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
READ NEXT:
DTC Troubleshooting
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
MICU Input Test
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
Keyless/Power Door Locks/Security
System
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:
Troubleshooting
Troubleshooting - B-CAN System
Diagnosis Test Mode A
Check the PCM for DTCs, and troubleshoot PCM or F-CAN loss of communication errors
first, then do this diagnosis if the symptom is related to
the B-CAN system.
NOTE: Always cycle the ignition switch within
3 seconds when prompted in the DTC troub
To Select a Station
You can use any of five methods to
find radio stations on the selected
band: tune, seek, scan, the preset
buttons, and auto select.
TUNE - Use the TUNE knob to
tune the radio to a desired frequency.
Turn the knob to the right to tune to
a higher frequency, and turn it to the
left to tu
