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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Control Module HVAC: Testing and Inspection

Amplifier Terminal ID:




Amplifier Circuit Checks:








1. Disconnect amplifier and check connector on wire harness side as shown on the chart.
2. If circuit is as specified but the problem still exists, replace the amplifier.

TEST CONDITIONS

1. Ignition switch: "ON."
2. Temperature control dial: "MAX COOL."
3. Blower control: "HI."