Honda CR-V: Sleep and Wake-up Mode Test
1. Shift to the sleep mode:
Turn the ignition switch OFF, and remove the key. 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)
- Tailgate latch switch (tailgate closed)
- Tailgate outer handle switch
- Hazard warning switch (OFF)
2. Confirm the sleep mode:
Check for voltage on the B-CAN communication line; there should be battery
voltage in the sleep mode. Check the
parasitic draw at the battery while shifting into the sleep mode; amperage
should change from about 200 mA to
less than 35 mA.
3. Shift to the wake up mode:
When the ignition switch is turned ON (II), the MICU, gauge control module,
immobilizer-keyless control unit-receiver,
and PCM wake up at the same time without "talking" to each other through the
communication lines.
When any switch in the multiplex integrated control system is turned on, it
wakes up its related control unit which,
in turn, wakes up the other units. After confirming the 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 will not wake up, several circuits in
the system will malfunction at the same
time. The MICU is followed by 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 (UNLOCK)
- Left rear door lock knob switch
- Right rear door lock knob switch
- Tailgate latch switch (tailgate open)
- Tailgate outer handle switch
- Hood switch (with security) (hood open)
- Hazard warning switch (ON)
- Combination light switch (parking, headlight, dimmer, passing ON)
- Ignition key switch (key inserted)
Circuit Diagram

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DTC B1000: Communication Bus Line Error
(Bus-off)
1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the H
NOTE: Before testing, troubleshoot the B-CAN System Diagnosis Test Mode A.
1. Turn the ignition switch OFF.
2. Disconnect the under-dash fuse/relay box connectors E, F, G, K, R, and T.
NOTE: All con
Component Location Index
NAVIGATION UNIT or
AUDIO UNIT
IMMOBILIZER-KEYLESS
CONTROL UNIT
(Built-in receiver)
MICU (Built into the under-dash fuse/relay box)
HEADLIGHTS
HORN
HOOD SWITCH
SECUR
SEE MORE:
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled
conditions on a specified indoor
laboratory test wheel. Sustained high
temperature can cause the material
When you select ‘‘Song Search’’ from
the track list display, the song search
menu appears.
You can then select any of three
modes to search a file: Title by
Keyword, Artist, and Album.
Searching for a Song Title by Keyword
In Title by Keyword mode, enter the
title na
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