DESCRIPTION

The door control receiver receives signals from the transmitter and sends these signals to the main body ECU. The main body ECU then controls all doors by sending lock/unlock signals to each door, and sends hazard flasher relay signals to the turn signal flasher relay (hazard warning lights).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

(a) When the door control switch on the master switch assembly is operated, check that the locked doors unlock (See page ).

OK:

Locked doors unlock.

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

(a) Check that the key reminder warning buzzer operates normally.

OK:

Key reminder warning buzzer operates normally.

NG

GO TO KEY REMINDER WARNING SYSTEM

OK

(a) When known good registered door control transmitter is used, check that the wireless functions operate normally.

Result

B

GO TO STEP 5

A

(a) Inspect the battery capacity.

(1) Remove the battery from the electrical key transmitter that does not operate (See page ). Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative (-) terminal.

NOTICE:

Do not wrap the lead wire around a terminal, wedge it between the terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

(b) Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.

(c) Using an oscilloscope, check the transmitter battery voltage waveform. HINT: Measure the transmitter battery voltage while pressing the LOCK or UNLOCK switch on the transmitter. Standard Voltage: Item Content Tester Connection Battery positive (+) - Battery negative (-) Tool Setting 0.5 V/DIV., 100 ms/DIV. Condition Ignition switch off, all doors closed and LOCK or UNLOCK switch is pressed Specified Condition 2.2 to 3.2 V (Refer to the waveform)

OK

REPLACE DOOR CONTROL TRANSMITTER MODULE

NG

REPLACE TRANSMITTER BATTERY

(a) Bring the transmitter near the door control receiver, and perform a wireless operation check.

OK:

Wireless functions operate normally.

OK

END (AFFECTED BY WAVE INTERFERENCE)

NG

(a) Switch to self-diagnostic mode by operating the ignition key cylinder.

(1) Make sure that the vehicle is in its initial condition. Then insert the key into the ignition key cylinder and remove it.

(2) Within 5 seconds after removing the key, insert the key into the ignition key cylinder (ignition switch off). Then turn the ignition switch to ON and off.

(3) Within 30 seconds after turning the ignition switch off, perform the following operation 9 times: turn the ignition switch to ON and then off.

NOTICE:

If the system cannot enter self-diagnostic mode, the system returns to normal mode.

(b) Check that the system has switched to self-diagnostic mode by checking the room light output pattern.

(c) Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer output pattern.

NEXT

(a) Inspect the diagnostic outputs when the door control transmitter switch is held down. The diagnostic outputs can be checked by the flash patterns of the interior lights and the buzzer patterns of the wireless door lock buzzer.

Result

A

REPLACE MAIN BODY ECU

C

GO TO STEP 9

B

(a) Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered (See page ).

OK:

Recognition code can be registered.

OK

END (GO TO OPERATION CHECK)

NG

GO TO STEP 13

(a) Prepare the door control transmitter from another vehicle.

(b) Press and hold down the door control transmitter switch.

(c) Check that an unmatching recognition code is output.

OK:

Unmatching recognition code is output.

OK

REPLACE DOOR CONTROL TRANSMITTER MODULE

NG

(a) Disconnect the door control receiver connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Measure the voltage according to the value(s) in the table below. Standard Voltage: Tester Connection Condition Specified Condition L26-2 (RDA) - Body ground Ignition switch off, all doors closed and transmitter switch not pressed 10 to 14 V L26-2 (RDA) - Body ground Ignition switch off, all doors closed and transmitter switch pressed Pulse generation Text in Illustration *a Component with harness connected (Door Control Receiver)

NG

REPLACE DOOR CONTROL RECEIVER

OK

(a) Disconnect the D13 main body ECU connector and the L26 door control receiver connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Temporarily replace the door control receiver with a new or known good one (See page ).

NEXT

(a) Perform the Registration procedure (See page ).

NEXT

(a) Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

OK:

Doors can be locked and unlocked using transmitter.

OK

END (DOOR CONTROL RECEIVER WAS DEFECTIVE)

NG

REPLACE MAIN BODY ECU