Acura RSX Honda Integra. Manual — part 463
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Multiplex Sleep Mode Test
Multiplex Wake-up Mode Test
Operation
Method used for wake up
22-192
Multiplex Control System
Troubleshooting (cont’d)
1. Connect the positive lead of a voltmeter to terminal
No. 10 of the under-dash fuse/relay box connector
E (YEL) or K (WHT/GRN) and the negative lead to
body ground.
2. Connect an ammeter between the negative battery
cable and the negative battery post.
3. Remove the special tool from the multiplex
inspection connector.
4. Close the doors, the hatch, turn the headlights off,
turn the ignition switch OFF and remove the key.
5. Within 1 minute, the voltage on the communication
wire (E10 or K10) should change from about
4
10 V to battery voltage and the amperage at the
negative battery terminal should drop from about
70
80 mA to less than 10 mA.
6. Record your findings and go to the Multiplex Wake-
up Mode Test.
1. From the Sleep Mode, wake-up the multiplex
system by performing one of the following
operations:
Cycle ignition
switch ON (II)
All multiplex units wake up
simultaneously (regardless of
ability to communicate)
Turn
combination
light switch to
parking light
position
Multiplex control unit wakes
up the other units via
communication lines.
Open the
driver’s door
Multiplex control unit wakes
up the other units via
communication lines.
2. As the system shifts to its Wake-up (Active) Mode,
communication wire voltage will return to 4
10 V
and the battery terminal current will return to
70
80 mA.
3. If the system does not go into Sleep Mode or Wake-
up Mode properly, perform the Multiplex Control
Unit Input Test (see page 22-193).
NOTE: If multiple circuits fail to respond in the
Mode 2 tests and/or the multiplex circuit fails to go
into Sleep Mode or Wake-up Mode, it may mean
that a control unit failed without triggering a DTC in
Mode 1. Perform the Multiplex Control Unit Input
Test (see page 22-193).
If the input test confirms that all the inputs are
working properly, substitute a known-good
multiplex control unit, gauge assembly or ECM/
PCM, one at a time. If the system works properly
after swapping one of the above components,
replace the original component.
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22-193
Multiplex Control Unit Input Test
YEL
GRN/RED
BLK
CONNECTOR K (17P)
CONNECTOR O (12P)
CONNECTOR P (18P)
WHT/GRN
GRN/RED
RED
CONNECTOR Q (8P)
LT GRN/RED
GRN/ORN
GRN
BLU/RED
BLU/RED
CONNECTOR X (8P)
WHT/BLK
RED/WHT
CONNECTOR Y (13P)
BLK
BLK
CONNECTOR C (14P)
CONNECTOR E (13P)
CONNECTOR F (12P)
CONNECTOR J (8P)
GRN/RED
WHT/RED
GRN/ORN
BLU
1. Remove the driver’s dashboard lower cover (see page 20-63).
2. Disconnect the under-dash fuse/relay box connectors C, E, F, J, K, O, P, Q, X and Y.
NOTE: All connectors are wire side of female terminals.
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.
(cont’d)
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Cavity
Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
Cavity
Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
22-194
Multiplex Control System
Multiplex Control Unit Input Test (cont’d)
4. With the connectors still disconnected, make these input tests at the 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.
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J4
BLK
Under all conditions
Check for continuity to ground:
There should be continuity.
Poor ground (G301)
An open in the wire
Y6
BLK
Under all conditions
Check for continuity to ground:
There should be continuity.
Poor ground (G401)
An open in the wire
Y1
BLK
Under all conditions
Check for continuity to ground:
There should be continuity.
Poor ground (G401)
An open in the wire
5. Reconnect the connectors to the under-dash fuse/relay box, and make these input tests at the appropriate connectors on the under-dash
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, the multiplex control unit must be faulty, replace the under-dash fuse/relay box assembly.
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J2
WHT/RED
Under all conditions
Check for voltage to ground:
There should be battery voltage.
Blown No. 9 (7.5 A) fuse in the under-hood
fuse/relay box
An open in the wire
Q3
GRN
Driver’s door open
Check for voltage to ground:
There should be 1 V or less.
Faulty driver’s door switch
An open in the wire
Driver’s door closed
Check for voltage to ground:
There should be 5 V or more.
Faulty driver’s door switch
Short to ground
Q4
LT GRN/RED
Passenger’s door
open
Check for voltage to ground:
There should be 1 V or less.
Faulty passenger’s door switch
An open in the wire
Passenger’s door
closed
Check for voltage to ground:
There should be 5 V or more.
Faulty passenger’s door switch
Short to ground
Q8
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C8
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F1
GRN/ORN
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GRN/ORN
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GRN/RED
Parking brake lever
up
Check for voltage to ground:
There should be 1 V or less.
Faulty parking brake switch
An open in the wire
Parking brake lever
down
Check for voltage to ground:
There should be 5 V or more.
Faulty parking brake switch
Short to ground
Q5
BLU/RED
Ignition switch ON (II)
driver’s seat belt is
unbuckled.
Check for voltage to ground:
There should be 1 V or less.
Faulty driver’s seat belt switch
Poor ground (G551)
An open in the wire
Q6
BLU/RED
Ignition switch ON (II)
driver’s seat belt is
buckled.
Check for voltage to ground:
There should be 5 V or more.
Faulty driver’s seat belt switch
Short to ground
P18
RED
Hatch open
Check for voltage to ground:
There should be 1 V or less.
Faulty hatch latch switch
Poor ground (G701)
An open in the wire
Hatch closed
Check for voltage to ground:
There should be 5 V or more.
Faulty hatch latch switch
Short to ground
X5
RED/WHT
Ignition key is in the
ignition switch
Check for voltage to ground:
There should be 1 V or less.
Faulty ignition key switch
Poor ground (G401)
An open in the wire
Ignition key is out of
the ignition switch
Check for voltage to ground:
There should be 5 V or more.
Faulty ignition key switch
Short to ground
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Cavity
Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
22-195
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X8
WHT/BLK
Under all conditions
Attach to ground:
The ignition key light should come
on.
Blown No. 3 (7.5 A) fuse in the under-hood
fuse/relay box
Blown LED
An open in the wire
O7
GRN/RED
Ceiling light switch in
the middle position,
all doors closed
Attach to ground:
The ceiling light should come on.
Blown No. 3 (7.5 A) fuse in the under-hood
fuse/relay box
Faulty ceiling light
An open in the wire
C11
BLU
Under all conditions
Attach to ground:
Dash lights should come on.
Blown No. 2 (15 A)
No. 2 (10 A)
fuse in
the under-hood fuse/relay box
Faulty taillight relay
An open in the wire
F8
GRN/RED
Brake fluid reservoir
float in down
position (brake fluid
removed)
Check for voltage to ground:
There should be less than 1 V.
Faulty brake fluid level switch
An open in the wire
Brake fluid reservoir
float in up position
(brake fluid at full
level)
Check for voltage to ground:
There should be 5 V or more.
Faulty brake fluid level switch
Short to ground
E10
YEL
Under all conditions
Check for voltage to ground:
There should be battery voltage in
the sleep mode and 3
7 V when
awake.
An open or short in the wire
K10
WHT/GRN
Under all conditions
Check for voltage to ground:
There should be battery voltage in
the sleep mode and 3
7 V when
awake.
An open or short in the wire
: ’05-06 models
05/06/27 18:06:13 61S6M040_220_0196
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