Honda Odyssey 2004. Manual — part 480
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07
S0X4A00J00050600000FAAT23
Inputs monitored by Passenger’s Multiplex Control Unit
Switch/Circuit
Note:
YES
NO
BRN Wire Communication Line Test
YES
NO
Communication Line Test
22-248
22-248
Multiplex Control System
Troubleshooting (cont’d)
DRIVER’S UNDER-DASH FUSE/RELAY BOX SOCKET
DOOR MULTIPLEX CONTROL UNIT CONNECTOR A (20P)
BRN
Front passenger’s key
cylinder switch
(LOCK/UNLOCK)
Front passenger’s door
lock knob switch
(UNLOCK EX models)
Right rear sliding door
lock knob switch
(UNLOCK EX models)
Front passenger’s door
lock switch (LOCK/
UNLOCK)
Front passenger’s door
switch (OPEN)
Right rear sliding door
switch (OPEN)
Tailgate key cylinder
switch
Security input
(DISCONNECTED EX
models)
1: The multiplex system should flash the ignition
key light and sound the beeper each time when the
key is turned to the LOCK or UNLOCK position, and
should not flash/beep as the key is returned to the
neutral position.
The multiplex system is OK. If the symptom
is still present, go to the input test for the system
with the problem (see these items), or refer to
multiplex input test (see page 22-250).
• Power door locks (see page 22-267)
• Security (EX models) (see page 22-267)
• Keyless (EX models) (see page 22-267)
• Power windows (includes key-off timer
operation) (see page 22-208)
•
(see page 22-140)
•
(see page 22-226)
•
(see page 22-110)
•
(see page 22-110)
• Dash lights brightness control (see page 22-154)
• Engine oil pressure indicator (see page 22-110)
Find the open or short in the circuit that was
not confirmed by the multiplex control system. If
the circuit is OK, replace the multiplex control unit
that monitors the circuit.
1. Remove the driver’s multiplex control unit from the
driver’s under-dash fuse/relay box.
2. Carefully pry off driver’s door switch trim (see page
20-7).
3. Disconnect door multiplex connector A (20P).
4. Check for continuity between No. 2 terminal of the
driver’s under-dash fuse/relay box socket and
No. 15 terminal of the door multiplex control unit
connector A (20P).
Replace the multiplex control unit most
closely related to failure.
Repair an open in the wire between the door
multiplex connector and the driver’s under-dash
fuse/relay box. If the wire is OK, replace the under-
dash fuse/relay box.
1
Turn the key two times
consecutively to each position
(LOCK/UNLOCK) to prevent
input from lock knob switches
causing false input
confirmations.
Start this test with both lock
knobs in the locked position.
Unlock one lock knob at a time,
and then return it to the locked
position before testing the next
lock knob switch.
Test by disconnecting then
reconnecting the Radio,
Navigation Display Unit, RES
display unit or RES DVD player
connector.
Entry light control, Key light timer
Automatic lights off (EX models)
Windshield wiper controls (front and rear)
Reminder chimes (Key-in, seat belt, lights-on)
Did the multiplex contr ol system conf ir m all the
cir cuits by f lashing the ignition key light and
sounding the beeper ?
Is ther e continuity?
03/07/29 10:24:34 61S0X050_220_0250
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08
S0X4A00J00050600000FAAT01
*02
10
S0X4A00J00050600000FAAT02
PNK Wire Communication Line Test
Shorted Communication Line Test
YES
NO
YES
NO
YES
NO
22-249
22-249
DRIVER’S MULTIPLEX CONTROL UNIT CONNECTOR B (22P)
PASSENGER’S MULTIPLEX
CONTROL UNIT CONNECTOR B (22P)
PNK
DOOR MULTIPLEX CONTROL UNIT CONNECTOR A (20P)
PNK
PASSENGER’S MULTIPLEX
CONTROL UNIT CONNECTOR B (22P)
1. Disconnect driver’s multiplex control unit
connector B (22P).
2. Disconnect passenger’s multiplex control unit
connector B (22P).
3. Check for continuity between No. 1 terminal of the
driver’s multiplex connector B (22P) and No. 9
terminal of the passenger’s multiplex connector B
(22P).
Replace the multiplex control unit most
closely related to the failure.
Repair an open in the wire between the door
multiplex B (22P) connector and the passenger’s
multiplex B (22P) connector.
1. Remove the driver’s multiplex control unit from the
driver’s under-dash fuse/relay box.
2. Carefully pry off the driver’s door switch trim (see
page 20-7).
3. Disconnect door multiplex connector A (20P).
4. Disconnect passenger’s multiplex control unit
connector B (22P).
5. Check for continuity between No. 15 terminal of
door multiplex connector A (20P) and body ground.
Repair short to ground in the wire between
door multiplex control unit connector A (20P) and
the driver’s under-dash fuse/relay box.
Go to step 6.
6. Check for continuity between No. 9 terminal of
passenger’s multiplex connector B (22P) and body
ground.
Repair short to ground in the wire between
passenger’s multiplex control unit connector B
(22P) and driver’s multiplex control unit connector
B (22P).
Replace driver’s multiplex control unit and
recheck the symptom.
Is ther e continuity?
Is ther e continuity?
Is ther e continuity?
03/07/29 10:25:36 61S0X050_220_0251
01
S0X4A00J00050600000FCAT00
Door Unit
Cavity
Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
22-250
Multiplex Control System
Multiplex Control Unit Input Test
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.
•
•
•
•
•
•
•
•
•
•
•
A1
WHT/RED
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
Blown No. 54 (40A) fuse in the
under-hood fuse/relay box
An open in the wire
A2
WHT/YEL
Ignition switch
ON (II) and
passenger’s
multiplex
terminal A12
connected to
battery
voltage
Check for voltage to ground on A2:
There should be battery voltage.
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
A12
Fuse/relay
box socket
A12
BLK
Under all
conditions
Check for continuity to ground:
There should be continuity.
Poor ground (G401)
An open in the wire
A13
A19
BLK
Under all
conditions
Check for continuity to ground:
There should be continuity.
Poor ground (G551)
An open in the wire
1: Passenger’s multiplex control unit connector A
2: ’03-04 (LX) models
3: ’99-02 and ’03-04 (EL, EXL) models
1
2
3
Wire side of female terminals
03/07/29 10:25:36 61S0X050_220_0252
02
Driver’s Unit
22-251
4. Remove the driver’s multiplex control unit from the driver’s under-dash fuse/relay box, and disconnect its
connectors.
5. 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 6.
(cont’d)
Wire side of female terminals
03/07/29 10:25:36 61S0X050_220_0253
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