Multiplex Integrated Control System Sleep and Wake-Up Mode Test

Multiplex Integrated Control System Sleep and Wake-Up Mode Test

1. Shift to sleep mode:

Close all doors. Turn the ignition switch to LOCK (0), then open and close the driver's door. If the MICU receives no signals from the inputs listed below, it will go into sleep mode in less than 40 seconds.

- Driver's door lock switch (LOCK or UNLOCK)

- Driver's door key cylinder switch (LOCK or UNLOCK)

- Front passenger's door lock switch (LOCK or UNLOCK)

- Full latch switch (Tailgate closed)

- Hazard warning switch (OFF)

- Power tailgate outer handle switch

- Power tailgate inside switch

- Power tailgate opener switch

2. Confirm sleep mode:

NOTE: Check any official Honda service website for more service information about parasitic draw at the battery. Check the parasitic draw at the battery after 40 seconds; amperage should change to less than 35 mA in less than 50 seconds.

3. Shift to wake up mode:

When the ignition switch is turned to ON (II), the MICU, and all B-CAN system components wake up. When any switch in the multiplex integrated control system is turned on, a message is sent to the related control unit(s) to command the desired function. After confirming sleep mode, look in the following table for the switch most related to the problem. Operate that switch and see if its control unit wakes up.

NOTE: If any control unit is faulty and does not wake up, several circuits in the system will malfunction at the same time. Below is a list of the switches and input signals that can wake it up.

- Door switches (Door open)

- Driver's door lock switch (LOCK or UNLOCK)

- Driver's door lock knob switch (LOCK or UNLOCK)

- Driver's door key cylinder switch (LOCK or UNLOCK)

- Front passenger's door lock switch (LOCK or UNLOCK)

- Front passenger's door lock knob switch (LOCK or UNLOCK)

- Left rear door lock knob switch

- Right rear door lock knob switch

- Full latch switch (Tailgate open)

- Security hood switch (Hood open)

- Hazard warning switch (ON)

- Combination light switch (Parking, Headlight, Dimmer, Passing ON)

- Ignition key switch (Key inserted)