AIRFLOW SENSOR
Airflow sensor testing requires use of multi-use tester. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
BAROMETRIC PRESSURE SENSOR
Barometric pressure sensor testing requires use of multi-use tester. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
COOLANT TEMPERATURE SENSOR
Note. Unless stated otherwise in test procedure, perform all tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance and/or a Multi-Use Tester (09391-33002 ).
| Temperature °F (°C) | Ohms |
|---|---|
| 32 (0) | 5900 |
| 68 (20) | 2500 |
| 104 (40) | 1100 |
| 176 (80) | 300 |
| (1) Measure resistance between sensor terminals. | |
| (1) | Measure resistance between sensor terminals. |
COOLANT TEMPERATURE SENSOR RESISTANCE TEST (1)
INTAKE AIR TEMPERATURE SENSOR
Note. Unless stated otherwise in test procedure, perform all tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance and/or a Multi-Use Tester (09391-33002 ).
| Temperature °F (C) | Ohms |
|---|---|
| 32 (0) | 6000 |
| 68 (20) | 2700 |
| 176 (80) | 400 |
| (1) Measure resistance between terminals No. 4 and 6. (Scheme 1) (2) As temperature increases, resistance decreases. | |
| (1) | Measure resistance between terminals No. 4 and 6. (Scheme 1) |
| (2) | As temperature increases, resistance decreases. |
INTAKE AIR TEMPERATURE SENSOR RESISTANCE TEST (1) (2)
THROTTLE POSITION SENSOR (TPS)
Note. Unless stated otherwise in test procedure, perform all tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance and/or a Multi-Use Tester (09391-33002 ).
| Throttle Position | Specification |
|---|---|
| Closed (1) | 3500-6500 Ohms |
| Slowly Open To WOT (2) | 450-550 To 4500-5500 mV |
| (1) On 1.5L, 1.6L and 2.0L, measure between terminals No. 1 (ground) and No. 4 (power). On 3.0L, measure between terminals No. 2 (ground) and No. 3 (power). (Scheme 2)and (Scheme 3). (2) On 1.5L, 1.6L and 2.0L, measure between terminals No. 1 and 3 (output). On 3.0L, measure between terminals No. 2 and 4 (output). | |
| (1) | On 1.5L, 1.6L and 2.0L, measure between terminals No. 1 (ground) and No. 4 (power). On 3.0L, measure between terminals No. 2 (ground) and No. 3 (power). (Scheme 2)and (Scheme 3). |
| (2) | On 1.5L, 1.6L and 2.0L, measure between terminals No. 1 and 3 (output). On 3.0L, measure between terminals No. 2 and 4 (output). |
THROTTLE POSITION SENSOR (TPS) RESISTANCE TEST
Scheme 1
Scheme 2
Note. For additional connector terminal identification, see I - SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.
IDLE POSITION SWITCH
Note. Unless stated otherwise in test procedure, perform all tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance and/or a Multi-Use Tester (09391-33002 ).
| Application | Specification | |
|---|---|---|
| Power Supply (1) | 4 Volts Or More | |
| Continuity Check | ||
| At Idle (Closed Throttle) (2) | 0 Ohms | |
| Off Idle (Open Throttle) | Infinity | |
| (1) On 1.5L and 3.0L, measure on harness side of connector. On 1.6L and 2.0L, measure at terminal No. 3 on harness side of connector. (2) Measure between ground and terminal No. 3 (1.5L) or terminal No. 1 (1.6L, 2.0L and 3.0L) on switch side of connector. | ||
| (1) | On 1.5L and 3.0L, measure on harness side of connector. On 1.6L and 2.0L, measure at terminal No. 3 on harness side of connector. |
| (2) | Measure between ground and terminal No. 3 (1.5L) or terminal No. 1 (1.6L, 2.0L and 3.0L) on switch side of connector. |
IDLE POSITION SWITCH TEST
MOTOR POSITION SENSOR (1.5L)
Note. Unless stated otherwise in test procedure, perform all tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance and/or a Multi-Use Tester (09391-33002 ).
| Between Terminals | Ohms |
|---|---|
| 4 & 5 | 3500-6500 |
| (1) Resistance should increase and decrease smoothly as idle speed control servo plunger extends and retracts. | |
| (1) | Resistance should increase and decrease smoothly as idle speed control servo plunger extends and retracts. |
MOTOR POSITION SENSOR RESISTANCE (1.5L) (1)
IDLE SPEED CONTROL SERVO
Note. Unless stated otherwise in test procedure, perform all tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance and/or a Multi-Use Tester (09391-33002 ).
| Between Terminals | Ohms |
|---|---|
| 1 & 2 | 5-35 |
IDLE SPEED CONTROL SERVO RESISTANCE (1.5L)
| Between Terminals | Ohms |
|---|---|
| 1 & 2; 2 & 3; 4 & 5; 5 & 6 | 28-33 |
IDLE SPEED CONTROL SERVO RESISTANCE (EXCEPT 1.5L)
CRANK ANGLE SENSOR
Crank angle sensor testing requires use of multi-use tester. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
TOP DEAD CENTER (TDC) SENSOR
Top dead center sensor testing requires use of multi-use tester. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
EGR TEMPERATURE SENSOR (CALIFORNIA)
EGR temperature sensor testing requires use of multi-use tester. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
VEHICLE SPEED SENSOR
Vehicle speed sensor testing requires use of multi-use tester. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
OXYGEN (O2) SENSOR
| Condition | Specification |
|---|---|
| Race engine | 0.6 Volt Minimum (1) |
| Sensor At 752°F (400°C) | 30 Or More Ohms (2) |
| (1) On 1.5L, measure voltage between sensor terminals (California). On 1.6L, 2.0L and 3.0L measure voltage between sensor terminals No. 3 and 4 of 4-wire connector. see scheme 4 (2) 1.6L, 2.0L and 3.0L | |
| (1) | On 1.5L, measure voltage between sensor terminals (California). On 1.6L, 2.0L and 3.0L measure voltage between sensor terminals No. 3 and 4 of 4-wire connector. see scheme 4 |
| (2) | 1.6L, 2.0L and 3.0L |
OXYGEN (O2) SENSOR TEST
