Honda Accord 2008 Manual page 2187

07/11/02 09:31:59 61TA0000_220_0157
Keyless/Power Door Locks/Security System
DTC Troubleshooting
DTC B1127: Driver's Door Key Cylinder
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 22-120).
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 to the LOCK and
UNLOCK positions 10 times.
4. Check for DTCs with the HDS.
Is DT C B1127 indicated?
−
YES Go to step 5.
NO − 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.
Are both inf ormation indicators OF F ?
YES − Go to step 12.
−
NO 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.
Are both inf ormation indicators OF F ?
−
YES Faulty driver's door key cylinder switch;
replace the driver's door lock actuator.
NO − Go to step 9.
22-154
9. Turn the ignition switch to LOCK (0).
10. Disconnect the door multiplex control unit 37P
connector.
11. Check for continuity between body ground and the
door multiplex control unit 37P connector No. 28
and No. 29 terminals.
DOOR MULTIPLEX CONTROL UNIT 37P CONNECTOR
LOCK (ORN) UNLOCK (BRN)
Wire side of female terminals
Is there continuity?
YES − Repair a short to ground in the LOCK and
UNLOCK wire.
NO − Replace the power window master switch
(see page 22-283).
12. Turn the ignition switch to LOCK (0).
13. Disconnect the driver's door lock actuator 10P
connector.
14. Disconnect the door multiplex control unit 37P
connector.
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