Sensor Operating Specifications

NOTE: Perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure.

AIRFLOW METER RESISTANCE SPECIFICATIONS

Application & Terminals		Ohms
E2-Vs
Measuring Plate Fully Closed		200-600
Measuring Plate Fully Open		20-1200
E2-THA
-4°F (-20°C)		10,000-20,000
32°F (0°C)		4000-7000
68°F (20°C)		2000-3000
104°F (40°C)		900-1300
140°F (60°C)		400-700

NOTE: On MR2 Non-Turbo, air temperature sensor is mounted on intake air box. On Turbo models, air temperature sensor is an integral part of airflow meter. For air temperature sensor specifications, see Fig 1.

Fig 1: Air Temperature Sensor Specifications Chart (Non-Turbo)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

COLD START INJECTOR RESISTANCE SPECIFICATIONS

Application

⁽¹⁾ Ohms

All Engines

2.0-4.0

⁽¹⁾	Measure resistance between injector terminals.

COLD START INJECTOR TIME SWITCH RESISTANCE SPECIFICATIONS

Terminals	Temperature: °F (°C)	Ohms
Non-Turbo
STA-STJ	Less Than 86 (30)	20-40
"	Greater Than 104 (40)	40-60
STA-Ground	N/A	20-80
Turbo
STA-STJ	Less Than 50 (10)	30-50
"	Greater Than 77 (25)	70-90
STA-Ground	N/A	30-90

NOTE: For coolant temperature sensor specifications, see Fig 2.

Fig 2: Coolant Temperature Sensor Specifications

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

EGR GAS TEMP SENSOR SPECIFICATIONS

Temperature: °F (°C)

⁽¹⁾ Ohms

122 (50)

69-89

212 (100)

12-14

302 (150)

3-4

⁽¹⁾	Measure resistance between sensor terminals.

FUEL INJECTOR RESISTANCE SPECIFICATIONS

Application

⁽¹⁾ Ohms

Turbo

2.0-4.0

Non-Turbo

13.8

⁽¹⁾	Measured across terminals at 68°F (20°C).

ISC VALVE RESISTANCE SPECIFICATIONS

Application

Ohms

Turbo ⁽¹⁾

18-24

Non-Turbo ⁽²⁾

19-22

⁽¹⁾	Measure resistance between terminals +B to RSC or RSO.

⁽²⁾	Measure resistance between terminals +B to ISCC or ISCO.

OXYGEN SENSOR HEATER RESISTANCE SPECIFICATIONS

Application

Condition

Ohms

All Engines ⁽¹⁾

68°F (20°C)

5.1-6.3

⁽¹⁾	Measure resistance between terminals B+ and HT.

TPS RESISTANCE SPECIFICATIONS

Model/ Application	Clearance In. (mm)	Terminal Identification	Ohmmeter Reading
2.2L (A/T) & 2.0L Turbo	IDL & E2 . .020 (.51)	2300 Or Less	"
"	.028 (.71)	No Continuity	"
VTA & E2	0 (0)	200-800	"
"	Fully Open	3300-10,300	"
VC & E2	N/A	3000-8300	2.2L (M/T)
IDL & E1	.020 (.50)	Continuity	"
"	.035 (.90)	No Continuity	"
"	Fully Open	No Continuity	"
PSW & E1	.020 (.50)	No Continuity	"
"	.035 (.90)	No Continuity	"
"	Fully Open	Continuity	"

TURBO PRESSURE SENSOR SPECIFICATIONS

Applied Vacuum: In. Hg

⁽¹⁾ Voltage Drop

3.94

.15-.35

7.87

.40-.60

11.81

.65-.85

15.75

.90-1.10

19.69

1.15-1.35

⁽¹⁾	Voltage drop is from measured voltage of pressure sensor (harness connector terminals VC and E2). Measure voltage between ECU connector terminals PIM and E2. See I - SYS/COMP TESTS article in this section.

VACUUM SENSOR SPECIFICATIONS ⁽¹⁾

Vacuum: In. Hg

⁽²⁾ Voltage Drop

3.94

.3-.5

7.87

.7-.9

11.81

1.1-1.3

15.75

1.5-1.7

19.69

1.9-2.1

⁽¹⁾	Vacuum sensor is also known as MAP sensor.

⁽²⁾	Voltage drop is from measured voltage of pressure sensor (harness connector terminals VCC and E2). Measure voltage between ECU connector terminals PIM and E2. See I - SYS/COMP TESTS article in this section.