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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DTC ECM-715D






Condition







The engine control module (ECM) has a detected an internal temperature of 90 degrees C.

Substitute value
The engine coolant fan starts at low speed.

Possible source
- high output temperature
- blocked air intake to the control module box
- the car has been in a varnishing furnace.

Fault symptom[s]
None.