2006 ACURA CSX brake light

´µ

The Indicator Drive Circuit Check
Switch Input Check
The Beeper Drive Circuit Check
The LCD Segment Check
The Gauge Drive Circuit Check
22-242Gauges
Self-diagnostic Function (cont’d)
OFF ON
OFF ON
OFF ON
OFF ON
Gauge needles
Beeper
5sec.
Self-diagnostic
mode
SEL/RESET
SWITCH
When entering the self-diagnostic mode, the following indicators blink:
A/T gear position indicator, ABS indicator, brake system indicator, charging system indicator, cruise control indicator,
cruise main indicator, door indicator, DRL indicator, EPS indicator, fog light indicator , high beam indicator,
immobilizer indicator, lights-on indicator, low fuel indicator, low oil pressure indicator, low tire pressure indicator ,
maintenance minder indicator, malfunction indicator lamp (MIL), REV limit indicator (TYPE S model), seat belt
reminder indicator, security indicator, side airbag cutoff indicator, SRS indicator, TPMS indicator , trunk indicator,
VSA activation indicator , VSA indicator , and washer fluid level indicator.
1: ’07 TYPE S and ’08-09 models
2: ’08-09 models
3: TYPE S and ’08 Premium and ’09 models
At the initial stage of the self-diagnostic function, the beep sounds intermittently, the beeper sounds continuously
when any of the following switch inputs are switched from OFF to ON:
Cruise control main, dash lights brightness controller volume ( ), ( ) button, mph km/h switch, parking brake switch,
SEL/RESET switch, SET, RESUME, CANCEL switches, and VSA OFF switch . : ’07 TYPE S and ’08-09 models
When entering the self-diagnostic mode, the beeper sounds five times.
When entering the self-diagnostic mode, all the segments blink five times.
When entering the self-diagnostic mode, the tachometer needle sweeps from the minimum position to maximum
position, then returns to the minimum position.
NOTE:
After the beeper stops sounding and the gauge needle returns to the minimum position, pushing the SEL/RESET
switch starts the Beeper Drive Circuit Check (one beep) and the Gauge Drive Circuit Check again.
The check cannot be started again until the gauge needle returns to the minimum position.
If the needle fails to sweep, or the beeper does not sound, replace the gauge control module (tach).
3 2
2
11
The needle sweeps from the
minimum position to the
maximum position, then return
to the minimum position.
08/08/21 14:35:12 61SNR030_220_0244
ProCarManuals.com
DYNOMITE -2009-

Î(#'
)
Except TYPE S model
22-244Gauges
Circuit Diagram - Gauge Control Module (Tach)
UART
WHT
IG1 HOT in ON (II) and START (III)
UNDER-HOOD FUSE/RELAY BOX
5V



MAIN CIRCUIT
MAIN CIRCUIT
MICU
  LT GRN
20
21
PNK
124
CAN L
CAN H 

 CHIME
BRN
WHT BRN
RED 19
1
WHT No. 2 (IG) (50 A)
GAUGE CONTROL MODULE (TACH) 18 17 TACHOMETER ORN
IG1
BAT
BLU
WHT
No. 23 (10 A)
BATTERY
IGNITION SWITCH
No. 1 (BAT) (100 A)
(7.5 A) No. 10UNDER-DASH
FUSE/RELAY
BOX
GAUGE CONTROL
MODULE (SPEEDO)
DRIVE
CIRCUIT DIMMING
CIRCUIT
PARKING
BRAKE
REMINDER
SEAT
BELT
REMINDER
KEY-IN
REMINDER
F-CAN
TRANSCEIVER B-CAN
TRANSCEIVER
IMMOBILIZER-
KEYLESS
CONTROL UNIT GAUGE
CONTROL
MODULE
(SPEEDO) 10 V
STABILIZING
CIRCUIT
HIGH BEAM
INDICATOR
(LED)
LIGHTS-ON
REMINDER
CLIMATE CONTROL
UNIT
HANDSFREELINK
CONTROL UNIT*3 IMMOBILIZER
INDICATOR
(LED)
ON/OFF
5V
5V
CONTROL
CIRCUIT
H1
D4 G2D2
Q1 P5 P10 Q9
A
ECM/PCM
ABS MODULATOR-
CONTROL UNIT*1
VSA MODULATOR-
CONTROL UNIT*2
YAW RATE-LATERAL
ACCELERATION SENSOR*2
EPS CONTROL UNIT
TPMS CONTROL UNIT*2
DATA LINK CONNECTOR
SRS UNIT







 MICU
08/08/21 14:35:12 61SNR030_220_0246
ProCarManuals.com
DYNOMITE -2009-

Î
µ
22-249
B
28
LT GRN
MAIN CIRCUIT
INDICATOR DRIVE CIRCUIT
TRUNK
INDICATOR
(LED)
LOW OIL
PRESSURE
INDICATOR
(LED)
PARKING
BRAKE
SWITCH
(Closed:
Lever pulled)LIGHTS-ON
INDICATOR
(LED)
LIGHTS-ON/FOG LIGHT
INDICATOR DIMMING CIRCUIT
DOOR
INDICATOR
(LED)
1FOG LIGHT
INDICATOR
(LED)
BRAKE
SYSTEM
INDICATOR
(LED) *: ’08 09 models
GRN BLK
G401 1 2
ORN 27
BRAKE FLUID
LEVEL SWITCH
(Closed:
Float down)
(Open:
Float up) ORN
CHARGING
SYSTEM
INDICATOR
(LED)
GAUGE CONTROL MODULE (TACH)
08/08/21 14:35:14 61SNR030_220_0251
ProCarManuals.com
DYNOMITE -2009-

Î(#'
)
TYPE S model
22-250Gauges
Circuit Diagram - Gauge Control Module (Tach) (cont’d)
UART
WHT
IG1 HOT in ON (II) and START (III)
UNDER-HOOD FUSE/RELAY BOX









 ECM
VSA MODULATOR-
CONTROL UNIT
YAW RATE-LATERAL
ACCELERATION SENSOR
EPS CONTROL UNIT
TPMS CONTROL UNIT*1
DATA LINK CONNECTOR
SRS UNIT MAIN CIRCUIT
MAIN CIRCUIT
MICU
  GRY
2
21
PNK
124
CAN L
CAN H 

 CHIME
BRN
WHT BRN
RED 19
1
WHT No. 2 (IG) (50 A)
GAUGE CONTROL MODULE (TACH) 18 17 TACHOMETER ORN
IG1
BAT
BLU
WHT
No. 23 (10 A)
BATTERY
IGNITION SWITCH
No. 1 (BAT) (100 A)
(7.5 A) No. 10UNDER-DASH
FUSE/RELAY
BOX
GAUGE CONTROL
MODULE (SPEEDO)
DRIVE
CIRCUIT DIMMING
CIRCUIT
PARKING
BRAKE
REMINDER
SEAT
BELT
REMINDER
KEY-IN
REMINDER
F-CAN
TRANSCEIVER B-CAN
TRANSCEIVER
IMMOBILIZER-
KEYLESS
CONTROL UNIT GAUGE
CONTROL
MODULE
(SPEEDO) 10 V
STABILIZING
CIRCUIT
HIGH BEAM
INDICATOR
(LED)
LIGHTS-ON
REMINDER
CLIMATE CONTROL
UNIT
HANDSFREELINK
CONTROL UNIT*2 IMMOBILIZER
INDICATOR
(LED)
H1
D4 G2D2
Q1 P5 P10 Q9
A DRIVER DRIVERMAIN CIRCUIT
MICU
08/08/21 14:35:15 61SNR030_220_0252
ProCarManuals.com
DYNOMITE -2009-

Î
µ
22-255
B
28
LT GRN
MAIN CIRCUIT
INDICATOR DRIVE CIRCUIT
SEAT BELT
REMINDER
INDICATOR
(LED)
LOW OIL
PRESSURE
INDICATOR
(LED)
PARKING
BRAKE
SWITCH
(Closed:
Lever pulled)LIGHTS-ON
INDICATOR
(LED)
1 FOG LIGHT
INDICATOR
(LED)
BRAKE
SYSTEM
INDICATOR
(LED) *: ’08 09 models
GRN BLK
G401 1 2
ORN 27
BRAKE FLUID
LEVEL SWITCH
(Closed:
Float down)
(Open:
Float up) ORN
CHARGING
SYSTEM
INDICATOR
(LED)
GAUGE CONTROL MODULE (TACH)
LIGHTS-ON/FOG LIGHT INDICATOR
DIMMING CIRCUIT
08/08/21 14:35:17 61SNR030_220_0257
ProCarManuals.com
DYNOMITE -2009-

´
´
Cavity Wire Test condition Test: Desired result Possible cause if desired result
is not obtained
22-273





























5 YEL Ignition switch ON
(II), ILLUMI ( )
button pressed Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty dash light brightness
controller and odometer
select/reset switch
An open in the wire
Ignition switch ON
(II), ILLUMI ( )
button released Measure the voltage to ground:
There should be more than 5 V.
Faulty dash light brightness
controller and odometer
select/reset switch
A short to ground in the wire
6 BLU Ignition switch ON (II), SELECT/RESET
button pressed Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty dash light brightness
controller and odometer
select/reset switch
An open in the wire
Ignition switch ON
(II), SELECT/RESET
button released Measure the voltage to ground:
There should be more than 5 V.
Faulty dash light brightness
controller and odometer
select/reset switch
A short to ground in the wire
7 PUR Ignition switch ON (II), km/h-mph
button pressed Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty dash light brightness
controller and odometer
select/reset switch
An open in the wire
Ignition switch ON
(II), km/h-mph
button released Measure the voltage to ground:
There should be more than 5 V.
Faulty dash light brightness
controller and odometer
select/reset switch
A short to ground in the wire
8 BLU Ignition switch ON (II), washer fluid is
half or more in the
washer reservoir Measure the voltage to ground:
There should be more than 5 V.
Faulty washer fluid level
switch
A short to ground in the wire
Ignition switch ON
(II), washer fluid is
empty in the
washer reservoir Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G401)
Faulty washer fluid level
switch
An open in the wire
27 GRN Ignition switch ON (II), brake fluid is
full level in the
reservoir Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G401)
Faulty brake fluid level switch
An open in the wire
Ignition switch ON
(II), brake fluid is
lower level in the
reservoir Measure the voltage to ground:
There should be more than 5 V.
Faulty brake fluid level switch
A short to ground in the wire
28 LT GRNIgnition switch ON
(II), parking brake
lever pulled Measure the voltage to ground:
There should be less than 1 V.
Faulty parking brake switch
An open in the wire
Ignition switch ON
(II), parking brake
lever released Measure the voltage to ground:
There should be more than 5 V.
Faulty parking brake switch
A short to ground in the wire
08/08/21 14:35:58 61SNR030_220_0275
ProCarManuals.com
DYNOMITE -2009-

Î
Î(#'

)
22-281
Reminder Systems
Component Location Index
GAUGE CONTROL MODULE (TACH)
MICU COMBINATION LIGHT SWITCH
IGNITION KEY SWITCH PARKING BRAKE SWITCH SRS UNIT
DRIVER’S DOOR SWITCH FRONT SEAT BELT
BUCKLE SWITCHES
Input Test, page 22-271
Input Test, page 22-284 Test/Replacement, page 22-166
Test, page 22-72 Test, page 19-11
08/08/21 14:36:01 61SNR030_220_0283
ProCarManuals.com
DYNOMITE -2009-

Î
(#'

)
µµ
µ
22-282 Reminder Systems
Circuit Diagram


MICU







 ORN
(10 A) No. 23
BLK1 2
SRS UNIT
G602
B11
A12
A11 YEL
WHT REDRED
WHT
ORN28
LT GRN BLK16
G504
INDICATOR DRIVE CIRCUIT
MICU
  ECM/PCM MAIN CIRCUIT
21
PNK
124
CAN L
CAN H


 CHIME
WHT
BRN
RED 19
1
WHT No. 2 (IG) (50 A)
GAUGE CONTROL MODULE (TACH) 18
17
IG1
BAT
BLU
WHT
UNDER-HOOD FUSE/RELAY BOX
BATTERY IGNITION SWITCH
No. 1 (BAT) (100 A)
(7.5 A) No. 10UNDER-DASH
FUSE/RELAY
BOX
DRIVE
CIRCUIT
PARKING
BRAKE
REMINDER
SEAT
BELT
REMINDER
KEY-IN
REMINDER
F-CAN
TRANSCEIVER B-CAN
TRANSCEIVERLIGHTS-ON
INDICATOR
(LED)
IG1 HOT in ON (II)
and START (III)
ABS MODULATOR-
CONTROL UNIT*1 LIGHTS-ON INDICATOR
DIMMING CIRCUIT
PARKING
BRAKE
SWITCH
(Closed:
Lever pulled)
DRIVER’S
SEAT BELT
BUCKLE
SWITCH
(Closed:
unbuckled) SEAT BELT
REMINDER
INDICATOR
(LED)
BRAKE
SYSTEM
INDICATOR
(LED)COMPULSORY
TURNING-ON
CIRCUIT
LIGHTS-ON
REMINDER
CLIMATE
CONTROL
UNIT
IMMOBILIZER-
KEYLESS
CONTROL UNIT
HANDSFREELINK
CONTROL UNIT*4
H1
D4 D2
Q1 Q9
G2 :CANline
1
VSA MODULATOR-
CONTROL UNIT*2
YAW RATE-LATERAL
ACCELERATION SENSOR*2
DATA LINK CONNECTOR
EPS CONTROL UNIT
TPMS CONTROL UNIT*3 10 V
STABILIZING
CIRCUIT
*1: ’06 07 Touring and Premium models
*2: ’07 TYPE S and ’08 09 models
*3: ’08 09 models
*4: ’09 model with navigation system
MICU
A
B
08/08/21 14:36:02 61SNR030_220_0284
ProCarManuals.com
DYNOMITE -2009-