Toyota Highlander Service Manual: On-vehicle inspection
1. INSPECT WIRELESS DOOR LOCK CONTROL FUNCTION
(a) Check the basic function.
- In the remote control operational area, check that all the doors
lock or unlock when the switch
has been pressed for approximately 1 second. However, this will not happen
when the key is in
the ignition key cylinder or any of the doors is open.
(b) Check the automatic locking function.
- Check that all doors lock automatically as long as none of the
doors have been opened or all
doors have not been locked within approximately 30 seconds after all doors
are unlocked by
pressing the switch.
- Under the above condition, check that the automatic locking
function does not operate when any
of the doors has been opened or all doors have been locked within
approximately 30 seconds
after all doors are unlocked by pressing the switch.
(c) Check the switch operation fail-safe function.
- Check that doors can not be locked or unlocked by the switch while
the key is in the ignition key
cylinder. However, this does not apply when the system is in the recognition
code registration
mode.
- Check that doors can not be locked or unlocked by the switch of an
unregistered transmitter.
(d) Check the chattering prevention function.
- Check that the corresponding operation occurs only once, and not
repeated continuously while
the switch is kept pressed. However, when the switch is operated repeatedly
at one second intervals,
check that the corresponding operation is carried out.
(e) Check the repeat function.
- Check that all doors attempt to automatically lock once again, 2
second after the lock switch has
been pressed while the movement of the driver side door control knob, which
is in the unlocked
state, is being restricted.
(f) Check the operation stop function when a door is open or not completely
closed.
- Check that doors are not locked or unlocked by the switch while
the doors are open or not completely
closed.
(g) Check the hazard flashing and buzzer sounding function (answer-back).
- Check that the hazard lights flash and also the buzzer sounds once
(when locked) or twice (when
unlocked) simultaneously with locking or unlocking operation of all doors,
when the switch is
pressed.
(h) Check the room light on function.
HINT:
Move the room light switch in the DOOR position befor the check.
- Check that the room light will be on simultaneously with the
unlocking operation when the switch
has been pressed for 1 second
- Check that the room light will be off in approximately 15 seconds
if doors have not been opened
after the unlocking operation.
2. CHECK WIRELESS CONTROL RECEIVER
(a) Disconnect the receiver connector and check that the
connector on the wire harness side.
Continuity and Voltage:
HINT:
If the value is not as specified the vehicle's side may be defective.
(b) Connect the receiver connector and check that the voltage using an
oscilloscope.
Voltage:
HINT:
If the result is not as specified, there may be a malfunction on the vehicle
side.
HINT:
The switch described in this text indicates the switch for transmitting signals,
which is built in the door control
transmitter.
1. NOTE WHEN CHECKING
(a) The wireless door lock remote con ...
REPLACEMENT
1. REMOVE TRANSMITTER BATTERY
NOTICE:
Special caution should be taken when handling each component as they are precise
electronic components.
(a) Using a coin or equivalent, open ...
More about Toyota Highlander:
Problem symptoms table
Use the table below to help determine the cause of the problem. The numbers
indicate the priority
of the possible cause of the problem. Check each part in order. If necessary,
replace these parts.
Symptom
Suspected Area
Bottoming
Vehicle (Overloaded)
...
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