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)

Or, hide this message: temporarily or permanently

Pinout Values and Diagnostic Parameters








AIR CONDITIONING: AIR CONDITIONING SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY





(a) Measure the voltage and resistance of the connectors.













- If the result is not as specified, the A/C amplifier may have a malfunction.

2. CHECK ECM




- If the result is not as specified, the ECM may have a malfunction.

(a) Measure the voltage and resistance of the connectors.









(1) Waveform 1: