Acura CSX. Manual — part 539
*01
SNR9A00J32323300000EAAT00
−
−
22-203
Circuit Diagram
5
6
R13
ORN
LT BLU
BLK
5
7
G501
LOCK
WHT
T23
BRN
T24
LT GRN
6
4
UNDER-DASH FUSE/RELAY BOX
7*2
1*1
8*1
9*2
K5
G3
D2
PG
SG
PNK
R16
G501
BLK
T34
BLK
G401
F20
E2
GRY
LT BLU
LT BLU
CEILING LIGHT
BLU
PNK
FRONT
INDIVIDUAL
MAP LIGHTS
PNK
DOOR
IG1
Q6
B-CAN
No. 22 (7.5 A)
No. 2 (IG) (50 A)
No. 1 (BAT) (100 A)
OFF
UNDER-DASH FUSE/RELAY BOX
(7.5 A)
No. 10
PNK
PNK
RED
BLU
BRN
E17
E33
R6
G601
BLK
E6
BLK
G602
K4
MICU
E3
E37
GRN
LT GRN
G504
BLK
PNK
1
2
WHT
IG1
BAT
UNDER-HOOD FUSE/RELAY BOX
BATTERY
IGNITION SWITCH
IG1 HOT in ON (II)
and START (III)
INTERIOR
LIGHT
SWITCH
IMMOBILIZER-
KEYLESS CONTROL
UNIT
DRIVER’S
DOOR
SWITCH
(Closed:
Door open)
FRONT
PASSENGER’S
DOOR SWITCH
(Closed:
Door open)
LEFT
REAR DOOR
SWITCH
(Closed:
Door open)
RIGHT
REAR DOOR
SWITCH
(Closed:
Door open)
IGNITION
KEY
SWITCH
(Closed:
Key inserted)
IMMOBILIZER-
KEYLESS
CONTROL
UNIT
DRIVER’S
DOOR
LOCK
KNOB
SWITCH
UN-
LOCK
IGNITION
KEY LIGHT
(LED)
H1
D2
1
1
1
1
: CAN line
*1: ’06 07 models
*2: ’08 09 models
TRANSMITTER
08/08/21 14:27:54 61SNR030_220_0205
01
SNR9A00J32323341951FCAT00
22-204
Entry Lights Control System
MICU Input Test
UNDER-DASH FUSE/RELAY BOX CONNECTOR E (42P)
BLK
BRN
GRY
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
BLK
BLK
LT GRN
GRN
1. Before testing the entry lights 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 any fuse is blown, replace it and go to step 3.
3. Disconnect under-dash fuse/relay box connectors E, F, K, R, and T.
NOTE: All connector views are shown from wire side of female terminals.
08/08/21 14:27:54 61SNR030_220_0206
02
Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
22-205
UNDER-DASH FUSE/RELAY BOX
CONNECTOR K (8P)
PNK
WHT
BLK
PNK
UNDER-DASH FUSE/RELAY BOX
CONNECTOR R (20P)
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.
• If the terminals look OK, go to step 5.
5. With the connectors still disconnected, do this input test at the following 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 6.
•
•
•
•
•
•
K4
PNK
With the ceiling light
switch in the middle
position
With moonroof:
with the interior light
switch in DOOR
position
Attach to ground:
The ceiling light and front
individual map lights should
come on.
Blown No. 22 (7.5 A) fuse in
the under-hood fuse/relay
box
Blown bulb(s)
Faulty ceiling light
Faulty front individual map
light
Faulty interior light switch
(with moonroof)
An open in the wire
08/08/21 14:27:54 61SNR030_220_0207
Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not
obtained
22-206
Entry Lights Control System
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
E37
GRN
Driver’s door open
Measure the voltage to ground:
There should be less than 1 V.
Faulty driver’s door switch
An open in the wire
Driver’s door closed
Measure the voltage to ground:
There should be more than 5 V.
Faulty driver’s door switch
A short to ground in the wire
E3
LT GRN
Front passenger’s door open
Measure the voltage to ground:
There should be less than 1 V.
Faulty front passenger’s door switch
An open in the wire
Front passenger’s door closed
Measure the voltage to ground:
There should be more than 5 V.
Faulty front passenger’s door switch
A short to ground in the wire
E2
GRY
Right rear door open
Measure the voltage to ground:
There should be less than 1 V.
Faulty right rear door switch
An open in the wire
Right rear door closed
Measure the voltage to ground:
There should be more than 5 V.
Faulty right rear door switch
A short to ground in the wire
E17
BRN
Left rear door open
Measure the voltage to ground:
There should be less than 1 V.
Faulty left rear door switch
An open in the wire
Left rear door closed
Measure the voltage to ground:
There should be more than 5 V.
Faulty left rear door switch
A short to ground in the wire
R6
PNK
Ignition key inserted into the
ignition switch
Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G504)
Faulty ignition key switch
An open in the wire
Ignition switch OFF and ignition
key removed from the ignition
switch
Measure the voltage to ground:
There should be more than 5 V.
Faulty ignition key switch
A short to ground in the wire
T23
WHT
Driver door lock knob switch
unlocked
Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty driver door lock knob switch
An open in the wire
Driver door lock knob switch
locked
Measure the voltage to ground:
There should be more than 5 V.
Faulty driver door lock knob switch
A short to ground in the wire
08/08/21 14:27:54 61SNR030_220_0208
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