Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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4X4 Low Switch

4x4 Low Switch
The 4x4 Low Switch sends a ground signal to the instrument cluster when in 4x4 low. This input is used to adjust the shift schedule.

Using Standard Corporate Protocol (SCP), the cluster provides a 4x4 status signal to the PCM.