2003 4RUNNER (EWD514U)
137
The automatic light control system works when the light control SW is turned to AUTO. The automatic light control sensor
detects the brightness around the vehicle. By this function, the system automatically turns the taillight and headlight on if the
brightness is below the regular level and turns the taillight and headlight off when the surroundings become brighter than the
regular level.
C12 Combination SW
12–16 : Closed with the light control SW at AUTO position
Body ECU
22–Ground : Approx. 12 volts with the ignition SW at ACC or ON position
10–Ground : Approx. 12 volts with the ignition SW at ON position
11–Ground : Always approx. 12 volts
4, 16–Ground : Always continuity
D12 Door Courtesy SW Front LH
1–Ground : Continuity with the driver’s door open
: Parts Location
Code See Page Code See Page Code See Page
A39 36 C12 37 J15 38
B5 B 36 D12 40 J18 A 38
B6 C 36 J5 38 J19 B 38
:
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
:
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C
24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H 25 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
:
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IG1 50 Instrument Panel No.2 Wire and Instrument Panel Wire (Behind the Combination Meter)
IH1 50 Instrument Panel Wire and Instrument Panel Wire (Behind the Combination Meter)
:
Ground Points
Code See Page Ground Points Location
IG 48 Left Kick Panel
System Outline
Service Hints
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