Toyota Tundra 2005 Service - Repair - Maintenance page 4090

System Outline
The current flows continuously from DOOR NO.2 fuse to body ECU TERMINAL BDR, from PWR NO.2 fuse to front
passenger door ECU TERMINAL BDR, from PWR NO.1 fuse to driver door ECU TERMINAL BDR, and from ECU-B fuse to
body ECU, front passenger ECU, driver door ECU, door control receiver.
1. Wireless Door Lock/Unlock Normal Operation:
Lock operation
All the doors are locked when the lock SW of the transmitter is operated.
Unlock operation
When the unlock SW of the transmitter is operated, the driver's door is unlocked, and if the SW is operated again within 3
seconds, all the doors are unlocked.
2. Automatic Lock Operation
When the doors are unlocked by operating the unlock SW of the transmitter, if no door is opened or the ignition key is not
inserted in the key cylinder within 30 seconds, all the doors will be locked again.
3. Lock/Unlock Operation Audiovisual Effect Check
When the vehicle is locked by the transmitter, the parking light & taillight flashes once, and a buzzer sounds once. When the
vehicle is unlocked by the transmitter, the parking light & taillight flashes twice, and a buzzer sounds twice.
When the unlock SW of the transmitter is operated while all the doors are locked, the doors will be unlocked and the room
light will come on.
4. Output Repeat Function
If there is not change in the lock condition of the vehicle after the lock signal is output from the transmitter, the lock signal is
output again.
Service Hints
D16, D17, D38, D39 Door Courtesy SW Front LH, RH, Rear LH, RH
1-Ground : Closed with the door open
D42 Door Lock Motor, Door Key Lock and Unlock SW and Door Unlock Detection SW Front LH
2-Ground : Approx. 12 volts with the door lock motor at lock operate
1-Ground : Approx. 12 volts with the door lock motor at unlock operate
5-3 : Closed with the door lock cylinder locked with key
6-3 : Closed with the door lock cylinder unlocked with key
D43 Door Lock Motor, Door Key Lock and Unlock SW and Door Unlock Detection SW Front RH
6-Ground : Approx. 12 volts with the door lock motor at lock operate
5-Ground : Approx. 12 volts with the door lock motor at unlock operate
2-4 : Closed with the door lock cylinder locked with key
1-4 : Closed with the door lock cylinder unlocked with key
D40 Door Lock Motor and Door Unlock Detection SW Rear LH
4-Ground : Approx. 12 volts with the door lock motor at lock operate
1-Ground : Approx. 12 volts with the door lock motor at unlock operate
D41 Door Lock Motor and Door Unlock Detection SW Rear RH
4-Ground : Approx. 12 volts with the door lock motor at lock operate
1-Ground : Approx. 12 volts with the door lock motor at unlock operate
: Parts Location
Code See Page
B9 A 66
B10 B 66
B11 C 66
D16 70
D17 70
D32 67
D34 70
D35 70
D38 70
D39 70
Code See Page
D40 70
D41 70
D42 70
D43 70
D44 70
F13 34, 64
F17 70
J34 65
J36 A 68
J37 B 68
2005 TOYOTA TUNDRA (EWD611U)
Code See Page
J38 A 68
J39 B 68
J45 68
J46 68
J47 A 68
J48 B 68
J50 68
J58 68
U1 69
W5 65
433