A/T - Poor 2nd to 1st Gear Low Speed Downshift

Group
40 - TRANSAXLE

Number
98-40-013

Date
10-1998

Model
Accent 1997-1998, Elantra 1997-1998 and Tiburon 1997

Subject
IMPROVED 2-1 DOWNSHIFT AT LOW SPEEDS

DESCRIPTION

Transaxle control modules (TCMS) for the 1998 Accent and Elantra have been modified to improve the acceleration following a "rolling stop" at 5-8 mph. These TCMs require a smaller throttle angle (approximately 50% TPS) to command a 2-1 downshift at low speeds.

For vehicles produced prior to this modification, after a deceleration to 5-8 mph, a larger throttle angle (above 80% TPS) is needed to command a 2-1 downshift. At throttle angles less than 80% TPS, the transaxle will not shift into 1st gear, but will remain in 2nd gear. As a result, the vehicle may feel sluggish or slow to accelerate.

If a customer advises you of this driveability condition for a 1997-98 Accent or Elantra, or Tiburon 1.8L, test drive the vehicle to confirm the condition. If no Diagnostic Trouble Code (DTC) or other driveability symptoms are found and the vehicle was produced prior to the effective production date, install the modified TCM.

SERVICE PROCEDURE





1. Locate the TCM under the driver's side of the lower crash pad, to the left of the brake pedal.

2. Using a 10 mm socket, remove the three bolts that mount the TCM to the body.

3. Install the modified TCM in the reverse order of removal.





PARTS INFORMATION