2006 ACURA CSX fuse box


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22-109
MICU Input Test
UNDER-DASH FUSE/RELAY BOX CONNECTOR E (42P)BLK
BLK
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
BLK ORN UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P)
1. Before troubleshooting the multiplex integrated control system, troubleshoot the system using B-CAN System
Diagnosis Test Mode A (see page 22-93).
2. Check the No. 10 (7.5 A) fuse in the under-dash fuse/relay box. If the fuse is blown, replace it and go to step 3.
3. Disconnect under-dash fuse/relay box connectors E, F, G, K, and T. NOTE: All connector views are wire side of female terminals.
(cont’d)
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22-110Multiplex Integrated Control System
MICU Input Test (cont’d)
UNDER-DASH FUSE/RELAY BOX CONNECTOR K (8P)
PNK
BLK
UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
4. 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.
 IftheterminalslookOK,gotostep5.
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Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
Cavity Wire Test condition Test: Desired result Possible cause if desired result is
not obtained
22-111
5. With the connector still disconnected, do these input tests at the following connectors.
 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.






G2 ORN Under all conditions Measure the voltage to ground:
There should be battery voltage.Blown No. 23 (10 A) fuse in the
under-hood fuse/relay box
An open in the wire
K4 PNK Under all conditions Attach to ground: The ceiling light should come
on.Blown No. 22 (7.5 A) fuse in the
under-hood fuse/relay box
Blown bulb(s)
Faulty ceiling light
An open in the wire
6. Reconnect the connectors to the under-dash fuse/relay box, and do these input tests at the following 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.








E6 BLK Under all conditions Measure the voltage to ground:
There should be less than 0.5 V.Poor ground (G602)
An open in the wire
E33 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G601)
An open in the wire
F20 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G401)
An open in the wire
T34 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G501)
An open in the wire
08/08/21 14:25:02 61SNR030_220_0113
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22-112Keyless/Power Door Locks/Security System
Component Location Index
NAVIGATION UNIT or
AUDIO UNIT
IMMOBILIZER-KEYLESS
CONTORL UNIT
(With built-in receiver)
SECURITY INDICATOR GAUGE CONTORL MODULE
(SPEEDO)
HEADLIGHT
HOOD SWITCH
MICU
(Built into the under-
dash fuse/relay box)
HORN
TRANSMITTER
LOCK BUTTON TRUNK BUTTON
UNLOCK BUTTON
IGNITION KEY PANIC BUTTONSymptom Troubleshooting,
page 22-126
Replacement, page 22-332
Replacement, page 22-174
Adjustment, page 22-173
Bulb Replacement, page 22-177
Test, page 22-141
Input Test, page 22-131
Test/Replacement, page 22-146
Test/Replacement, page 22-142
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´
22-116Keyless/Power Door Locks/Security System
Circuit Diagram
Q1
G2
G21 D2
ORN
GRN
BRN
G503 G501 G504 G504 IG1 HOT in ON (II) and START (III)
8 T22
LT BLU
BLK10LOCK
LOCK
YEL
T30
1
6
PUR
T29
BLK 2
11
BLK
T27
GRY
19 17 T28
BLU
LOCK LOCK
KEY
MICU No. 25 (20 A)
ORN
IG1
5
BLK
No. 23 (10 A)
T24
LT GRN 6
UNDER-DASH FUSE/RELAY BOX
WHTT23
7
LOCK
PNK
T32
9
8
BRN
T31 No. 10 (7.5 A)
BLU
IGNITION SWITCH
IG1
BAT
BLU
WHT
No. 4 (P/W) (40 A)
BATTERY
No. 1 (BAT) (100 A) No. 2 (IG) (50 A)
UNDER-HOOD FUSE/RELAY BOX
UN-
LOCKUN-
LOCK
UN-
LOCK
DRIVER’S
DOOR LOCK
SWITCH DRIVER’S
DOOR KEY
CYLINDER
SWITCHDRIVER’S
DOOR LOCK
KNOB SWITCH
DOOR
LOCK
KNOB
DOOR
LOCK
KNOB
FRONT
PASSENGER’S
DOOR LOCK
KNOB SWITCH
FRONT
PASSENGER’S
DOOR LOCK
SWITCH
UN-
LOCK
UN-
LOCK
LIGHT
(LED)
LIGHT
(LED)
H1
K2
D4
BBACKUPWHT
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Î
22-117
UART
UART
MAIN CIRCUIT
PNK PNK 20*1
21
LT GRN*1
T34 E6
G501 BLK
SG
BLK
G602 PG
F20
E33
G601 BLK BLK
G401 YEL
BLU
BLU
BLU
B-CAN
M10
E21E31
BLU
E1 E14
YEL
43 1
2 N7
YEL M8
4
BLU 3
N13
1
BLU 2
YEL A
MICU
1
Q6 4
PNK
WHT
IMMOBILIZER-KEYLESS
CONTROL UNIT
DRIVER’S
DOOR LOCK
ACTUATOR FRONT
PASSENGER’S
DOOR LOCK
ACTUATORLEFT REAR DOOR
LOCK ACTUATOR
RIGHT REAR DOOR
LOCK ACTUATOR SECURITY
INDICATOR
(LED)
B-CAN
TRANSCEIVER
GAUGE CONTROL
MODULE (TACH)
GAUGE CONTROL
MODULE (SPEEDO):CANline
2*2 7*1
1*2
GRY*2 *1: Except TYPE S model
*2: TYPE S model
: Other communication line
UNDER-DASH FUSE/RELAY BOX
UNLOCK
(DR) UNLOCK
LOCK
TRANSMITTER
(cont’d)
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Î
22-118Keyless/Power Door Locks/Security System
Circuit Diagram (cont’d)
 
G18
HORN
LT GRN
G7
G16
T26
PNK
BRN
G602BLK8
10
5
7
BLK
G602
BRN
GRY T25
BLU/BLK GRN
F27
5
1
BLK
G101
E2
GRY
*4
E17
BRN
*3
E3
LT GRN
*2
*1
GRN
E37
G504 BLK
2 1
PNK
R6
PNK R16 WHT
WHT
MICU No. 4 (H/L) (50 A)
(UNDER-HOOD
FUSE/RELAY BOX)
PARKING
LIGHTS LEFT/RIGHT
HEADLIGHTS
(LOW BEAM)
UNDER-DASH
FUSE/RELAY BOX No. 12 (15 A) FUSE
(UNDER-HOOD
FUSE/RELAY BOX)
IMMOBILIZER-
KEYLESS
CONTROL UNIT IGNITION
KEY
SWITCH
(Closed:
Key inserted) TRANSMISSION
RANGE SWITCH
(Closed:
In position P)
UN-
LOCKLEFT
REAR
DOOR
LOCK
KNOB
SWITCH RIGHT
REAR
DOOR
LOCK
KNOB
SWITCH
UN-
LOCK
SIDE
MARKER
LIGHTS
(A/T)
1111
1
No. 19
(15 A)No. 15
(7.5 A) No. 21
(30 A)*5
(20 A)*6No. 17
(15 A)*5
(10 A)*6No. 16
(15 A)*5
(10 A)*6
08/08/21 14:25:10 61SNR030_220_0120
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Î
22-119
9 4
G505 BLK Q4
GRN
BLU
BLU
2 3
BLK
G701 BLU
G13
BLK
G401 2
1
LT BLU GRN
1
A
MICU
HOOD
SWITCH
(Closed:
Hood open) TRUNK LID
RELEASE
ACTUATOR/
TRUNK LID
LATCH SWITCHTRUNK
LIGHT UNDER-DASH FUSE/RELAY BOX
AUDIO
UNIT
or
NAVIGATION
UNIT
E36
E20
*1: DRIVER’S DOOR SWITCH (Closed: Door open)
*2: FRONT PASSENGER’S DOOR SWITCH (Closed: Door open)
*3: LEFT REAR DOOR SWITCH (Closed: Door open)
*4: RIGHT REAR DOOR SWITCH (Closed: Door open)
*5: With HID
*6: Without HID
08/08/21 14:26:01 61SNR030_220_0121
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