Toyota 2004 CELICA Electric Troubleshooting Manual page 131

WIRELESS DOOR LOCK CONTROL
SYSTEM OUTLINE
In this system, the door control receiver receives weak radio wave transmitted from the transmitter built into the ignition key,
and outputs signals to the body ECU. Through communication control of the body ECU, all the doors can be locked and
unlocked by remote control.
1. NORMAL OPERATION
∗ Lock operation
When the lock SW on the transmitter is pressed, all doors are locked.
∗ Unlock operation
When the unlock SW on the transmitter is pressed once, only the driver door is unlocked. When the unlock SW is pressed
again within 3 seconds, all the doors are unlocked.
2. AUTO LOCK FUNCTION
If the door is not opened within 30 seconds after the door has been unlocked by pressing the unlock SW on the transmitter,
all the doors will be locked automatically.
3. WIRELESS DOOR LOCK STOP FUNCTION
If any of the following conditions is detected, the wireless door lock does not function.
∗ Lock operation
Any door is open (The door courtesy SW is on). The ignition key is inserted into the ignition key cylinder (The unlock
warning SW is on). The ignition SW is turned to the ON position.
∗ Unlock operation
The ignition SW is turned to the ON position.
4. BUZZER SOUND FUNCTION
The buzzer emits a sound when operating the transmitter, once for lock operation and twice for unlock operation.
When the lock SW is pressed while any door is open, the keyless buzzer goes on for 10 seconds. The buzzer will stop when
all the doors are closed, or when unlocked with the unlock SW.
5. ILLUMINATED ENTRY FUNCTION
When the ECU detects the unlock state after the unlock operation has been made, it turns on the front interior light, such as
the ignition key cylinder light for 15 sec. If all the doors are locked during this operation, lighting is cancelled and the lights
immediately fade out.
6. REPEAT FUNCTION
If the lock detection signal in response to the output signal is not received after the body ECU has output the lock signal, the
lock signal is output again after approximately 2 sec.
7. PANIC FUNCTION
When the panic SW on the transmitter is pressed, the panic mode is activated. The panic mode is canceled when the unlock
SW or panic SW is pressed.
SERVICE HINTS
U1 UNLOCK WARNING SW
2-1 : Closed with the ignition key in the cylinder
D2 DOOR CONTROL RECEIVER
5-GROUND : Always approx. 12 volts
1-GROUND : Always continuity
: PARTS LOCATION
Code
B6 A 36
B7 B 36
B10 38
C12 A 36
C13 B 36
D2 38
D3 38
D4 38
132
See Page Code
D5
D6
E2
E3
E8
J3
J8
J10
See Page
38
38
A 32 (1ZZ-FE)
B 32 (1ZZ-FE)
E 34 (2ZZ-GE)
37
37
37
2004 CELICA (EWD538U)
Code See Page
J11 38
J12 A 38
J13 B 38
J14 38
L4 38
P5 37
U1 37