C1668

Component Location





General Description

TPM Receiver is integrated with the TPM module installed at the bottom of the steering column. The operating battery of TPM module is supplied from the vehicle battery. Data such as Tire pressure, Tire Temperature, TPM sensor battery status and TPM sensor valve ID from TPM sensors are transmitted to TPM receiver in the form of RF signal. TPM module accomplishes Tire Monitoring and Warning Logic with received data.

DTC Description

This DTC indicates that the receiver has detected an internal error.

DTC Detecting Condition





Component Inspection

1. Connect 'TPMS exciter' or scantool to Data Link Connector(DLC).




2. Clear DTC.
3. IG OFF & IG ON. Wait 4 minutes.
4. Execute "Diagnostic Trouble Codes(DTCs)".
5. Is 'C1668' present ?
YES
> Substitute with a known-good TPM Receiver module and check for proper operation.
> If the problem is corrected, replace TPM Receiver module and go to "Verification of vehicle Repair" procedure.
NO
> TPM receiver complete successful Auto-Learn.
> System is OK.

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.
1. Connect TPMS exciter or scantool and select "Diagnostic Trouble Codes(DTCs)" mode
2. Using a TPMS exciter or scantool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present ?
YES
> Go to the applicable troubleshooting procedure.
NO
> System performing to specification at this time.