Honda Accord 2008 Manual page 2299

07/11/02 09:38:44 61TA0000_220_0269
Power Windows
DTC Troubleshooting (cont'd)
DTC B1142:
Communication Error
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-120).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back
to ON (II).
3. Open and close the driver's and front passenger's
windows by operating the power window master
switch.
4. Check for DTCs with the HDS.
Is DT C B1142 indicated?
YES
NO −
time.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the door multiplex control unit 37P
connector.
7. Disconnect the front passenger's power window
switch 37P connector.
8. Check for continuity between the door multiplex
control unit 37P connector No. 27 terminal and
body ground.
＊０１
DOOR MULTIPLEX CONTROL UNIT 37P CONNECTOR
Is there continuity?
YES
NO −
22-266
Communication Line (UART Line)
−
Go to step 5.
Intermittent failure, the system is OK at this
UART (BLU)
Wire side of female terminals
− Repair a short to ground in the wire.
Go to step 9.
9. Check for continuity between the door multiplex
control unit 37P connector No. 27 terminal and the
front passenger's power window switch 37P
connector No. 29 terminal.
DOOR MULTIPLEX CONTROL UNIT 37P CONNECTOR
Wire side of female terminals
UART (BUL)
UART (BUL)
FRONT PASSENGER'S POWER WINDOW SWITCH
37P CONNECTOR
Wire side of female terminals
Is there continuity?
−
YES Go to step 10.
NO − Repair an open in the wire.
10. Turn the ignition switch to ON (II).
11. Measure the voltage between the door multiplex
control unit 37P connector No. 27 terminal and
body ground.
DOOR MULTIPLEX CONTROL UNIT 37P CONNECTOR
UART (BLU)
Wire side of female terminals
Is there less than 1 V ?
−
YES Go to the passenger's power window switch
input test, and do all the power and ground input
tests (see page 22-273). If the tests prove OK,
substitute a known good passenger's power
window switch. If the DTC goes away,replace the
original passenger's power window switch. If the
DTC is still present, replace the power window
master switch.
NO − Repair a short to power in the wire.
ＴＡ０８Ａ００Ｋ７６４０００Ｙ１１４２ＦＡＡＴ００
＊０２
＊０３