Elantra L4-2.0L (2004)
Confirm the PCM adjusts the duty during the N-R shift similar to graph (LR duty must change from 100% to 0-30% to 100% within 1-2 seconds).
^
If so, continue to next step.
^
If not, check the wiring between the PCM and transaxle for an open or short circuit. If the wiring is ok, replace the PCM (unified ECU & TCU).
Toggle the left and right keys to measure the start and end of the shift, then subtract the two numbers. If the N-R shift requires:
^
2.0 seconds or less: Go to Step 7.
^
More than 2.0 seconds: Swap a PCM (unified ECM and TCM) from a known good vehicle. If the condition is not improved, replace the transaxle.
HARSH OR DELAYED NEUTRAL-DRIVE ENGAGEMENT:
Perform Step 6.
Confirm the PCM adjusts the duty during the N-D shift similar to graphs (UD duty changes from 0% to 100% within 1-2 seconds).
NOTE:
The duty must change from 0% to 100% within 1-2 seconds. Both graphs show correct solenoid operation.
^
If so, continue to next step.
^
If not, check the wiring between the PCM and transaxle for an open or short circuit. If the wiring is ok, replace the PCM (unified ECU and TCU).
Toggle the left and right keys to measure the start and end of the shift, then subtract the two numbers. If the N-D shift requires:
^
2.0 seconds or less: Go to Step 7.
^
More than 2.0 seconds: Swap a PCM (unified ECM and TCM) from a vehicle with good shift quality. If the condition is not improved, replace
the transaxle.
7.
If Steps 1-6 indicate all components are within specification and no DTCs are found, compare the customer's vehicle with another vehicle of the
same year and model. If the engagement shock or delay is:
