For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC P161C: Tire Size Not ProgrammedCircuit/System Description
This diagnostic addresses if the ECM is not programmed with the tire size.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | The DTC runs continuously once the above condition is met. |
Conditions for Setting the DTC
The ECM detects that the tire size is not programmed in the EEPROM for greater than 1 second.
Action Taken When the DTC Sets
DTCs P161C is a Type C DTC.
Conditions for Clearing the DTC
DTCs P161C is a Type C DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Circuit/System Testing
Program the ECM. If DTC P161C sets after programming, perform the following steps:
| • | Ensure that all tool connections are secure. |
| • | Ensure the programming equipment is operating correctly. |
| • | Ensure the correct software and the correct calibration is used. |
| • | Attempt to program the ECM. |
| ⇒ | If DTC P161C sets, replace the ECM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ECM replacement, setup, and programming.
