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Description This bulletin provides information related to the Throttle Position Sensor (TPS) for Sorento & Sedona models. Some Sorento & Sedona vehicles may exhibit diagnostic trouble codes P0121 and/or P1121. This condition mainly occurs in high ambient or desert areas, and can be related to the occasional increase in contact resistance due to excessive wear of the inner elements of the TP sensor. This bulletin describes the proper service and adjustment procedure for replacing the TP Sensor. – Service Procedure Replacement Procedure: 1. Turn ignition OFF. Remove engine cover and disconnect electrical connector from TP Sensor. 2. Remove two (2) retaining screws from TP Sensor and remove from throttle body. 3. Install new TP Sensor to throttle body. Install retaining screws and hand tighten lightly. Adjustment will be required. Re-install electrical connector to TP Sensor.

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DESCRIPTION The Throttle Position (TP) sensor is a potentiometer. The TP sensor is connected to the throttle shaft on the throttle body. By monitoring the voltage on the signal line, the VCM calculates throttle position. As the throttle valve angle is changed (accelerator pedal moved), the TP sensor signal also changes. At a closed throttle position, the output of the TP sensor is low. As the throttle valve opens, the output increases so that at Wide Open Throttle (WOT,) the output voltage should be above 4.0 volts. PURPOSE The VCM calculates fuel delivery based on throttle valve angle (driver demand). A broken or loose TP sensor may cause intermittent bursts of fuel from an injector. This may cause an unstable idle because the VCM detects the throttle is moving.

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Throttle Body And TPS – Remove throttle body, refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES. Throttle Stop Screw – Check that there is no clearance between throttle stop screw and lever with throttle plate in the fully closed position. TPS Screws – Loosen throttle position sensor set screws. TPS Adjustment Connect ohmmeter across throttle sensor terminals E2 and IDL. – Insert a 0.0157 in (0.40 mm) feeler gauge between throttle stop screw and lever. TPS Adjustment – Slowly turn sensor clockwise until ohmmeter shows no continuity. – Tighten sensor set screws. – Check adjustment with the following feeler gauges and note ohm reading: 0.010 in (0.25 mm) – Continuity 0.0335 in (0.85 mm) – No continuity – If desired results cannot be achieved, readjust sensor. If readings still cannot be achieved, replace sensor.

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Linkage Measurement CAUTION: Before attempting to test the Throttle Position Sensor (TPS), verify the linkage adjustment dimension shown in the figure above. This dimension MUST be 126.5 mm (5.0 inches) BEFORE testing. For linkage adjustment procedures, refer to Throttle Linkage Adjustment. CAUTION: Before testing the TPS, verify that the engine is set at correct low idle speed. Refer to Idle Speed Adjustment. This can be found in the Fuel Delivery and Air Induction system adjustments section. 1. After confirming the correct linkage adjustment and idle speed, proceed to the following: Throttle Position Sensor Location 2. Attach a paper clip into the center terminal of the TPS electrical connector. Do not remove the connector from the TPS for this test. 3. Attach the positive lead of a voltmeter to this paper clip and the negative lead to a good ground. 4. Turn the ignition switch to the ON position. Do not start engine. 5. The voltage at the TPS center terminal should be 1.0 volt (+/- 0.2 volt) with linkage at idle position. The voltage at the wide open throttle position

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Crankshaft Position Sensor: Service and Repair Crankshaft Position Sensor Crankshaft Position Sensor The crankshaft position sensor is mounted to the transmission bellhousing at the left/rear side of engine block. This engines have the sensor attached with two bolts. REMOVAL Some model/engine combinations may require removal of air cleaner tubes for access to sensor. 1. Remove air cleaner tube(s) at throttle body (if necessary). 2. Near rear of intake manifold, disconnect pigtail harness (electrical connector) from main electrical harness. 3. Depending upon application, remove either sensor mounting bolts or nuts. 4. Remove sensor. INSTALLATION 1. Install sensor flush against opening in transmission housing. 2. 2.5L engines equipped with automatic transmission: Install and tighten two sensor mounting nuts to 19 N.m (14 ft. lbs.) torque. 3. Install and tighten two sensor mounting bolts to 19 N.m (14 ft. lbs.) torque. The two sensor mounting bolts are specially machined to correctly space unit to flywheel. Do not attempt to install any other bolts. 4. Connect sensor pigtail harness electrical connector to main wiring harness