C1212

DTC C1212 FIRST SPEED INPUT FAULT

GENERAL DESCRIPTION
Refer to DTC C1121. C1121

DTC DESCRIPTION
This DTC indicates that the Vehicle speed signal is not inputted normally The most likely cause is speed sensor failure/ speed signal line's open.

DTC DETECTING CONDITION





TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness and terminal condition. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
3. Has a problem been found?

YES
> Repair if necessary and then go to "Verification of Vehicle Repair" procedure.

NO
> Go to "Signal Circuit Inspection" procedure.

SIGNAL CIRCUIT INSPECTION

[CHECK OPEN]
1. Ignition "OFF"
2. Disconnect Vehicle speed sensor connector and TPMS receiver connector.
3. Measure resistance between terminal "3" of Vehicle speed sensor harness connector and terminal "18" of TPMS receiver harness connector.





4. Is the measured resistance within specifications?

YES
> Faulty Vehicle speed sensor may cause this DTC.
> Substitute with a known-good component and check for proper operation. If problem is corrected, it's failure should cause this DTC. After doing an appropriate repair, Go to "Verification of Vehicle Repair" procedure.

NO
> Repair as necessary in speed signal circuit and then go to "Verification of Vehicle Repair" procedure.

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.