TPS - Driveability Concerns

Number
00-36-006

Group
ENGINE ELECTRICAL

Date
MARCH, 2000

Subject
THROTTLE POSITION SENSOR (TPS)
DRIVEABILITY SYMPTOMS

Model
1996-1999 ACCENT
1996-2000 ELANTRA
1997-2000 TIBURON

DESCRIPTION:

The Throttle Position Sensor (TPS) output signal is an important input for both the Engine and Transaxle Control Modules. A malfunctioning TPS may result in the following symptoms:

^ Unstable idle

^ Uneven throttle response

^ Slip & shock during the 1-2 & 2-3 shift on Automatic Transaxle (ATM) equipped vehicles.

^ Erratic ATM shifts with possible shift flare (engine RPM increase during shifts)

^ Check engine light is ON (light may go off, but the code will remain stored)

^ TPS related code stored in the ECM and/or TCM

REPAIR INFORMATION:





1. If the following three conditions are met:

^ The Throttle Position Sensor (TPS) is suspected

^ The ECM / TCM has no codes stored

^ The Throttle Position Sensor (TPS) has the words "DAE SUNG" molded on the part

Then conduct the following diagnostic procedure:

^ The vehicle must be idling (with all accessories turned off)

^ Push on the side of the TPS connector, towards the dash panel. The force used should be firm enough to slightly deflect the TPS housing, but not enough to damage or break anything.

^ If the TPS is not operating properly, the engine will surge in response to your push.

^ If the Hi-Scan Pro or HDS is used to record the TPS output, the above procedure will show that the TPS output increases toward 5V when the connector is pushed.

2. If the ECM has a TPS related code stored (with or without the MIL on), replace the TPS.





PARTS INFORMATION

WARRANTY INFORMATION:

Normal warranty operation codes and times apply.