Honda 2004 Odyssey, Service Manual

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Cavity Wire Test condition Test: Desired result
Cavity Wire Test condition Test: Desired result
Possible cause if result is not obtained
Possible cause if result is not obtained
22-155
4. With the control unit still disconnected, make these input tests at the connector and fuse/relay box socket.
• 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.
•
•
•
•
•
•
A12 Fuse/relay
box socket
Under all
conditions Check for voltage to ground:
There should be battery voltage. Blown No. 13 (7.5A) fuse in the
passenger’s under-dash fuse/
relay box
An open in the wire
A14 Under all
conditions Check for continuity to ground:
There should be continuity. Poor ground (G401)
An open in the wire
B3
·
B4
RED/WHT
and
WHT/RED
Adjusting dial
rotated Check for resistance between
the B3 and B4 terminals:
There should be 0
20 k at all
times.
Faulty dash lights brightness
controller
An open in the wire
5. Reconnect the driver’s multiplex control unit to the fuse/relay box, and perform the following input tests at the
appropriate connectors on the back of the fuse/relay box.
• 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 6.
•
•
•
•
•
O3 RED/BLK Combination
light switch
ON (
) or
( )
Check for voltage to ground:
There should be battery voltage. Blown No. 10 (15A) fuse in the
passenger under-dash fuse/relay
box
Faulty combination light switch
Faulty taillight relay
An open in the wire
I6 RED Combination
light switch
ON (
) or
( )
Attach to ground:
Dash lights should come on full
bright. An open in the wire
6. If all the input tests prove OK, the driver’s multiplex control unit must be faulty. Substitute a known-good control
unit, then recheck the system. If the system works properly, the original control unit is faulty; replace it.
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