2006 ACURA CSX ignition



µ
µ
µ
µ µ
µ
YES
NO
YES
NO YES
NO
22-125
UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
LOCK (LT GRN)
UNLOCK (WHT) UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
LOCK (LT GRN)
UNLOCK (WHT)
7. Disconnect the driver’s door lock actuator 10P
connector.
8. Check the ON/OFF information of the DRIVER’S DOOR LOCK KNOB SWITCH (LOCK) and DRIVER’S
DOOR LOCK KNOB SWITCH (UNLOCK) in the
DATA LIST.
Check for an open in the driver’s door lock
knob switch (LOCK) wire or the driver’s door lock
knob switch (UNLOCK) wire between the MICU and
the driver’s door lock knob switch. If OK, replace
the driver’s door lock actuator.
Go to step 9.
9. Turn the ignition switch to LOCK (0).
10. Disconnect under-dash fuse/relay box connector T (34P).
11. Check for continuity between under-dash fuse/relay box connector T (34P) terminals No. 23 (UNLOCK)
and No. 24 (LOCK) and body ground.
Repair a short to ground in the LOCK or
UNLOCK wire.
Go to step 12. 12. Check for continuity between under-dash fuse/relay
box connector T (34P) terminals No. 23 (UNLOCK)
and No. 24 (LOCK).
Repair a short in the wire between the LOCK
wire and UNLOCK wire.
Faulty MICU, replace the under-dash fuse/
relay box (see page 22-66).
Wire side of female terminals Wire side of female terminals
Ar e bot h i nf or mat i on i nd i cat or s OF F ?
Is there continuity? Is there continuity?
08/08/21 14:26:03 61SNR030_220_0127
ProCarManuals.com
DYNOMITE -2009-

(#')
Power Door Locks/Keyless
No.Symptom Check Items
22-126Keyless/Power Door Locks/Security System
Symptom Troubleshooting
1. If the door lock system works properly, but the keyless operation does not, refer to the immob
ilizer-keyless control
unit symptom troubleshooting information (see page 22- 321).
NOTE: The door lock system does not function when:  Any of the doors is open.
 Ignition key is in the ignition key switch.
 Ignition switch is ON (II).










1 The doors will not lock or unlock. MICU input test (see page 22-
131).
Driver’s door key cylinder switch test (see page 22-140).
Door lock switch test (see page 22-139).
Door lock knob switch test (see page 22-138).
2 The doors will not lock. MICU input test (see page 22- 131).
Door lock knob switch test (see page 22-138).
Driver’s door switch test (check the door switch ON/OFF
information with the HDS).
3 The doors will not unlock. MICU input test (see page 22- 131).
Door lock knob switch test (see page 22-138).
Door switch test (check the door switch ON/OFF
information with the HDS).
4 Keyless operation does not work (LOCK, UNLOCK, PANIC). Symptom troubleshooting (see page 22-127).
5 Doors will not unlock with the transmitter, but will unlock with the
door switch. Symptom troubleshooting (see page 22-129).
6 Doors will not lock with the transmitter, but will lock with the door switch. Symptom troubleshooting (see page 22-129).
7 Doors automatically relock after being unlocked with the transmitter even
though a door has been opened. Symptom troubleshooting (see page 22-130).
8 The horn does not sound when PANIC button on the transmitter pressed. Symptom troubleshooting (see page 22-129).
9 Keyless operation will work even though the ignition key is in the
ignition switch. Ignition key switch test (see page 22-207).
: If only one door is not working properly, check that door’s lock actuator first, then check the other items listed in this table.
08/08/21 14:26:03 61SNR030_220_0128
ProCarManuals.com
DYNOMITE -2009-



(#')
µ
µ
µ
µ µ
µ
µ
µ
Keyless operation does not work (LOCK,
UNLOCK, PANIC)
YES
NO
YES
NO YES
NO
YES
NO
22-127
IMMOBILIZER-KEYLESS CONTROL UNIT 7P CONNECTOR
VBU (WHT)
IGNITION KEY SWITCH 6P CONNECTOR GND
IG KEY SW
NOTE:
 Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first.
 Before troubleshooting, do the keyless transmitter test (see page 22-142).
1. Turn the ignition switch to ON (II).
2. Try to start the engine.
ThesystemisOK,gotostep3.
Go to the immobilizer symptom
troubleshooting (see page 22- 323).
3. Turn the ignition switch to LOCK (0).
4. Connect the HDS to the data link connector.
5. Close all doors, then turn the ignition switch to ON (II).
6. Enter the BODY ELECTRICAL menu, and check the door switch parameters.
Go to step 7.
Faulty door switch, or shorted door switch
wire. Repair as necessary.
7. Remove the ignition key from the ignition switch.
8. Disconnect the immobilizer-keyless control unit 7P connector. 9. Measure the voltage between immobilizer-keyless
control unit 7P connector terminal No. 1 and body
ground.
Go to step 10.
Check the fuse No. 23 (10 A) in the under-
hood fuse/relay box. If the fuse is blown, replace
the fuse and repair a short to ground in the wire. If
the fuse is OK, repair an open in the wire.
10. Disconnect the ignition key switch 6P connector.
11. At the ignition key switch side, check for continuity between ignition key switch 6P connector terminals
No. 1 and No. 2.
Faulty ignition key switch or short to ground,
replace the steering lock assembly (see page 17-14).
Go to step 12. (cont’d)
Wire side of female terminals
Terminal side of male terminals
Doestheenginestart? Do al l d oor sw i t ches i nd i cat e OF F ? Is there battery voltage?
Is there continuity?
08/08/21 14:26:03 61SNR030_220_0129
ProCarManuals.com
DYNOMITE -2009-



µ
µ
µ
µ µ
µ
YES
NO
YES
NO YES
NO
22-128Keyless/Power Door Locks/Security System
Symptom Troubleshooting (cont’d)
IGNITION KEY SWITCH 6P CONNECTOR
GND
IG KEY SW
IGNITION KEY SWITCH 6P CONNECTOR
IMMOBILIZER-KEYLESS CONTROL UNIT 7P CONNECTOR IG KEY SW (PNK)
IG KEY SW (PNK) IMMOBILIZER-KEYLESS CONTROL UNIT 7P CONNECTOR
IG KEY SW (PNK)
12. Insert the ignition key into the ignition switch.
13. At the ignition key switch side, check for continuitybetween ignition key switch 6P connector terminals
No. 1 and No. 2.
Go to step 14.
Faulty ignition key switch, replace the
steering lock assembly (see page 17-14).
14. Check for continuity between immobilizer-keyless control unit 7P connector terminal No. 6 and
ignition key switch 6P connector terminal No. 1.
Go to step 15.
Repair an open in the wire. 15. Check for continuity between immobilizer-keyless
control unit 7P connector terminal No. 6 and body
ground.
Repair a short to ground in the wire.
Replace the immobilizer-keyless control unit
(see page 22-332).
Terminal side of male terminals
Wire side of female terminalsWire side of female terminals Wire side of female terminals
Is there continuity?
Is there continuity? Is there continuity?
08/08/21 14:26:04 61SNR030_220_0130
ProCarManuals.com
DYNOMITE -2009-

(#')
(#')
µ
µ
µ
µ
µ
µ µ
µ
µ
µ
µ
µ
µ
µ
Doors will not unlock (or lock) with the
transmitter, but will unlock (lock) with the
door switch The horn does not sound and/or the
headlights do not flash when the PANIC
button on the transmitter is pressed
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
YES
NO
YES
NO
22-12922-129
NOTE: Before troubleshooting, check the B-CAN DTCs.
If any DTC is indicated, troubleshoot the indicated DTC
first.
1. Turn the ignition switch to LOCK (0).
2. Remove the ignition key from the ignition switch.
3. Close and lock the doors.
4. Try to lock/unlock the doors with the keyless transmitter.
Intermittent failure. The system is OK at this
time.
Go to step 5.
5. Open the driver’s door.
Faulty ignition key switch, or short to ground
on the ignition switch PNK wire. Repair as
necessary.
Go to step 6.
6. Do the transmitter test (see page 22-142).
Substitute a known-good MICU and
recheck.
Replace the transmitter (see page 22-142). NOTE: Before troubleshooting, check the B-CAN DTCs.
If any DTC is indicated, troubleshoot the indicated DTC
first.
1. Press the PANIC button.
Go to step 3.
Go to step 2.
2. Press the horn button.
Go to step 3.
Check the horn circuit.
3. Turn the headlight switch ON.
Go to step 4.
Check the lighting circuit.
4. Do the transmitter test (see page 22-142).
Substitute a known-good MICU and
recheck.
Replace the transmitter (see page 22-142).
Do t he d oor l ock act uat or s w or k nor mal l y ?
Does t he k ey -i n r emi nd er chi me sound ?
Is the transmitter OK ? Does t he hor n sound ?
Does t he hor n sound ?Do t he head l i ght s come on?Is the transmitter OK ?
08/08/21 14:26:04 61SNR030_220_0131
ProCarManuals.com
DYNOMITE -2009-

(#') (#'

)µ
µ
µ
µ
Doors automatically relock 30, 60, or 90
seconds after being unlocked with the
transmitter even though a door has been
opened
YES
NO
YES
NO
22-13022-130 Keyless/Power Door Locks/Security System
Symptom Troubleshooting (cont’d) Tripped Sensor History
1. Turn the ceiling light switch in DOOR position.
2. Turn the ignition switch to ON (II).
3. Close all doors.
4. Watch the ceiling light and the
door indicator on
the gauge control module.
Go to step 5.
Repair a short to ground in the wire between
the MICU and door switch.
5. Open and close each door one at a time.
6. Watch the ceiling light and the door indicator on
the gauge control module.
Substitute a known-good MICU and recheck.
If the symptom goes away, replace the original
MICU (see page 22-66).
Repair an open in the wire between the MICU
and the door switch. If the wire is OK, faulty the
door switch, replace the door lock actuator
assembly. The security system stores information on the last
tripped sensor if the security system has been violated.
The information can be retrieved using the HDS.
To retrieve the last tripped sensor data:
1. Select HISTORY DATA from the security system test mode menu.
2. Select CURRENT DATA.
3. Confirm that the VIN matches the Vehicle then press the enter button.
4. Scroll through the data list.  Sensors that were violated will indicate DETECT.
 Sensors that were not violated will indicateNONE.
5. Inspect the DETECT circuit for:  Misadjusted or damaged switch.
 Loose or corroded connections.
 Intermittent short to ground.
Do the ceiling light and door indicator go of f ?
Do the ceiling light and door indicator come onw hen t he d oor i s open, and go of f w hen t he d oor i sclosed?
08/08/21 14:26:04 61SNR030_220_0132
ProCarManuals.com
DYNOMITE -2009-

(#') (#'

)µ
µ
µ
µ
Doors automatically relock 30, 60, or 90
seconds after being unlocked with the
transmitter even though a door has been
opened
YES
NO
YES
NO
22-13022-130 Keyless/Power Door Locks/Security System
Symptom Troubleshooting (cont’d) Tripped Sensor History
1. Turn the ceiling light switch in DOOR position.
2. Turn the ignition switch to ON (II).
3. Close all doors.
4. Watch the ceiling light and the
door indicator on
the gauge control module.
Go to step 5.
Repair a short to ground in the wire between
the MICU and door switch.
5. Open and close each door one at a time.
6. Watch the ceiling light and the door indicator on
the gauge control module.
Substitute a known-good MICU and recheck.
If the symptom goes away, replace the original
MICU (see page 22-66).
Repair an open in the wire between the MICU
and the door switch. If the wire is OK, faulty the
door switch, replace the door lock actuator
assembly. The security system stores information on the last
tripped sensor if the security system has been violated.
The information can be retrieved using the HDS.
To retrieve the last tripped sensor data:
1. Select HISTORY DATA from the security system test mode menu.
2. Select CURRENT DATA.
3. Confirm that the VIN matches the Vehicle then press the enter button.
4. Scroll through the data list.  Sensors that were violated will indicate DETECT.
 Sensors that were not violated will indicateNONE.
5. Inspect the DETECT circuit for:  Misadjusted or damaged switch.
 Loose or corroded connections.
 Intermittent short to ground.
Do the ceiling light and door indicator go of f ?
Do the ceiling light and door indicator come onw hen t he d oor i s open, and go of f w hen t he d oor i sclosed?
08/08/21 14:26:04 61SNR030_220_0132
ProCarManuals.com
DYNOMITE -2009-

Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
22-135
































Q4 GRN Under all
conditions Measure the voltage to ground:
There should be less than 1 V. An open in the wire
Faulty audio unit or navigation
unit.
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 to
LOCK (0) 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
T22 LT BLUFront passenger’s
door lock knob
switch unlocked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G504)
Faulty front passenger’s door
lock knob switch
An open in the wire
Front passenger’s
door lock knob
switch locked Measure the voltage to ground:
There should be more than 5 V.
Faulty front passenger’s door
lock knob switch
A short to ground in the wire
T23 WHT Driver’s door lock knob switch
unlocked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G501)
Faulty driver’s door lock knob
switch
An open in the wire
Driver’s door lock
knob switch locked Measure the voltage to ground:
There should be more than 5 V. Faulty driver’s door lock knob
switch
A short to ground in the wire
T24 LT GRNDriver’s door lock
knob switch
unlocked Measure the voltage to ground:
There should be more than 5 V.
Faulty driver’s door lock knob
switch
A short to ground in the wire
Driver’s door lock
knob switch locked Measure the voltage to ground:
There should be less than 1 V. Poor ground (G501)
Faulty driver’s door lock knob
switch
An open in the wire
T25 GRY Left rear door lock knob switch
unlocked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G602)
Faulty left rear door lock knob
switch
An open in the wire
Left rear door lock
knob switch locked Measure the voltage to ground:
There should be more than 5 V. Faulty left rear door lock knob
switch
A short to ground in the wire
T26 PNK Right rear door lock knob switch
unlocked Measure the voltage to ground:
There should be less than 1 V.
Poor ground (G602)
Faulty right rear door lock knob
switch
An open in the wire
Right rear door
lock knob switch
locked Measure the voltage to ground:
There should be more than 5 V.
Faulty right rear door lock knob
switch
A short to ground in the wire
(cont’d)
08/08/21 14:26:05 61SNR030_220_0137
ProCarManuals.com
DYNOMITE -2009-