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

ELU2 - ELU Signal to PCM



- Key OFF.

- Install Breakout Box (leave PCM disconnected).

- Key ON.

Switch Position/Resistance Chart:





- Measure the resistance between the ELU Test Pin 11 and ground while exercising the inputs in the image.

- Compare readings to the table in the image.

- Are the resistances OK?

Yes -- Replace the PCM.

No -- Go to ELU3. ELU3 - ELU Power