41-.60	3.97-4.70
5.10-5.19	.42-.61	4.05-4.79
5.20-5.29	.43-.62	4.13-4.88
5.30-5.39	.44-.63	4.21-4.98
5.40-5.49	.44-.64	4.29-5.07
5.50	.44-.66	4.29-5.17

TPS CONTINUITY TEST

Test Condition ⁽¹⁾

⁽²⁾ Continuity

.004" (.1 mm)

Yes

.024" (.6 mm)

⁽¹⁾	Insert feeler gauge of specified thickness between throttle lever and throttle stop screw.

⁽²⁾	Check continuity with ohmmeter connected between TPS terminals "E" and IDL.

TPS CONTINUITY TEST

Test Condition

Continuity Between IDL & TL

Continuity Between POW & TL

Miata

.016" (.4 mm) ⁽¹⁾

Yes

.027" (.7 mm)⁽¹⁾

Wide Open Throttle

Yes

Protege & 323

.004" (.10 mm) ⁽¹⁾

Yes

.039" (1.0 mm) ⁽¹⁾

Wide Open Throttle

Yes

⁽¹⁾	Insert feeler gauge of specified thickness between throttle lever and throttle stop screw.

TPS RESISTANCE

Test Condition			Ohms
MPV 3.0L & 929 SOHC
Between Terminals "A" & "D"			3500-6500
Between Terminals "B" & "D"
Closed Throttle			About 1000 or less
Wide Open Throttle			3500-6500
929 DOHC
Between Terminals "A" & "D"			3000-6000
Between Terminals "B" & "D"
Closed Throttle			200-600
Wide Open Throttle			3300-7000

TPS ADJUSTMENT

Test Condition ⁽¹⁾

Continuity Between C & D

MPV 3.0L & 929 SOHC

.020" (.5 mm)

Yes

.028" (.7 mm)

929 DOHC

.004" (.1 mm)

Yes

.012" (.3 mm)

⁽¹⁾	Insert feeler gauge of specified thickness between throttle lever and throttle stop screw.

TPS VOLTAGE - RX7

Terminal	Volts With Throttle Closed	Volts With Throttle Fully Open
2F (Narrow Range)	.75-1.25	About 5
2G (Full Range)	.25-1.25	4.1-4.4