Summit L4-1597cc 1.6L DOHC (1990)
c.
Be careful while removing the Throttle Position Sensor and the Idle Speed Control Servo screws. They have been coated with an adhesive.
INSTALLATION OF THE TPS TO THE THROTTLE BODY
TPS Temporarily Mounted
1.
Install the TPS on the throttle body and temporarily tighten the screws.
Location Of TPS
2.
Measure the resistance between terminals # 1 and # 4 of the TPS. Standard Resistance: 3.5-6.5 k ohms
2.
Connect an ohmmeter to terminals # 1 and # 2 of the TPS connector.
3.
Verify that the resistance changes smoothly as the throttle valve is fully opened and closed slowly.
4.
Connect the ohmmeter to terminal # 2 and terminal # 4 of the TPS connector.
5.
Verify that the resistance changes smoothly as the throttle valve is fully opened and closed slowly.
If resistance changes smoothly, then the TPS has been installed correctly.
IDLE POSITION SWITCH CONTINUITY CHECK, after reassembly.
Idle Position Switch Continuity Check
6.
Check for continuity between terminal # 1 and the Throttle Position Sensor.
^
While the throttle valve is fully closed - continuity should exist.
^
While the throttle valve is fully opened - continuity should NOT exist.
Replace the Idle Position Switch, if the results differ from above.
