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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Pinout Values and Diagnostic Parameters





AIR CONDITIONING: AIR CONDITIONING SYSTEM: TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER





HINT
Check from the rear of the connector while it is connected to the A/C amplifier.









*1: for 1UR-FSE

*2: for 2GR-FSE

(a) Waveform 1:









(b) Waveform 2:









HINT
When the blower level is increased, the duty ratio changes accordingly.