Honda HR-V: Testing
MICU INPUT TEST
NOTE :
- If you are troubleshooting multiple DTCs, be sure to follow the
instructions in B-CAN System Diagnosis
Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System
Diagnosis Test Mode A -
Initial Communication and DTC Checks,.
- Before testing, check for DTCs. If any DTCs are indicated, troubleshoot
those DTCs first.
- Before testing, make sure the No. B21 (10 A) fuse in the under-hood
fuse/relay box is OK.
1. Turn the vehicle to the OFF (LOCK) mode
2. Disconnect under-dash fuse/relay box connectors D, G, H, N, and Q.
NOTE :
All connector views are shown
from the wire side of the female terminals.: All connector views are shown from
the wire side of the female
terminals.
3. Inspect the connectors and socket terminals to be sure they are all making
good contact:
- If the terminals are bent, loose, or corroded, repair them as necessary,
and recheck the system.
- If the terminals are OK, go to step 4.
4. With the connectors still disconnected, do the following input tests:
- If any test indicates a problem, find and correct the cause, then
recheck the system.
- If all the input tests prove OK, go to step 5.
*1: Without keyless access system
*2: With keyless access system
*3: Display audio type
*4: Color audio type
*5: With navigation
*1: Without keyless access system
*2: With keyless access system
*3: Display audio type
*4: Color audio type
*5: With navigation
5. Reconnect the connectors to the under-dash fuse/relay box, and do the
following input tests:
- If any test indicates a problem, find and correct the cause, then
recheck the system.
- If all the input tests prove OK, the MICU must be faulty; replace the
under-dash fuse/relay box.
MULTIPLEX INTEGRATED CONTROL SYSTEM SLEEP AND WAKE-UP MODE TEST
1. Shift to the sleep mode: Close all doors. Turn the vehicle to the OFF
(LOCK) mode, 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.
- IG1 power supply
- IG2 power supply
- B-CAN data
- Hazard warning switch (OFF)
2. Confirm sleep mode:
NOTE : Check the official Honda service website for
more service information about
parasitic draw at the 12 volt battery. Check the parasitic draw at the 12 volt
battery while entering sleep mode;
amperage should change from about 200 mA to less than 35 mA in less than 40
seconds
3. Shift to wake-up mode: When the vehicle is turned to ON mode, the MICU,
the gauge control module, the
keyless access control unit*
1, the immobilizer-keyless control unit*
2, and the PCM will 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.
*1: With keyless access system
*2: Without keyless access system
NOTE : If any control unit is faulty and does not wake up, several circuits in
the system malfunction at the same time. Below is a list of the switches and
input signals that
wake them up.
- IG1 power supply
- IG2 power supply
- ACC power supply
- B-CAN data
- Driver's door lock switch (LOCK/UNLOCK)
- Driver's door switch (Open)
- Front passenger's door switch (Open)
- Left rear door switch (Open)
- Right rear door switch (Open)
- Tailgate latch switch (Open)
- Tailgate outer handle switch (Open)
- Driver's door key cylinder switch (LOCK/UNLOCK)
- Driver's door lock knob switch (LOCK/UNLOCK)
- Front passenger's door lock knob switch (UNLOCK)
- Left rear door lock knob switch (UNLOCK)
- Right rear door lock knob switch (UNLOCK)
- Security hood switch (Open)
- Hazard warning switch (ON)
- Combination light switch (Parking, Headlight, Dimmer, Passing, Fog ON)
- Ignition key switch (Key inserted)
CIRCUIT DIAGRAM
MULTIPLEX INTEGRATED CONTROL SYSTEM CIRCUIT DIAGRAM
COMPONENT LOCATION INDEX
MULTIPLEX INTEGRATED CONTROL SYSTEM COMPONENT LOCATION INDEX
READ NEXT:
Removal & Installation
1. Automatic Lighting Control Unit-Sensor - Remove
Pull out the automatic lighting control unit-sensor (A).
NOTE : Be careful not
to damage the automatic lighting contr
Removal & Installation
NOTE : SRS components are located in this area. Review the SRS component
locations - Refer to: SRS Component Location Index (KA/KC), or SRS Component
Location Index (KA/KC
SEE MORE:
Special Tools Required
Snap Ring Pliers 07LGC-0010100
Bearing Driver Attachment, 52 x 55 mm
07746-0010400
Driver Handle, 15 x 135L 07749-0010000
Replacement
NOTE: Apply a light coat of clean transmission fluid on all parts before
installation.
1. Transmission Fluid Pump Drive Sprocket Bearing -
NOTE: This is GENERAL information. This article is not intended to be
specific to any
unique situation or individual vehicle configuration. For model-specific
information see appropriate articles where available.
EXAMPLE #1 - VOLTAGE CONTROLLED DRIVER
The waveform pattern shown in Fig. 4 indicate a