Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 278
LIGHTING – LIGHTING SYSTEM
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SYSTEM DESCRIPTION
1.
LIGHTING SYSTEM
(a) Illumination control system (Illuminated entry
system):
When the doors are unlocked through a key or
transmitter operation, or when a door is opened or
closed, the illuminated entry system turns on the
room light assembly.
(1) The main body ECU receives the following
signal (A).
•
Door courtesy switch signal
•
Door detection switch signal
•
Ignition switch signal
(2) The main body ECU controls the following signal
based on the signals listed in A.
•
Illumination operation signal
(3) The main body ECU controls the on/off and
fade-in/fade-out operation of the following parts.
•
Room light assembly
(b) Battery saver system:
When the ignition switch is turned off and the any of
the doors is open continuously for 30 minutes, the
main body ECU turns the illumination operation
signal off. As a result, the room light assembly,
taillights, and the headlights turn off.
(1) The main body ECU receives the following
signals (B).
•
Door courtesy switch signal
•
Ignition switch signal
(2) The main body ECU controls the following signal
based on the signals listed in B (C).
•
Illumination operation signal
(3) The main body ECU controls the illumination
period of the following parts based on the
signals listed in C.
•
Room light assembly
•
Headlight (Low)
•
Position light (Front and Rear)
(c) Manual light control system:
This system functions when lights such as the
headlights and taillights are illuminated through
manual operation of the light control switch.
(1) The main body ECU receives the following
signals (D).
•
Light control switch signal
•
Headlight dimmer switch signal
(2) The main body ECU controls the following
signals based on the signals listed in D (E).
•
HEAD relay operation signal
•
TAIL relay operation signal
•
Running light relay assembly operation signal
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LIGHTING – LIGHTING SYSTEM
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(3) The main body ECU controls the on/off
operation of the following parts based on the
signals listed in E.
•
Headlight (Low)
•
Headlight (High)
•
Position light (Front and Rear)
(d) Light auto turn off system (for U. S. A):
With the light control switch in the TAIL or HEAD
position, the headlights and taillights go off 30
seconds after the ignition switch is turned off and all
the doors are closed. However, when all the doors
are locked using the door lock button, ignition key,
or LOCK button on the transmitter, the headlights
and taillights go off immediately.
Light auto turn off system (for Canada):
With the light control switch in the TAIL or HEAD
position, the headlights and taillights go off
immediately after the ignition switch is turned off
and the driver door is opened.
(1) The main body ECU receives the following
signals (F).
•
Door courtesy switch signal
•
Ignition switch signal
(2) The main body ECU controls the following
signals based on the signals listed in F (G).
•
HEAD relay operation signal
•
TAIL relay operation signal
•
Running light relay assembly operation signal
(3) The main body ECU controls the illumination
period of the following parts based on the
signals listed in G.
•
Headlight (Low)
•
Headlight (High)
•
Position light (Front and Rear)
(e) Daytime running light system:
This system is directly connected to the low-beam
headlights and is designed to automatically activate
the daytime running lights in order to increase the
visibility of the vehicle.
(1) The main body ECU receives the following
signals (I).
•
Ignition switch signal
•
Generator signal
•
Parking brake switch signal
•
Light control switch signal
(2) The main body ECU controls the following signal
based on the signals listed in I.
•
Running light relay assembly operation signal
(3) The main body ECU controls the on/off
operation of the following part.
•
Headlight (Low)
LIGHTING – LIGHTING SYSTEM
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HOW TO PROCEED WITH
TROUBLESHOOTING
HINT:
•
Use these procedures to troubleshoot the lighting system.
•
*: Use the intelligent tester.
NEXT
NEXT
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace battery
before proceeding.
NEXT
(a) Use the intelligent tester to check if the Multiplex
Communication System (MPX) is functioning normally.
Result
B
A
Result
B
1
VEHICLE BROUGHT TO WORKSHOP
2
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3
INSPECT BATTERY VOLTAGE
4
INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX
COMMUNICATION SYSTEM (BEAN)*
Result
Proceed to
MPX DTC is not output
A
MPX DTC is output
B
GO TO MULTIPLEX COMMUNICATION
SYSTEM
5
PROBLEM SYMPTOMS TABLE
Result
Proceed to
If fault is not listed in problem symptoms table
A
If fault is listed in problem symptoms table
B
Go to step 7
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