2006 TOYOTA RAV4 fog light

LIGHTING – LIGHTING SYSTEMLI–23
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ILE (IK-2) - GND1 (IE-17) W - W-B Illumination signal • Room light switch
position is DOOR
•Door closed10 to 14 V
ILE (IK-2) - GND1 (IE-17) W - W-B Illumination signal • Room light switch
position is DOOR
• Door openBelow 1 V
FSPT (E15-2) - GND1 (IE-
17)V - W-B Foot light illumination
(Illumination signal)Foot light illumination OFF 10 to 14 V
FSPT (E15-2) - GND1 (IE-
17)V - W-B Foot light illumination
(Illumination signal)Foot light illumination ON Below 1 V
HU (IJ-4) - GND1 (IE-17) O - W-B Headlight dimmer switch
(HIGH signal)Light control switch is
HEAD
Headlight dimmer switch
is LOW10 to 14 V
HU (IJ-4) - GND1 (IE-17) O - W-B Headlight dimmer switch
(HIGH signal)Light control switch is
HEAD
Headlight dimmer switch
is HIGHBelow 1 V
LCTY (E15-8) - GND1 (IE-
17)SB - W-B Courtesy switch
(Rear left door circuit)Rear left door is closed Below 1 V
LCTY (E15-8) - GND1 (IE-
17)SB - W-B Courtesy switch
(Rear left door circuit)Rear left door is open 10 to 14 V
FFGO (E17-17) - GND1
(IE-17)G - W-B Front fog relay
(Front fog circuit)Front fog light is OFF 10 to 14 V
FFGO (E17-17) - GND1
(IE-17)G - W-B Front fog relay
(Front fog circuit)Front fog light is ON Below 1 V
DCTY (IA-21) - GND1 (IE-
17)W - W-B Courtesy switch
(Front left door circuit)Front left door is open Below 1 V
DCTY (IA-21) - GND1 (IE-
17)W - W-B Courtesy switch
(Front left door circuit)Front left door is closed 10 to 14 V
RRCY (ID-7) - GND1 (IE-
17)LG - W-B Courtesy switch
(Rear right door circuit)Rear right door is open Below 1 V
RRCY (ID-7) - GND1 (IE-
17)LG - W-B Courtesy switch
(Rear right door circuit)Rear right door is closed 10 to 14 V
HF (E15-22) - GND1 (IE-
17)R - W-B Headlight dimmer switch
(FLASH signal)Headlight dimmer switch
is OFF10 to 14 V
HF (E15-22) - GND1 (IE-
17)R - W-B Headlight dimmer switch
(FLASH signal)Headlight dimmer switch
is FLASHBelow 1 V
FFOG (E17-13) - GND1
(IE-17)GR - W-B Front fog light switch
(Front fog light signal)Light control switch is TAIL
Fog light switch is OFF10 to 14 V
FFOG (E17-13) - GND1
(IE-17)GR - W-B Front fog light switch
(Front fog light signal)Light control switch is TAIL
Fog light switch is ONBelow 1 V
PCTY (IC-14) - GND1 (IE-
17)BR - W-B Courtesy switch
(Front right door circuit)Front right door is open Below 1 V
PCTY (IC-14) - GND1 (IE-
17)BR - W-B Courtesy switch
(Front right door circuit)Front right door is closed 10 to 14 V
BCTY (IA-7) - GND1 (IE-
17)LG - W-B Courtesy switch
(Back door)Back door is open Below 1 V
BCTY (IA-7) - GND1 (IE-
17)LG - W-B Courtesy switch
(Back door)Back door is closed 10 to 14 V
LSWP (E15-10) - GND1
(IE-17)Y - W-B Door lock position switch
(Front right door)Front right door is in
unlock position10 to 14 V
LSWP (E15-10) - GND1
(IE-17)Y - W-B Door lock position switch
(Front right door)Front right door is in lock
positionBelow 1 V
LSWD (E15-25) - GND1
(IE-17)Y - W-B Door lock position switch
(Front left door)Front left door is in unlock
position10 to 14 V
LSWD (E15-25) - GND1
(IE-17)Y - W-B Door lock position switch
(Front left door)Front left door is in lock
positionBelow 1 V Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition

LI–24LIGHTING – LIGHTING SYSTEM
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If the result is not as specified, the junction block
(main body ECU) may have a malfunction.
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the intelligent tester's DATA LIST allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the DATA LIST early in
troubleshooting is one way to save time.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Read the DATA LIST according to the display on the
tester.
Main body ECU
B127989E01
ItemMeasurement Item/
Display (Range)Normal Condition Diagnostic Note
ACC SW ACC switch signal / ON or OFFON: Ignition switch is in ACC, ON
or START position
OFF: Ignition switch is in OFF
position-
IG SW IG switch signal / ON or OFFON: Ignition switch is in ON or
START position
OFF: Ignition switch is in OFF or
ACC position-
D DOR CTY SWDriver's door courtesy switch
signal / ON or OFFON: Driver's door is open
OFF: Driver's door is closed-
D LOCK POS SWDriver's door lock position switch
signal / ON or OFFON: Door lock is in unlock
position
OFF: Door lock is in lock position-
P DOR CYT SWPassenger's door courtesy switch
signal / ON or OFFON: Front passenger's door is
open
OFF: Front passenger's door is
closed-
P LOCK POS SWFront passenger's door lock
position switch signal / ON or
OFFON: Front passenger's door lock
is in unlock position
OFF: Front passenger's door lock
is in lock position-
RR DOR CTY SWRear door RH courtesy switch
signal / ON or OFFON: Right rear door is open
OFF: Right rear door is closed-
DIMMER SWHeadlight dimmer switch signal /
ON or OFFON: Headlight dimmer switch is in
HI or FLASH position
OFF: Headlight dimmer switch is
in LO position-
HIGH FLASHER SWHeadlight dimmer switch signal /
ON or OFFON: Headlight dimmer switch is in
FLASH position
OFF: Headlight dimmer switch is
in except FLASH position-
F FOG LIGHT SWFront fog light switch signal / ON
or OFFON: Front fog light switch is ON
position
OF F: F ron t fog light switch is OFF
position-
HEAD LIGHT SWHeadlight control switch signal /
ON or OFFON: Light control switch is in
HEAD position
OFF: Light control switch is in
except HEAD position-

LIGHTING – LIGHTING SYSTEMLI–25
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2. PERFORM ACTIVE TEST
HINT:
Performing the intelligent tester's ACTIVE TEST allows
relay, VSV, actuator and other items to be operated
without removing any parts. Performing the ACTIVE
TEST early in troubleshooting is one way to save time.
The DATA LIST can be displayed during the ACTIVE
TEST.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Perform the ACTIVE TEST by following the
directions on the tester screen.
Main body ECU
TAIL LIGHT SW Taillight switch signal / ON or OFFON: Light control switch is in TAIL
or HEAD position
OFF: Light control switch is in
OFF position-
RL DOR CTY SWRear door LH courtesy switch
signal / ON or OFFON: Left rear door is open
OFF Left rear door is closed-
BK DOR CTY SWBack door courtesy switch signal /
ON or OFFON: Back door is open
OFF: Back door is closed- ItemMeasurement Item/
Display (Range)Normal Condition Diagnostic Note
Item Test Details Diagnostic Note
HAZARD Turn hazard light flasher relay ON / OFF -
F FOG LIGHT RLY Turn front fog light relay ON / OFF -
HEAD LIGHT Turn headlight relay ON / OFF -
HEAD LIGHT (HI)Turn headlight dimmer relay (Headlight
dimmer switch HI position) ON / OFF-
TAIL LIGHT Turn taillight relay ON / OFF -
ILLUMI OUTPUTTest Details:
Turn interior light and key illumination ON /
OFF
Vehicle Condition:
Interior light switch is in DOOR position and
all doors are closed-
STEP LIGHT Foot light illumination ON / OFF -

LIGHTING – LIGHTING SYSTEMLI–47
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DESCRIPTION
The main body ECU controls the front fog light relay (Marking: FR FOG) when a signal is received from
the headlight dimmer switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
Front Fog Light Circuit
1PERFORM ACTIVE TEST BY INTELLIGENT TESTER
B118206E03

LI–48LIGHTING – LIGHTING SYSTEM
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(b) Turn the ignition switch to the ON position and press the
intelligent tester main switch ON.
(c) Select the item below in the ACTIVE TEST and then
check the relay operation.
Main body ECU
OK:
Front fog light comes on.
OK
NG
(a) Check that the taillight comes on when the light control
switch is on (TAIL).
OK:
Taillight comes on.
NG
OK
(a) Remove the FR FOG fuse from the instrument panel
junction block.
(b) Measure the resistance of the fuses.
Standard resistance:
Below 1
NG
OK
(a) Remove the fog light bulb.
(b) Connect the positive (+) lead from the battery to terminal
2 and the negative (-) lead to terminal 1, then check that
the bulb illuminates.
OK:
Bulb illuminates.
NG
OK
Item Test Details Diagnostic Note
F FOG LIGHT RLY Turn front fog light relay: ON / OFF -
Go to step 9
2CHECK TAILLIGHT
GO TO TAILLIGHT RELAY CIRCUIT
3INSPECT FUSE (FR FOG)
REPLACE FUSE
4INSPECT FOG LIGHT BULB
B128063E02
REPLACE FOG LIGHT BULB

LIGHTING – LIGHTING SYSTEMLI–49
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(a) Remove the front fog light relay from the No. 6 relay
block.
(b) Measure the resistance of the relay.
Standard resistance
NG
OK
(a) Disconnect the E17 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage
NG
OK
(a) Remove the front fog light relay from the No. 6 relay
block.
(b) Measure the voltage of the relay block.
standard voltage
NG
OK
5INSPECT FRONT FOG LIGHT RELAY (Marking: FR FOG)
B060778E78
Tester Connection Specified Condition
3 - 5 10 k
or higher
3 - 5 Below 1
(Battery voltage applied to terminals
1 and 2)
REPLACE FRONT FOG LIGHT RELAY
6CHECK WIRE HARNESS (BATTERY - MAIN BODY ECU)
B129968E03
Tester Connection Condition Specified Condition
E17-17 (FFGO) - Body
groundLight control switch on
(TAIL)10 to 14 V
REPAIR OR REPLACE HARNESS AND
CONNECTOR
7CHECK WIRE HARNESS (FRONT FOG LIGHT RELAY - BATTERY)
B128064E04
Tester Connection Specified Condition
No. 6 relay block front fog light relay
terminal 5 - Body ground10 to 14 V
REPAIR OR REPLACE HARNESS AND
CONNECTOR

LI–50LIGHTING – LIGHTING SYSTEM
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(a) Remove the front fog light relay from the No. 6 relay
block.
(b) Disconnect the A11 and A28 front fog light connectors.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
NG
OK
(a) Disconnect the E12 headlight dimmer switch connector.
(b) Disconnect the E17 main body ECU connector.
8CHECK WIRE HARNESS (FRONT FOG LIGHT RELAY - FRONT FOG LIGHT AND BODY
GROUND)
B128065E05
Tester Connection Specified Condition
No. 6 relay block front fog light relay
terminal 3 - A11-2Below 1
No. 6 relay block front fog light relay
terminal 3 or A11-2 - Body ground10 k or higher
No. 6 relay block front fog light relay
terminal 3 - A28-2Below 1
No. 6 relay block front fog light relay
terminal 3 or A28-2 - Body ground10 k or higher
A11-1 - Body ground Below 1
A28-1 - Body ground Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR
REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)
9CHECK WIRE HARNESS (DIMMER SWITCH - MAIN BODY ECU AND BODY GROUND)
B128083E02

LIGHTING – LIGHTING SYSTEMLI–51
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(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
NG
OK
(a) Remove the headlight dimmer switch.
(b) Measure the resistance of the switch.
Standard resistance
NG
OK
Tester Connection Specified Condition
E17-13 (FFOG) - E12-4 (BFG) Below 1
E17-13 (FFOG) or E12-4 (BFG) - Body
ground10 k or higher
REPAIR OR REPLACE HARNESS AND
CONNECTOR
10INSPECT FOG LIGHT SWITCH
E068152E11
Tester Connection Condition Specified Condition
4 (BFG) - 3 (LFG) Fog light switch OFF 10 k
or higher
4 (BFG) - 3 (LFG) Fog light switch ON Below 1
REPLACE HEADLIGHT DIMMER SWITCH
ASSEMBLY
REPAIR OR REPLACE HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - BODY
GROUND)