Operation CHARM: Car repair manuals for everyone.
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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Controller Test

Dash Lights Brightness Controller

Controller Test

1. Before testing the controller, do the control unit input test.




2. Remove the gauge assembly (A).
3. Disconnect the 30P connector (B).
4. At the gauge assembly 30P connector A, measure resistance between the No. 19 and No. 18 terminals while rotating the adjusting dial. Resistance should vary from 0 to 20,000 Ohms as the dial is rotated.
5. If the resistance is not as specified, replace the gauge assembly.