Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM transmit and receive the signal by power window serial link.
The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and power window and door lock/unlock switch RH
Keyless power window down signal
The signal mentioned below is transmitted from main power window and door lock/unlock switch to power window and door lock/unlock switch RH
Front door window RH operation signal
Retained power operation signal
Power window lock switch signal
CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL
CONSULT
Select “CDL LOCK SW ” or “CDL UNLOCK SW” in “Data Monitor” mode of “BCM(DOOR LOCK)”. Refer to CONSULT Function (BCM - DOOR LOCK).
| Monitor item | Condition | |
|---|---|---|
| CDL LOCK SW | LOCK | : ON |
| UNLOCK | : OFF | |
| CDL UNLOCK SW | LOCK | : OFF |
| UNLOCK | : ON | |
Is the inspection result normal?
YES>>Power window serial link is OK.
NO>>Refer to Diagnosis Procedure.
Power Window Serial Link Check
CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH
Remove key and close the front door LH and RH.
Check signal between BCM connector and ground with oscilloscope when door lock and unlock switch (LH and RH) is turned to “LOCK” or “UNLOCK”.
Check that signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch (LH and RH) is turned to “LOCK” or “UNLOCK”.
| (+) | (–) |
Signal (Reference value) | |
|---|---|---|---|
| BCM | |||
| Connector | Terminal | ||
| M19 | 54 | Ground |
|
Is the inspection result normal?
YES>>Power window serial link is OK.
NO>>GO TO 2.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
Ignition switch OFF.
Disconnect BCM connector.
Check continuity between BCM connector and power window and door lock/unlock switch RH connector.
| BCM | Power window and door lock/unlock switch RH | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| M19 | 54 | D105 | 3 | Yes |
Check continuity between BCM connector and ground.
| BCM | Ground | Continuity | |
| Connector | Terminal | ||
| M19 | 54 | No | |
Is the inspection result normal?
YES>>Replace power window and door lock/unlock switch. Refer to Removal and Installation.
NO>>Repair or replace the harness or connectors.
Main Power Window and Door Lock/unlock SwitchUnfastening the seat belts

To unfasten the seat belt, press the button
on the buckle
. The seat belt
automatically
retracts.