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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Multiplex Sleep Mode Test

Multiplex Sleep Mode Test

1. Connect the positive lead of a voltmeter to No. 10 terminal of the under-dash fuse/relay box connector E (YEL) or K (WHT/GRN) and the negative lead to body ground.
2. Connect an ammeter between the negative battery cable and the negative battery post.
3. Remove the special tool from the multiplex control inspection connector.
4. Close the doors, the hatch, turn the headlights off, turn off the ignition switch and remove the key.
5. Within 1 minute, the voltage on the communication wire (E10 or K10) should change from about 4 - 10 V to battery voltage and the amperage at the negative battery terminal should drop from about 70 - 80 mA to less than 10 mA.
6. Record your findings and go to the Multiplex Wake-up Test.