Engine Controls - Sensor Operating Range Charts: Introduction

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.

Where necessary, see SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE Section for terminal identification.

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

COLD START INJECTOR TIME SWITCH SPECIFICATIONS

Switch Terminals		Ohms
Coolant Temperature Below 68°F (20°C)
1 & 2		33-41
1 & 3		33-41
2 & 3		0
Coolant Temperature Above 75°F (24°C)
1 & 2		67-79
1 & 3		67-79
2 & 3		40-155

AIR & COOLANT TEMPERATURE SENSOR SPECIFICATIONS

Temperature ⁽¹⁾

Ohms

176°F (80°C)

222-422

140°F (60°C)

384-784

104°F (40°C)

840-1440

68°F (20°C)

1950-2950

32°F (0°C)

4380-7380

-4°F (-20°C)

13,000-19,400

⁽¹⁾	Specifications are for intake air and cooling system fluid.

FUEL PUMP RELAY SPECIFICATIONS (1.0L & 1.6L)

Terminals

Specification

No. 1 & 2

⁽¹⁾ Continuity

No. 3 & 4

No Continuity

No. 1 & 3

No Continuity

No. 1 & 4

No Continuity

No. 2 & 3

No Continuity

No. 2 & 4

No Continuity

Function Test No. 3 & 4 ⁽²⁾

Continuity

⁽¹⁾	Resistance specification is 40-100 ohms.

⁽²⁾	Test with battery voltage applied to terminals No. 1 and 2.

FUEL PUMP RELAY SPECIFICATIONS (1.3L)

Terminals

Specification

No. 1 & 2

10-40 Ohms

No. 1 & 3

No Continuity

No. 1 & 4

No Continuity

No. 1 & 5

No Continuity

No. 2 & 5

No Continuity

No. 3 & 5

100-200 Ohms

No. 4 & 5

No Continuity

Function Test No. 4 & 5 ⁽¹⁾

Continuity

Voltage Test No. 4 ⁽²⁾

Battery Voltage

⁽¹⁾	Test with battery voltage applied to terminals No. 1 and 2.

⁽²⁾	Test with battery voltage applied to terminals No. 3 and 5.

INJECTOR & MAIN RELAY SPECIFICATIONS

Terminals

Specification

Step 1, Resistance Test Injector & Main Relay No. 1 & 2

40-100 Ohms

Step 2, Continuity Test Injector & Main Relay

No. 1 & 3

No Continuity

No. 1 & 4

No Continuity

No. 2 & 3

No Continuity

No. 2 & 4

No Continuity

No. 3 & 4

No Continuity

No. 3 & 4 ⁽¹⁾

Continuity

⁽¹⁾	Test with battery voltage applied to terminals No. 1 and 2.

OXYGEN SENSOR VOLTAGE TEST ⁽¹⁾

Condition

Volts

Lean

Rich

.45 or more

⁽¹⁾	Measure voltage between O2 sensor terminals No. 1 and 2.

PRESSURE SENSOR PIN CHECK

Engine

Sub-Harness Terminals

1.0L

1st Check

No. 9&29

2nd Check

⁽¹⁾ No. 31&29

3rd Check

No. 9&29

1.3L&1.6L

1st Check

No. 6&39

2nd Check

⁽¹⁾ No. 5&36

3rd Check

No. 6&39

⁽¹⁾	Measured voltage should be 4.5-5.5 volts. If 2nd check is within specification, but 1st check is not, replace pressure sensor.

PRESSURE SENSOR SPECIFIED VALUE (1.0L)

Altitude: Ft. (m)	Atmos. Pressure: In. Hg	Voltage
0 (0)	29.92	2.1-2.7
1640 (500)	28.19	1.9-2.5
3280 (1000)	26.54	1.8-2.4

PRESSURE SENSOR SPECIFIED VALUE (1.3L & 1.6L)

Altitude: Ft. (m)	Atmos. Pressure: In. Hg	Voltage
0 (0)	29.92	3.2-4.0
1640 (500)	28.19	3.1-3.8
3280 (1000)	26.54	3.0-3.6

THROTTLE POSITION SENSOR RESISTANCE SPECIFICATIONS

TPS Terminals		Ohms
Charade 1.0L - Throttle Fully Closed
No. 29 & 31		4250-8250
No. 30 & 31		3500-10,300
No. 29 & 32		Less Than 350
Charade 1.0L - Throttle Fully Open
No. 30 & 31		300-6300
No. 29 & 32 (Open More Than 1.5 Degrees)		Infinity
Charade 1.3L (A/T) - Throttle Fully Closed
No. 12 & 21		Less Than 29,000
No. 32 & 21		Less Than 29,000
Charade 1.3L (A/T) - Throttle Fully Open
No. 12 & 21		Infinity
No. 32 & 21		Infinity
Charade 1.3L (M/T) & Rocky 1.6L - Throttle Fully Closed
No. 12 & 29		Less Than 29,000
No. 32 & 29		Infinity
Charade 1.3L (M/T) & Rocky 1.6L - Throttle Fully Open
No. 12 & 29		Infinity
No. 32 & 29		Less Than 29,000