Toyota 4RUNNER 2007 Electrical Wiring Diagram page 7

B HOW TO USE THIS MANUAL
[O]
System Outline
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
[P]
: Parts Location
Code
C7 34
H17 36
[Q]
: Relay Blocks
Code See Page
1 18
[R]
: Junction Block and Wire Harness Connector
Code See Page
3C 22
IB 20
[S]
: Connector Joining Wire Harness and Wire Harness
Code See Page
IE1 42
BV1 50
[T]
: Ground Points
Code See Page
BL 50
BO 50
6
See Page Code
L4
R6
Relay Blocks (Relay Block Location)
R/B No.1 (Instrument Panel Brace LH)
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
Joining Wire Harness and Wire Harness (Connector Location)
Floor Wire and Instrument Panel Wire (Left Kick Panel)
Luggage Room Wire and Floor Wire (Luggage Room Left)
Ground Points Location
Under the Left Center Pillar
Back Panel Center
4RUNNER (EM03M0U)
See Page
36
37
Code See Page
R7 37
S6 35