ACURA CSX 2006 Service Repair Manual


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DTC B1129:
22-12422-124Keyless/Power Door Locks/Security System
DTC Troubleshooting (cont’d)
UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
LOCK (GRN)
UNLOCK (GRY)
12. Turn the ignition switch to LOCK (0).
13. Disconnect the power window master switch 22P
connector.
14. Disconnect under-dash fuse/relay box connector T (34P).
15. Check for continuity between under-dash fuse/relay box connector T (34P) terminals No. 28 (LOCK) and
No. 27 (UNLOCK).
Repair a short in the wire between the LOCK
and UNLOCK wires.
Substitute a known-good power window
master switch, and recheck. If the symptom/
indication goes away, replace the original power
window master switch. If not, the MICU is faulty,
replace the under-dash fuse/relay box (see page
22-66). NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Operate the driver’s door lock knob switch several times.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure. The system is OK at this
time.
5. Select KEYLESS from the BODY ELECTRICAL menu, and enter the DATA LIST.
6. Check the ON/OFF information of the DRIVER’S DOOR LOCK KNOB SWITCH (LOCK) and the
DRIVER’S DOOR LOCK KNOB SWITCH (UNLOCK).
Faulty MICU, replace the under-dash fuse/
relay box (see page 22-66).
Go to step 7.Driver’s Door Lock Knob Switch
Signal Error (LOCK/UNLOCK)
Wire side of female terminals
Is there continuity? I s DT C B1129 i nd i cat ed ?
Is the DRIV ER’S DOOR LOCK K NOB SW IT CH( LOCK ) i nf or mat i on i nd i cat or ON and t heDRIV ER’S DOOR LOCK K NOB SW IT CH(UNLOCK ) inf ormation indicator OFF with thedriver’s door lock knob switch in the LOCKposi t i on, and i s t he DRI V E R’ S DOOR LOCKK N OB SW I T CH ( LOCK ) i nf or mat i on i nd i cat orOF F and the DRIV ER’S DOOR LOCK K NOBSW IT CH (UNLOCK ) inf ormation indicator ONw i t h t he d r i v er ’ s d oor l ock k nob sw i t ch i n t heUNLOCK position?
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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?
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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.
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Keyless operation does not work (LOCK,
UNLOCK, PANIC)
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NO
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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?
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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?
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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 ?
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Doors automatically relock 30, 60, or 90
seconds after being unlocked with the
transmitter even though a door has been
opened
YES
NO
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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?
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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?
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22-131
MICU Input Test
UNDER-DASH FUSE/RELAY BOX CONNECTOR E (42P)
YEL GRY LT GRNBLK
BRNBLU
WHT WHT
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P) YEL
LT GRN BLK
BLK BLU
BLU GRN
LT BLU GRN
GRN
1. Before troubleshooting the keyless/power door locks/security system, troubleshoot the system using B-CAN System Diagnosis Test Mode A (see page 22-93).
2. Check the No. 10 (7.5 A) and No. 25 (20 A) fuses in the under-dash fuse/relay box. If any fuse is blown, replace it andgotostep3.
3. Disconnect under-dash fuse/relay box connectors E, F, G, M, N, Q, R, and T. NOTE: All connector views are shown from wire side of female terminals.
(cont’d)
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22-132Keyless/Power Door Locks/Security System
MICU Input Test (cont’d)
YEL
BLU UNDER-DASH FUSE/RELAY BOX
CONNECTOR N (14P)
PNK BLU YEL
UNDER-DASH FUSE/RELAY BOX
CONNECTOR M (10P)
GRN
UNDER-DASH FUSE/RELAY BOX
CONNECTOR T (34P)
LT BLU BLK
ORN
BRN
YEL
PUR
GRN
WHT
LT GRN PNKGRY
GRY
UNDER-DASH FUSE/RELAY BOX
CONNECTORR(20P)
UNDER-DASH FUSE/RELAY BOX
CONNECTOR Q (16P)
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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