Subaru BRZ 2013 · Service Manual Exterior body & electrical

Headlight dimmer switch

Components Inspection Removal / installation

LIGHTING (EXTERIOR)
HEADLIGHT DIMMER SWITCH
EXPLODED VIEW
REMOVAL
1. Removal of the steering roll connector SUB-ASSY (with steering sensor) (Refer to)
2. Removal of the windshield wiper switch ASSY (Refer to )
3. Removal of the headlight dimmer switch ASSY
(1) Disconnect the connector.
(2) Using pliers, loosen the band clamp as in the figure.
Captions in illustration
*1
 Band clamp
(3) With the band clamp loosened, release the tab, and remove the headlight dimmer switch ASSY.
UNIT INSPECTION
1. Inspection of the headlight dimmer switch ASSY (LHD model)
(1) Measurement of the Resistance of the light control switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
18 (T) - 12 (EL)
 Light control switch OFF
 10 kΩ or more
20 (H) - 12 (EL)
 10 kΩ or more
19 (A) - 12 (EL)
 10 kΩ or more
18 (T) - 12 (EL)
 Light control switch TAIL
 Less than 1 Ω
18 (T) - 12 (EL)
 Light control switch HEAD
 Less than 1 Ω
20 (H) - 12 (EL)
 Less than 1 Ω
19 (A) - 12 (EL)
[Preparatory Code #1]
 Light control switch AUTO
 Less than 1 Ω
*1: With light control system
(2) Measurement of the Resistance of the dimmer switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
11 (HU) - 12 (EL)
 Dimmer switch FLASH
 Less than 1 Ω
17 (HF) - 12 (EL)
 Less than 1 Ω
11 (HU) - 12 (EL)
 Dimmer switch HI BEAM
 Less than 1 Ω
NOTE:
“HI BEAM” inspection is performed when the light control switch is in the “HEAD” position.
(3) Measurement of the Resistance of the turn signal switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
13 (TR) - 12 (EL)
 Turn signal switch OFF
 10 kΩ or more
15 (TL) - 12 (EL)
 10 kΩ or more
13 (TR) - 12 (EL)
 Turn signal switch (TURN R) ON
 Less than 1 Ω
15 (TL) - 12 (EL)
 Turn signal switch (TURN L) ON
 Less than 1 Ω
(4) Measurement of the Resistance of the fog light switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
4 (BFG) - 3 (LFG)
[Preparatory Code #1]
 Fog light switch OFF
 10 kΩ or more
4 (BFG) - 3 (LFG)
[Preparatory Code #1]
 Fog light switch Fr
 Less than 1 Ω
2 (B) - 3 (LFG)
[Preparatory Code #2]
 Fog light switch OFF
 10 kΩ or more
2 (B) - 3 (LFG)
[Preparatory Code #2]
4 (BFG) - 3 (LFG)
 Fog light switch Rr
 Less than 1 Ω
*1: With front fog lights
*2: With rear fog light
Captions in illustration
*a
 Connector not connected
(Headlight dimmer switch ASSY)
2. Inspection of the headlight dimmer switch ASSY (RHD model)
(1) Measurement of the Resistance of the light control switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
13 (T) - 19 (EL)
 Light control switch OFF
 10 kΩ or more
11 (H) - 19 (EL)
 10 kΩ or more
12 (A) - 19 (EL)
[Preparatory Code #1]
 10 kΩ or more
13 (T) - 19 (EL)
 Light control switch TAIL
 Less than 1 Ω
13 (T) - 19 (EL)
 Light control switch HEAD
 Less than 1 Ω
11 (H) - 19 (EL)
 Less than 1 Ω
12 (A) - 19 (EL)
[Preparatory Code #1]
 Light control switch AUTO
 Less than 1 Ω
*1: With light control system
(2) Measurement of the Resistance of the dimmer switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
14 (HF) - 19 (EL)
 Dimmer switch FLASH
 Less than 1 Ω
20 (HU) - 19 (EL)
 Less than 1 Ω
20 (HU) - 19 (EL)
 Dimmer switch HI BEAM
 Less than 1 Ω
NOTE:
“HI BEAM” inspection is performed when the light control switch is in the “HEAD” position.
(3) Measurement of the Resistance of the turn signal switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
16 (TR) - 19 (EL)
 Turn signal switch OFF
 10 kΩ or more
18 (TL) - 19 (EL)
 10 kΩ or more
16 (TR) - 19 (EL)
 Turn signal switch (TURN R) ON
 Less than 1 Ω
18 (TL) - 19 (EL)
 Turn signal switch (TURN L) ON
 Less than 1 Ω
(4) Measurement of the Resistance of the fog light switch
(a) Check the resistance between the connector terminals.
Resistance
Inspection terminals (Terminal symbol)
 Inspection conditions
 Standard value
9 (BFG) - 8 (LFG)
[Preparatory Code #1]
 Fog light switch OFF
 10 kΩ or more
9 (BFG) - 8 (LFG)
[Preparatory Code #1]
 Fog light switch Fr
 Less than 1 Ω
7 (B) - 8 (LFG)
[Preparatory Code #2]
 Fog light switch OFF
 10 kΩ or more
7 (B) - 8 (LFG)
[Preparatory Code #2]
9 (BFG) - 8 (LFG)
 Fog light switch Rr
 Less than 1 Ω
*1: With front fog lights
*2: With rear fog light
Captions in illustration
*a
 Connector not connected
(Headlight dimmer switch ASSY)