fuse box ACURA CSX 2006 Service Repair Manual


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DTC B1026:
YES
NO
YES
NO YES
NO
YES
NO
22-120Keyless/Power Door Locks/Security System
DTC Troubleshooting
FRONT PASSENGER’S POWER
WINDOW SWITCH 8P CONNECTOR
LOCK (YEL)
UNLOCK (PUR)
Front Passenger’s Door Lock
Switch Signal Error
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 front passenger’s door lock switch several times.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure. The front passenger’s
door lock system is OK at this time.
5. With the front passenger’s door lock switch in the neutral position, select KEYLESS from the HDS and
enter the DATA LIST.
6. Check the ON/OFF information of the FRONT PASSENGER’S DOOR LOCK SWITCH (LOCK) and
FRONT PASSENGER’S DOOR LOCK SWITCH
(UNLOCK) in the DATA LIST.
Go to step 12.
Go to step 7. 7. Disconnect the front passenger’s power window
switch 8P connector.
8. Check the ON/OFF information of the FRONT PASSENGER’S DOOR LOCK SWITCH (LOCK) and
FRONT PASSENGER’S DOOR LOCK SWITCH
(UNLOCK) in the DATA LIST.
Faulty door lock switch; replace the front
passenger’s power window switch (see page
22-220).
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 front passenger’s power window switch 8P connector terminals No. 1
(LOCK) and No. 6 (UNLOCK) and body ground.
Repair a short in the LOCK or UNLOCK
wire.
Faulty MICU, replace the under-dash fuse/
relay box (see page 22-66).
Wire side of female terminals
Is DTC B1026 indicated?
Ar e bot h i nf or mat i on i nd i cat or s OF F ? Ar e bot h i nf or mat i on i nd i cat or s OF F ?
Is there continuity?
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YES
NO
YES
NO
YES
NO
YES
NO
DTC B1127:
22-12122-121
FRONT PASSENGER’S POWER
WINDOW SWITCH 8P CONNECTOR
LOCK (YEL)
UNLOCK (PUR)
12. Turn the ignition switch to LOCK (0).
13. Disconnect the front passenger’s window switch 8Pconnector.
14. Disconnect under-dash fuse/relay box connector T (34P).
15. Check for continuity between front passenger’s power window switch 8P connector terminals No. 1
(LOCK) and No. 6 (UNLOCK).
Repair a short in the wire between the LOCK
and UNLOCK wires.
Substitute a known-good front passenger’s
power window switch, and recheck. If the
symptom/indication goes away, replace the
original front passenger’s power window 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. Insert the ignition key into the driver’s door key cylinder switch, and turn the key in LOCK and
UNLOCK positions ten times.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure. The driver’s door key
cylinder switch system is OK at this time.
5. With the driver’s door key cylinder in the neutral position, select KEYLESS with the HDS, and enter
the DATA LIST.
6. Check the ON/OFF information of the DRIVER’S DOOR KEY CYLINDER SWITCH (LOCK) and
DRIVER’S DOOR KEY CYLINDER SWITCH
(UNLOCK) in the DATA LIST.
Go to step 12.
Go to step 7.
7. Disconnect the driver’s door lock actuator 10P connector.
8. Check the ON/OFF information of the DRIVER’S DOOR KEY CYLINDER SWITCH (LOCK) and
DRIVER’S DOOR KEY CYLINDER SWITCH
(UNLOCK) in the DATA LIST.
Faulty driver’s door key cylinder switch;
replace the driver’s door lock actuator.
Go to step 9. (cont’d)Driver’s Door Key Cylinder
Switch Signal Error
Wire side of female terminals
Is there continuity? I s DT C B1127 i nd i cat ed ?
Ar e bot h i nf or mat i on i nd i cat or s OF F ?Ar e bot h i nf or mat i on i nd i cat or s OF F ?
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YES
NO YES
NO
22-122Keyless/Power Door Locks/Security System
DTC Troubleshooting (cont’d)
UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
LOCK
(ORN)
UNLOCK (BRN) UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
LOCK
(ORN)
UNLOCK (BRN)
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. 31 (UNLOCK)
and No. 32 (LOCK) and body ground.
Faulty MICU, replace the under-dash fuse/
relay box (see page 22-66).
Go to step 12.
12. Turn the ignition switch to LOCK (0).
13. Disconnect the driver’s door lock actuator 10P 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. 31 (UNLOCK)
and No. 32 (LOCK).
Repair a short in the wire between the LOCK
and UNLOCK wires.
Substitute a known-good MICU, and recheck.
If the symptom/indication goes away, replace the
original MICU, if not, replace the driver’s door lock
actuator.
Wire side of female terminals Wire side of female terminals
Is there continuity?
Is there continuity?
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DTC B1128:
YES
NO
YES
NO YES
NO
YES
NO
22-123
UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
LOCK (GRN)
UNLOCK (GRY)
Driver’s Door Lock Switch Signal
Error (LOCK/UNLOCK)
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 switch LOCK/ UNLOCK several times.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure. The driver’s door lock
system is OK at this time.
5. With the driver’s door lock switch in the neutral position, select KEYLESS from the HDS and enter
the DATA LIST.
6. Check the ON/OFF information of the DRIVER’S DOOR LOCK SWITCH (LOCK) and DRIVER’S DOOR
LOCK SWITCH (UNLOCK) in the DATA LIST.
Go to step 12.
Go to step 7.
7. Disconnect the driver’s power window master switch 22P connector. 8. Check the ON/OFF information of the DRIVER’S
DOOR LOCK SWITCH (LOCK) and DRIVER’S DOOR
LOCK SWITCH (UNLOCK) in the DATA LIST.
Faulty door lock switch; replace the driver’s
power window master switch (see page 22-219).
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. 28 (LOCK) and
No. 27 (UNLOCK) and body ground.
Repair a short in the LOCK or UNLOCK
wire.
Faulty MICU, replace the under-dash fuse/
relay box (see page 22-66).
(cont’d)
Wire side of female terminals
I s DT C B1128 i nd i cat ed ?Ar e bot h i nf or mat i on i nd i cat or s OF F ? Ar e bot h i nf or mat i on i nd i cat or s OF F ?
Is there continuity?
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YES
NO
YES
NO
YES
NO
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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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?
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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?
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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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Î
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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Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
22-133
5. With the connector still disconnected, 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, go to step 6.



















G16 WHT Under all
conditions Measure the voltage to ground:
There should be battery voltage. Blown No. 12 (15 A) fuse in the
under-hood fuse/relay box
An open in the wire
G18 WHT Under all conditions Measure the voltage to ground:
There should be battery voltage. Blown No. 4 (50 A) fuse in the
under-hood fuse/relay box
An open in the wire
G7 LT GRNUnder all
conditions Connect terminals G16 and G7
with a jumper wire
momentarily:
The horn should sound. Poor ground (body ground)
Blown No. 12 (15 A) fuse in the
under-hood fuse/relay box
Faulty horn
An open in the wire
E20 GRN Under all conditions Connect terminals G2 and E20
with a jumper wire:
The trunk release actuator
should work (Trunk lid should
open). Poor ground (G701)
Faulty trunk release actuator
An open in the wire
N7 BLU Under all conditions Connect battery power to
terminal N13 and ground
terminal N7 momentarily:
The driver’s door lock actuator
should unlock. Faulty driver’s door lock
actuator
An open in the wire
N13 YEL
M8 YEL Under all conditions Connect battery power to
terminal M8 and ground
terminal M10 momentarily:
The front passenger’s door lock
actuator should unlock. Faulty front passenger’s door
lock actuator
An open in the wire
M10 BLU
E1 YEL Under all conditions Connect battery power to
terminal E1 and ground
terminal E21 momentarily:
The right rear door lock actuator
should unlock. Faulty right rear door lock
actuator
An open in the wire
E21 BLU
E14 YEL Under all
conditions Connect battery power to
terminal E14 and ground
terminal E31 momentarily:
The left rear door lock actuator
should unlock. Faulty left rear door lock
actuator
An open in the wire
E31 BLU
(cont’d)
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