Canada - A/T - Erratic Shifting/Failsafe Mode/DTC's Set

GROUP
TRANSAXLE

NO
00-40-008

DATE
DECEMBER 15/00

MODEL
ALL

SUBJECT

ATM SOLENOID CONTROL VALVE
DIAGNOSTIC TROUBLE CODES

Incorrect operation of the transaxle's Shift Control Solenoid Valves (SCSV-A, SCSV-B, SCSV-C) could result in the following symptoms:

^ Erratic shift

^ Transaxle held in 3rd gear Fail-Safe

^ Diagnostic Trouble Codes (see list in "DTC Information")

^ MIL illuminated

NOTE:
DO NOT replace an automatic transaxle for solenoid (SCSV) codes indicated as"Electrical Condition" in the "DTC Information" section of this bulletin. Instead, follow the repair procedure shown below.

REPAIR PROCEDURE:

1. Using the Hi-Scan Pro, select the: "Hyundai Vehicle Diagnosis" menu, "Automatic Transaxle menu, and then "Diagnostic Trouble Codes". Repeat the procedure, but select the "Engine" menu and then "Diagnostic Trouble Codes". Record the DTC and description.

NOTE:
Steps 2~5 are for 2000 MY and prior Elantra and Tiburon and all Accents. For other models, proceed to Step 6.

2. Clean the connections between the battery cables and the battery posts, then reinstall the cables ensuring a good, solid contact.





3. Clean the connection between the negative (-) battery cable and the transaxle case, then reinstall the cable ensuring a good, solid contact

IMPORTANT:
The SCSVs ground through the transaxle's case and negative (-) battery cable. It is important that steps 2 and 3 are followed properly.





4. Clean the connection between the negative (-) battery cable and the body ground bolt located next to the battery. Apply conductive grease to the connection before reinstalling the bolt.

NOTE:
Step 4 is necessary to ensure good contact for TCM ground through the body ground.

5. Measure voltage drop:

^ Start the engine and turn on the headlights.

^ Use a digital voltmeter to measure the voltage drop between the negative (-) battery terminal and the ground locations in Steps 3 and 4 (use VDC setting).
If the voltage drop is:

^ More than 0.1 volts: Replace the negative (~) battery cable.
^ Less than 0.1 volts: Go to Step 6.

All models:

6. Disconnect the connectors between the solenoids and the TCM. Check for bent pins or pins not fully inserted in the connector. Repair as necessary.

NOTE:
Clean connector pins with an electrical contact cleaner

7. Check the wiring harness in the engine compartment and inside the transaxle oil pan for a damaged wire or a short-to-ground.

8. Measure the resistance of the harness wires between the solenoid connector and the TCM connector. Refer to the appropriate ETM to find the correct pin terminals.

If the resistance is:

^ More than 1 ohm: Repair the harness.
^ Less than 1 ohm: Go to Step 9.

9. Refer to the DTC recorded in Step 1 If the DTC was:

^ An SCSV DTC except P0740 or 49: Replace the related solenoid
or solenoid assembly

^ DTC P0740 or 49: Replace the transaxle





10. Clear the codes and test drive the vehicle for two driving cycles (two key-on to key-off driving cycles including 1-2-3-4 upshifts and 4-3-2-1 downshifts). If the DTC returns replace the TCM

DTC INFORMATION:





For your reference the logic that the TCM uses to set SCSV trouble codes are listed.





TCM DTCs:
^ 1996 ~ 1999 Elantra/Tiburon (prior to June 1, 1999) ,
^ 1996 ~ 1999Accent





TCM DTCs (Pre-OBDII):.
^ Elantra and Accent (1995 and prior)
^ 1995 ~ 1998 Sonata





ECM DTCs:
^ 1995 1998 Sonata

Warranty Information:

Normal warranty policies and procedures apply