Throttle Position Sensor Adjustment Procedure (97-30-001)

Publication date: 1997-01-01
Reference number: 97-30-001

THROTTLE POSITION SENSOR ADJUSTMENT PROCEDURE

TECHNICAL SERVICE BULLETIN

Reference Number(s): 97-30-001, Date of Issue: January, 1997

HYUNDAI:	1996-97 Sonata
GROUP:	30 - Fuel System

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

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.
Connect the HDS scan tool to the data link connector and turn the ignition switch ON.
From the Menu select "Transaxle", "Codes and Data Menu" and "Data" screen, then go to "Idle SW".
Place a 0.025 in (0.65 mm) thick feeler gauge between the fixed Speed Adjusting Screw (SAS) and throttle lever. See Fig 1 .

Fig 1: Feeler Gauge
Loosen the TPS mounting bolts and turn the TPS body fully counterclockwise. See Fig 2 . Confirm that the idle switch readout shows "CLSD".

Fig 2: TPS Mounting Bolts
Slowly turn the TPS body clockwise until the idle switch readout shows "OPEN". Carefully tighten the TPS mounting bolts securely.
Remove the feeler gauge.
Confirm that the idle switch changes from "CLSD" at idle to "OPEN" as the throttle is slightly opened.
Verify the TPS output voltage is within specification.
1. 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.