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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Cruise Control Servo: Testing and Inspection


1. Check resistance between grounds G118 (VIN S and E) or G112 (VIN F and 8), G323 and G102.
2. If resistance is more than .1 ohm, clean and tighten both grounds and negative battery cable. If ground circuit is suspect, add a ground strap between engine block and bulkhead.
3. If resistance is less than .1 ohm, replace cruise control module and check for normal operation.