Honda CR-V: 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 connector views are wire side of female terminals.
UNDER-DASH FUSE/RELAY BOX CONNECTOR E (42P)

UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)

UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P)

UNDER-DASH FUSE/RELAY BOX CONNECTOR K (8P)

UNDER-DASH FUSE/RELAY BOX CONNECTOR R (20P)

UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)

3. Inspect the connector 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 look OK, go to step 4.
4. With the connector still disconnected, make these input tests at the
appropriate connector.
- 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.

5. Reconnect the connectors to the under-dash fuse/relay box, and make these
input tests at the connectors.
- 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.

READ NEXT:
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
Security Alarm System
NOTE: This applies to EX and EX-L models.
The security alarm system is armed automatically after the doors, hood, and
tailgate are closed and locked. For the
system to arm, the
DTC B1026: Front Passenger's Door Lock
Switch Signal Error (LOCK/UNLOCK)
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
1. Cl
SEE MORE:
Power Door Locks/Keyless
1. Check for B-CAN DTCs. If any B-CAN DTCs are indicated, troubleshoot and
resolve them first.
2. If the door lock system and the keyless operation. does not work, troubleshoot
the door locks first.
NOTE: The system does not function when the ignition switch is ON (II).
Unscrew and remove the engine oil
fill cap on top of the valve cover.
Pour in the oil slowly and carefully
you do not spill any. Clean up any
spills immediately. Spilled oil could
damage components in the engine
compartment.
Reinstall the engine oil fill cap, and
tighten it securely.
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