Operation CHARM: Car repair manuals for everyone.

Multiplex Sleep Mode Test

Multiplex Sleep Mode Test

1. Connect the positive lead of a voltmeter to terminal 10 of the under-dash fuse/relay box connector E (YEL) or K (WHT/GRN) and the negative lead to body ground.
2. Connect ammeter between the negative battery cable and the negative battery post.
3. Remove the special tool from the multiplex 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 approx 4 - 10 V to battery voltage and the amperage at the negative battery terminal should drop from approx. 70 - 80 mA to less than 10 mA.
6. Record your findings and go to the Multiplex Wake-up Test.