Hyundai Tiburon V6-2.7L Transmission Speed Sensor

This bulletin updates TSB 01-40-005 to add additional DTC code information. An improperly functioning input speed sensor or output speed sensor may result in the following four conditions:
1 “Check Engine” light on ‘
2. Harsh P-R or P-D engagement shock W I.
3. Transaxle accelerates in 1st gear to approximately 5000 rpm, then shifts into 3rd gear “fail-safe”
4. Diagnostic trouble codes shown.
REPAIR PROCEDURE:
1. Using a Hi-Scan Pro, check for DTCs in both the “Engine” and “Automatic Transaxle” menus. Record the DTC and description.
2. From the Hi-Scan Pro, select: ” “Hytmdai Diagnosis” menu ” Vehicle A “Auto Transaxle” menu ” “Current Data” A “Input speed sensor” and “Output speed sensor”. While driving the vehicle, if both input and output speed sensors show: ” Continuous output, go to Step 6 (NOTE: This test indicates the harness does not currently have an open or short circuit) O A No output or intermittent output, go to Step 3
3. Check the wiring harness visually for any damage.
4. Check the connectors at the input and output speed sensor and PCM/TCM for bent pins or pins not fully inserted into the connector. Repair or replace as necessary.
5. Follow the directions in the “Wire Harness Repair Kit”, P/N TRKOOA, and check the harness pin tension for the connectors to the input and output speed sensors and PCM/TCM. Repair or replace as necessary.
6. Follow the repair procedure below (NOTE: This step is necessary because the sensor may have an intermittent signal at high temperature or vibration): NOTE: Use an air nozzle to remove any debris around the sensor. Carefully clean the area where the sensor mounts before reinstalling the sensor.
7. Drive the vehicle for at least two key-on to key-off driving cycles. If the codes: ” Do not set again, retum the vehicle to the customer A Set again, go to step 8
8. Refer to the appropriate ETM and use a DVOM to cheek the resistance of the wiring between the TCM and the input sensor and output sensor (connect a small 1-pin to the DVOM when probing the connector to avoid damage). If the resistance is: ” More than 1 ohm, repair or replace the wiring harness 1
A Less than l ohm, go to Step 9
9. Replace the transaxle control module (TCM) or powertrain control module (PCM).