Engine Controls - TPS Adjustment Procedure

Group
30 - FUEL SYSTEM

Number
97-30-001

Date
01-1997

Model
Sonata 1996-1997

Subject
THROTTLE POSITION SENSOR ADJUSTMENT PROCEDURE

DESCRIPTION:

The idle switch is incorporated in the Throttle Position Sensor (TPS) body on the 1996 - 1997 2.0L DOHC Sonata. To ensure proper adjustment, the idle switch is used to make the initial adjustment to the assembly. After adjustment, confirm that the TPS falls within the specified voltage value range given in the Shop Manual and this TSB.

SERVICE PROCEDURE:

1. Ensure that the engine idle, throttle cable and cruise control cable (if equipped) are adjusted properly. Refer to the appropriate Shop Manual for the adjustment procedure.

2. Connect the HDS scan tool to the data link connector and turn the ignition switch ON.

3. From the Menu, select "Transaxle", "Codes and Data Menu" and "Data" screen, then go to "IDLE SW".





4. Place a 0.025 in (0.65 mm) thick feeler gauge between the fixed Speed Adjusting Screw (SAS) and throttle lever.





5. Loosen the TPS mounting bolts and turn the TPS body fully counterclockwise. Confirm that the idle switch readout shows "CLSD".

6. Slowly turn the TPS body clockwise until the idle switch readout shows "OPEN". Carefully tighten the TPS mounting bolts securely.

7. Remove the feeler gauge.

8. Confirm that the idle switch changes from "CLSD" at idle to "OPEN" as the throttle is slightly opened.

9. Verify the TPS output voltage is within specification.

STANDARD VALUE: 0.4-1.0 V

NOTE
If the voltage is out of specification, check the TPS and associated harnesses for damage. Replace TPS and associated harnesses if necessary.

WARRANTY INFORMATION:

Normal warranty coverage and labor operations apply.