Data Display

The scan tool's data display function can be helpful in determining if the Real Time Dampening (RTD) system is operating properly and reading the correct data from a particular component.

An example of the use of the scan tool data display functions to diagnose a VSS malfunction might involve the Powertrain Control Module (PCM) data display. For example, the RTD system stores a DTC C1743 (Loss of Vehicle Speed Signal). In order to diagnose this condition using the scan tool, select the PCM's data display function. Then, check if the PCM is receiving and interpreting the proper VSS data from the sensor. If the PCM is not reading the proper VSS data, the RTD system is not the problem. The PCM must be further diagnosed.

If the PCM is receiving and interpreting the proper VSS data, then select the Instrument Panel Cluster (IPC) data display function and check if the IPC is able to receive the VSS data from the PCM. If the PCM and the IPC are both able to receive this data then carefully inspect where the RTD system receives this input.