For 1990-2009 cars

System tests, using the scan tool, allow for the display of values as actually seen or commanded by the following various systems:

• | The PCM

• | The instrument cluster

• | The SDM

• | The EBCM

• | The BCM

The test types available are dependent upon the system selected, but may include the following types:

• | Data (Analog Inputs)

| Data (Analog Inputs) display analog values as seen by the system.

• | Inputs and outputs

- | Inputs and outputs display digital values as seen by the system.

- | Inputs and outputs provide an indication of whether the input or output has cycled.

• | Special Functions (output controls)

| Special Functions (output controls) allow for outputs of the system to be set at a desired value (ON or OFF).

• | Clear Codes

| Clear Codes will erase all of the DTCs stored for the system currently selected. If the malfunction is still present, the DTC may immediately reset.