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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Test F

PINPOINT TEST F: NO COMMUNICATION WITH THE DUAL AUTOMATIC TEMPERATURE CONTROL (DATC) MODULE

Test F1:

Test F2-F3:

Normal Operation
Under normal operation, the DATC module receives a ground through circuit 1203 (BK/LB). The DATC module is supplied constant battery voltage through circuit 729 (RD/WH) and ignition switched voltage through circuit 1050 (LG/VT).

Possible Causes
- An open in circuit 1203 (BK/LB), 729 (RD/WH) or 1050 (LG/VT).
- DATC module.