Multiplex Control Unit Input Test - Honda 2004 Odyssey Service Manual

Multiplex Control System

Multiplex Control Unit Input Test

Door Unit
1. Remove the driver's door panel (see page 20-7), and disconnect the connectors from the door multiplex control
unit.
2. 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 3.
NOTE: The illustration shows '99 models.
3. Make the following input tests at connector A (20P).
• 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 8.
Cavity Wire
A1 WHT/RED
A2 WHT/YEL
1
A12 Fuse/relay
box socket
A12 BLK
2
A13 BLK
3
A19
1: Passenger's multiplex control unit connector A
2: '03-04 (LX) models
3: '99-02 and '03-04 (EL, EXL) models
22-250
Test condition
Under all Check for voltage to ground:
conditions There should be battery voltage.
Ignition switch Check for voltage to ground on A2:
ON (II) and There should be battery voltage.
passenger's
multiplex
terminal A12
connected to
battery
voltage
Under all Check for continuity to ground:
conditions There should be continuity.
Under all Check for continuity to ground:
conditions There should be continuity.
Wire side of female terminals
Test: Desired result Possible cause if result is not obtained
• Blown No. 13 (7.5A) fuse in the
passenger's under-dash fuse/
relay box
• Blown No. 54 (40A) fuse in the
under-hood fuse/relay box
• An open in the wire
• Blown No. 51 (40A) fuse in the
under-hood fuse/relay box.
• Blown No. 15 (20A) fuse in the
passenger's under-dash fuse/
relay box
• Faulty power window relay
• An open in the wire
• Poor ground (G401)
• An open in the wire
• Poor ground (G551)
• An open in the wire