For 1990-2009 cars

Table 1: | Engine Control Module (ECM)
Table 2: | Body Control Module (BCM)

#### Engine Control Module (ECM)

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
A/C Relay | Output Controls | The scan tool displays ON or OFF selections. This command allows you to turn the A/C relay On or Off for 5 seconds. When the A/C relay is commanded On, the A/C compressor clutch should be engaged.

#### Body Control Module (BCM)

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
Afterblow | Miscellaneous Test | The scan tool displays ON and OFF selections. This command allows you to turn Afterblow On or Off. Afterblow is a feature that dries the evaporator core by operating the blower motor after the engine is turned off.