2006 ACURA CSX keyless

Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
22-136Keyless/Power Door Locks/Security System
MICU Input Test (cont’d)






























T27 GRY Driver door lock
switch unlocked Measure the voltage to ground:
There should be less than 1 V. Poor ground (G503)
Faulty driver door lock switch
An open in the wire
Driver door lock
switch in neutral or
locked Measure the voltage to ground:
There should be more than 5 V.
Faulty driver door lock switch
A short to ground in the wire
T28 GRN Driver door lock switch locked Measure the voltage to ground:
There should be less than 1 V. Poor ground (G503)
Faulty driver door lock switch
An open in the wire
Driver door lock
switch in neutral or
unlocked Measure the voltage to ground:
There should be more than 5 V.
Faulty driver door lock switch
A short to ground in the wire
T29 PUR Front passenger’s door lock switch
unlocked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G504)
Faulty front passenger’s door
lock switch
An open in the wire
Front passenger’s
door lock switch in
neutral or locked Measure the voltage to ground:
There should be more than 5 V.
Faulty front passenger’s door
lock switch
A short to ground in the wire
T30 YEL Front passenger’s door lock switch
locked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G504)
Faulty front passenger’s door
lock switch
An open in the wire
Front passenger’s
door lock switch in
neutral or
unlocked Measure the voltage to ground:
There should be more than 5 V.
Faulty front passenger’s door
lock switch
A short to ground in the wire
T31 BRN Driver door key cylinder switch
unlocked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty driver door key cylinder
switch
An open in the wire
Driver door key
cylinder switch in
neutral or locked Measure the voltage to ground:
There should be more than 5 V.
Faulty driver door key cylinder
switch
A short to ground in the wire
T32 ORN Driver door key cylinder switch
locked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty driver door key cylinder
switch
An open in the wire
Driver door key
cylinder switch in
neutral or
unlocked Measure the voltage to ground:
There should be more than 5 V.
Faulty driver door key cylinder
switch
A short to ground in the wire
08/08/21 14:26:05 61SNR030_220_0138
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Driver’s Door Passenger’s Door
22-138Keyless/Power Door Locks/Security System
Door Lock Knob Switch Test
A
B
Left rear door
AB
Front passenger’s door,
Right rear door
1. Remove the driver’s door panel (see page 20-7).
2. Disconnect the 10P connector (A) from the actuator
(B).
3. Check for continuity between the terminals.  There should be continuity between terminalsNo. 6 and No. 5 when the door lock knob switch
is in the LOCK position and no continuity when
the switch is in the UNLOCK position.
 There should be continuity between terminals No. 7 and No. 5 when the door lock knob switch
is in the UNLOCK position and no continuity
when the switch is in the LOCK position.
4. If the continuity is not as specified, replace the door lock actuator. 1. Remove the passenger’s door panel (see page
20-7).
2. Disconnect the 10P connector (A) from the actuator (B).
3. Check for continuity between the terminals. There should be continuity between terminals
No. 8 No. 7 and No. 10 No. 5 when the
door lock knob switch in the UNLOCK position and
no continuity when the switch is in the LOCK
position. : Left rear door
4. If the continuity is not specified, replace the door lock actuator.
08/08/21 14:26:06 61SNR030_220_0140
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22-140Keyless/Power Door Locks/Security System
Door Key Cylinder Switch Test
A
B
1. Remove the driver’s door panel (see page 20-7).
2. Disconnect the 10P connector (A) from the key
cylinder switch (B).
3. Check for continuity between the terminals.  There should be continuity between terminalsNo. 9 and No. 5 when the door key cylinder
switch is in LOCK position. (With security)
 There should be no continuity between terminals No. 9 and No. 5 when the door key cylinder
switch is in the neutral or UNLOCK position.
(With security)
 There should be continuity between terminals No. 8 and No. 5 when the door key cylinder
switch is in UNLOCK position.
 There should be no continuity between terminals No. 8 and No. 5 when the door key cylinder
switch is in the neutral or LOCK position.
4. If the continuity is not as specified, replace the door key cylinder assembly (see page 20-9).
08/08/21 14:26:06 61SNR030_220_0142
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With HDS
22-142 Keyless/Power Door Locks/Security System
Transmitter Test/Replacement
A
NOTE:
 If the doors unlock or lock with the transmitter, but the LED on the transmitter does not come on, the LED
is faulty; replace the transmitter.
 If any door is open, you cannot lock the doors with the transmitter.
 If you unlocked the doors with the transmitter, but do not open any of the doors within 30 seconds, the
doors relock automatically.
 The doors do not lock or unlock with the transmitter if the ignition key is inserted in the ignition switch.
1. Press the lock or unlock button five or six times to reset the transmitter.
 If the locks work, the transmitter is OK.
 If any of the transmitter buttons do not work, replace the transmitter, then do the transmitter
programming registration (see page 22-329).
 If the locks don’t work, go to step 2.
2. Connect the HDS to the data link connector.
3. Select the KEYLESS from the BODY ELECTRICAL menu, then enter the KEYLESS CHECK.
4. Press lock, unlock, trunk, or panic button and check the response on the screen of the HDS.
NOTE: The door lock actuators may or may not
cycle when receiving input from the transmitter.
 If KEYLESS ENTRY TRANSMITTER CODE IS RECEIVED is indicated, the transmitter is OK. Go
to keyless operation troubleshooting (see page
22-127).
 If DIFFERENT KEYLESS ENTRY TRANSMITTER CODE IS RECEIVED is indicated, the transmitter is
not registered to the vehicle, if necessary,
reprogram and register the transmitter (see page
22-329).
 If KEYLESS ENTRY TRANSMITTER CODE IS NOT RECEIVED is indicated, go to step 5. 5. Open the transmitter and check for water damage.
 If you find any water damage, replace thetransmitter, then reprogram and register the
transmitter (see page 22-329).
 If there is no water damage, go to step 6.
6. Replace the transmitter battery (A) with a new one, and press lock or unlock button and check the
receive condition on the screen of the HDS.
 If KEYLESS ENTRY TRANSMITTER CODE IS RECEIVED is indicated, the transmitter is OK.
 If KEYLESS ENTRY TRANSMITTER CODE IS NOT RECEIVED is indicated, go to step 7.
08/08/21 14:26:07 61SNR030_220_0144
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Without HDS
22-143
7. Use a different known-good keyless transmitterand repeat steps 3 and 4.
NOTE: The keyless transmitter does not need to be
programmed to the vehicle for this test.
 If (DIFFERENT) KEYLESS ENTRY TRANSMITTER CODE IS RECEIVED is indicated, replace the
keyless transmitter and do the immobilizer
system registration (see page 22-329).
 If KEYLESS ENTRY TRANSMITTER CODE IS NOT RECEIVED is indicated, the immobilizer-keyless
control unit is faulty, replace it and do the
immobilizer system registration (see page
22-329).
NOTE: As the keyless transmitter is combined with
the immobilizer transponder, when the
transponder is registered by the HDS, the keyless
transmitter programming is completed
automatically. 1. Start the engine.
 If the engine does not start, go to the immobilizersymptom troubleshooting (see page 22-323).
 If the engine starts, go to step 2.
2. Press the lock or unlock button five or six times to reset the transmitter.
 If the locks work, the transmitter is OK.
 If the locks don’t work, go to step 3.
3. Open the transmitter and check for water damage.  If you find any water damage, replace thetransmitter.
 If there is no water damage, go to step 4.
(cont’d)
08/08/21 14:26:07 61SNR030_220_0145
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22-144Keyless/Power Door Locks/Security System
Transmitter Test/Replacement (cont’d)
A
4. Replace the transmitter battery (A) with a new one,
and try to lock and unlock the doors with the
transmitter by pressing the lock or unlock button
five or six times.
 If the doors lock and unlock, the transmitter is OK.
 If the doors don’t lock and unlock, go to step 5.
5. Reprogram and register the transmitter (see page 22-329), then try to lock and unlock the doors.
 If the doors lock and unlock, the transmitter is OK.
 If the doors don’t lock and unlock, substitute a known-good transmitter and recheck (see page
22-329). If still not operating, replace the
immobilizer-keyless control unit.
08/08/21 14:26:07 61SNR030_220_0146
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µ
µ
22-203
Circuit Diagram
5 6
R13
ORN
LT BLU
BLK5
7
G501 LOCK
WHT
T23
BRN T24
LT GRN
6
4
UNDER-DASH FUSE/RELAY BOX 7*2
1*1 8*1
9*2K5
G3 D2
PG
SG
PNKR16
G501 BLK
T34
BLK
G401 F20
E2
GRY
LT BLU LT BLU
CEILING LIGHT BLU
PNK FRONT
INDIVIDUAL
MAP LIGHTS
PNKDOOR
IG1Q6
B-CAN
No. 22 (7.5 A)
No. 2 (IG) (50 A)
No. 1 (BAT) (100 A)
OFFUNDER-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
G504BLKPNK
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
1 111 :CANline
*1: ’06 07 models
*2: ’08 09 models
TRANSMITTER
08/08/21 14:27:54 61SNR030_220_0205
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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
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