RX400h · Service Manual BODY ELECTRICAL

TERMINALS OF ECU

System information


INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BODY ECU)
E111961E02
Symbols (Terminal No.)
 Wiring Color
 Terminal Description
 Condition
 Specified Condition
ACC, IG (1A-1) - GND1 (1F-10)
 B - W-B
 Battery
(Power source circuit)
 Always
 10 to 14 V
HRLY (1D-3) - GND1 (1F-10)
 GR - W-B
 HEAD Relay
(HEAD signal)
 Light control switch is OFF or TAIL
 10 to 14 V
HRLY (1D-3) - GND1 (1F-10)
 GR - W-B
 HEAD Relay
(HEAD signal)
 Light control switch is HEAD
 Below 1 V
DRL (1D-9) - GND1 (1F-10)
 P - W-B
 DIM Relay
High beam signal)
 Headlight high beam is ON
 Below 1 V
DRL (1D-9) - GND1 (1F-10)
 P - W-B
 DIM Relay
High beam signal)
 Headlight high beam is OFF
 10 to 14 V
BECU (1D-10) - GND1 (1F-10)
 W - W-B
 Battery
(B+ circuit)
 Always
 10 to 14 V
ALTB (1D-16) - GND1 (1F-10)
 R-Y - W-B
 Battery
 Always
 10 to 14 V
MPX1 (1E-7) - GND1 (1F-10)
 BR - W-B
 Multiplex communication
 Ignition switch is OFF
 Below 1 V
MPX1 (1E-7) - GND1 (1F-10)
 BR - W-B
 Multiplex communication
 Ignition switch is ON
 Signal waveform
BECU (1F-1) - GND1 (1F-10)
 SB - W-B
 Overhead ECU
(B+ circuit)
 Always
 10 to 14 V
GND1 (1F-10) - Body ground
 W-B - Body ground
 Body ground
 Always
 Below 1 V
TRLY (1H-11) - GND1 (1F-10)
 Y - W-B
 TAIL relay
(TAIL signal)
 Light control switch is OFF
 Below 1 V
TRLY (1H-11) - GND1 (1F-10)
 Y - W-B
 TAIL relay
(TAIL signal)
 Light control switch is TAIL and fog light switch is ON
 10 to 14 V
HRLY (1H-13) - GND1 (1F-10)
 R - W-B
 Headlight cleaner switch
(HEAD signal)
 Light control switch is OFF or TAIL
 10 to 14 V
HRLY (1H-13) - GND1 (1F-10)
 R - W-B
 Headlight cleaner switch
(HEAD signal)
 Light control switch is HEAD
 Below 1 V
ILE (1I-10) - GND1 (1F-10)
 R - W-B
 Key cylinder light
(Illumination signal)
 Ignition key cylinder light is OFF
 10 to 14 V
ILE (1I-10) - GND1 (1F-10)
 R - W-B
 Key cylinder light
(Illumination signal)
 Ignition key cylinder light is ON
 Below 1 V
TRLY (1L-3) - GND1 (1F-10)
 Y - W-B
 TAIL relay
(TAIL signal)
 Light control switch is OFF
 Below 1 V
TRLY (1L-3) - GND1 (1F-10)
 Y - W-B
 TAIL relay
(TAIL signal)
 Light control switch is TAIL and fog light switch is ON
 10 to 14 V
ILE (1M-1) - GND1 (1F-10)
 R - W-B
 Scuff plate illumination
(Illumination signal)
 Scuff plate illumination OFF
 10 to 14 V
ILE (1M-1) - GND1 (1F-10)
 R - W-B
 Scuff plate illumination
(Illumination signal)
 Scuff plate illumination ON
 Below 1 V
GND2 (1M-9) - GND1 (1F-10)
 W-B - W-B
 Body ground
 Always
 Below 1 V
HU (1N-2) - GND1 (1F-10)
 G - W-B
 Headlight dimmer switch
(HIGH signal)
 Headlight dimmer switch is LOW
 10 to 14 V
HU (1N-2) - GND1 (1F-10)
 G - W-B
 Headlight dimmer switch
(HIGH signal)
 Headlight dimmer switch is HIGH
 Below 1 V
LCTY (1O-7) - GND1 (1F-10)
 B - W-B
 Courtesy switch
(Rear left door circuit)
 Rear left door is open
 Below 1 V
LCTY (1O-7) - GND1 (1F-10)
 B - W-B
 Courtesy switch
(Rear left door circuit)
 Rear left door is closed
 Pulse generation (*1)
LSWL (1P-5) - GND1 (1F-10)
 GR - W-B
 Door lock position switch
(Rear left door circuit)
 Rear left door is in unlock position
 Below 1 V
LSWL (1P-5) - GND1 (1F-10)
 GR - W-B
 Door lock position switch
(Rear left door circuit)
 Rear left door is in lock position
 Pulse generation (*1)
ILE (1R-5) - GND1 (1F-10)
 SB - W-B
 Front interior illumination
(Illumination signal)
 Front interior light is OFF
 10 to 14 V
ILE (1R-5) - GND1 (1F-10)
 SB - W-B
 Front interior illumination
(Illumination signal)
 Front interior light is ON
 Below 1 V
MPX1 (1E-7) - GND1 (1F-10)
 BR - W-B
 Multiplex communication signal
 Ignition switch is OFF
 Below 1 V
MPX1 (1E-7) - GND1 (1F-10)
 BR - W-B
 Multiplex communication signal
 Ignition switch is ON
 Signal waveform
HDLO (B4-4) - GND1 (1F-10)
 SB - W-B
 Headlight cleaner relay
(DRL signal)
 Ignition switch is ON and engine is running
 10 to 14 V
HDLO (B4-4) - GND1 (1F-10)
 SB - W-B
 Headlight cleaner relay
(DRL signal)
 Ignition switch is OFF
 Below 1 V
FFGO (B4-7) - GND1 (1F-10)
 LG - W-B
 Front fog relay
(Front fog circuit)
 Front fog light is OFF
 Below 1 V
FFGO (B4-7) - GND1 (1F-10)
 LG - W-B
 Front fog relay
(Front fog circuit)
 Front fog light is ON
 10 to 14 V
DCYL (B5-13) - GND1 (1F-10)
 SB - W-B
 Courtesy light
(Front left door circuit)
 Front left courtesy light is OFF
 10 to 14 V
DCYL (B5-13) - GND1 (1F-10)
 SB - W-B
 Courtesy light
(Front left door circuit)
 Front left courtesy light N
 Below 1V
DCTY (B5-14) - GND1 (1F-10)
 L - W-B
 Courtesy switch
(Front left door circuit)
 Front left door is open
 Below 1 V
DCTY (B5-14) - GND1 (1F-10)
 L - W-B
 Courtesy switch
(Front left door circuit)
 Front left door is closed
 10 to 14 V
RCTY (B5-16) - GND1 (1F-10)
 GR - W-B
 Courtesy switch
(Rear right door circuit)
 Rear right door is open
 Below 1 V
RCTY (B5-16) - GND1 (1F-10)
 GR - W-B
 Courtesy switch
(Rear right door circuit)
 Rear right door is closed
 Pulse generation (*1)
CLTE (B6-4) - GND1 (1F-10)
 LG - W-B
 Automatic light control sensor
(Ground circuit)
 Always
 Below 1 V
CLTS (B6-5) - GND1 (1F-10)
 B - W-B
 Automatic light control sensor
(Signal circuit)
 Ignition switch is ON
 Below 1 V
CLTS (B6-5) - GND1 (1F-10)
 B - W-B
 Automatic light control sensor
(Signal circuit)
 Ignition switch is OFF
 10 to 14 V
CLTB (B6-6) - GND1 (1F-10)
 P - W-B
 Automatic light control sensor
(Power source circuit)
 Ignition switch is OFF
 10 to 14 V
CLTB (B6-6) - GND1 (1F-10)
 P - W-B
 Automatic light control sensor
(Power source circuit)
 Ignition switch is ON
 Below 1 V
RFOG (B6-13) - GND (1F-10)
 SB - W-B
 Rear fog relay
 Rear fog light switch is OFF
 10 to 14 V
RFOG (B6-13) - GND (1F-10)
 SB - W-B
 Rear fog relay
 Rear fog light switch is ON
 Below 1 V
HF (B6-15) - GND1 (1F-10)
 Y - W-B
 Headlight dimmer switch
(FLASH signal)
 Headlight dimmer switch is OFF
 10 to 14 V
HF (B6-15) - GND1 (1F-10)
 Y - W-B
 Headlight dimmer switch
(FLASH signal)
 Headlight dimmer switch is FLASH
 Below 1 V
A (B6-16) - GND1 (1F-10)
 BR - W-B
 Light control switch
(AUTO signal)
 Light control switch is OFF
 10 to 14 V
A (B6-16) - GND1 (1F-10)
 BR - W-B
 Light control switch
(AUTO signal)
 Light control switch is AUTO
 Below 1 V
TAIL (B6-17) - GND1 (1F-10)
 O - W-B
 Light control switch
(TAIL signal)
 Light control switch is OFF
 10 to 14 V
TAIL (B6-17) - GND1 (1F-10)
 O - W-B
 Light control switch
(TAIL signal)
 Light control switch is TAIL
 Below 1 V
FFOG (B6-22) - GND1(1F-10)
 P - W-B
 Front fog light switch
(Front fog light signal)
 Fog light switch is OFF
 10 to 14 V
FFOG (B6-22) - GND1(1F-10)
 P - W-B
 Front fog light switch
(Front fog light signal)
 Fog light switch is ON
 Below 1 V
HEAD (B6-23) - GND1 (1F-10)
 V - W-B
 Light control switch
(HEAD signal)
 Light control switch is OFF
 Below 1 V
HEAD (B6-23) - GND1 (1F-10)
 V - W-B
 Light control switch
(HEAD signal)
 Light control switch is HEAD
 10 to 14 V
LSWR (B7-5) - GND1 (1F-10)
 B - W-B
 Door lock position switch
(Rear right door circuit)
 Rear right door is in unlock position
 Below 1 V
LSWR (B7-5) - GND1 (1F-10)
 B - W-B
 Door lock position switch
(Rear right door circuit)
 Rear right door is in lock position
 Pulse generation (*1)
PANL (B7-8) - GND1 (1F-10)
 GR - W-B
 Panel relay
(Center console illumination)
 Instrument panel illumination is OFF
 10 to 14 V
PANL (B7-8) - GND1 (1F-10)
 GR - W-B
 Panel relay
(Center console illumination)
 Instrument panel illumination is ON
 Below 1 V
RFGO (B7-9) - GND1 (1F-10)
 R - W-B
 Rear fog relay
(Rear fog circuit)
 Rear fog light is OFF
 10 to 14 V
RFGO (B7-9) - GND1 (1F-10)
 R - W-B
 Rear fog relay
(Rear fog circuit)
 Rear fog light is ON
 Below 1 V
CSPT (B7-14) - GND1 (1F-10)
 G - W-B
 Overhead illumination circuit
 Overhead console illumination is OFF
 10 to 14 V
CSPT (B7-14) - GND1 (1F-10)
 G - W-B
 Overhead illumination circuit
 Overhead console illumination is ON
 Below 1 V
FSPT (B7-15) - GND1 (1F-10)
 LG - W-B
 Step light, inside handle illumination circuit
 Inside handle illumination and step light are OFF
 10 to 14 V
FSPT (B7-15) - GND1 (1F-10)
 LG - W-B
 Step light, inside handle illumination circuit
 Inside handle illumination and step light are ON
 Below 1 V
MPX2 (B7-21) - GND1 (1F-10)
 O - W-B
 Multiplex communication signal
 Ignition switch is OFF
 Below 1 V
MPX2 (B7-21) - GND1 (1F-10)
 O - W-B
 Multiplex communication signal
 Ignition switch is ON
 Signal waveform
PCTY (B7-23) - GND1 (1F-10)
 L - W-B
 Courtesy switch
(Front right door circuit)
 Front right door is open
 Below 1 V
PCTY (B7-23) - GND1 (1F-10)
 L - W-B
 Courtesy switch
(Front right door circuit)
 Front right door is closed
 10 to 14 V
PCYL (B7-24) - GND1 (1F-10)
 SB - W-B
 Courtesy light
(Front right door circuit)
 Front right courtesy light is OFF
 10 to 14 V
PCYL (B7-24) - GND1 (1F-10)
 SB - W-B
 Courtesy light
(Front right door circuit)
 Front right courtesy light is ON
 Below 1 V
BCTY (B7-25) - GND1 (1F-10)
 P - W-B
 Courtesy switch
(Back door circuit)
 Back door is open
 Below 1 V
BCTY (B7-25) - GND1 (1F-10)
 P - W-B
 Courtesy switch
(Back door circuit)
 Back door is closed
 10 to 14 V
LSWP (B7-27) - GND1 (1F-10)
 Y - W-B
 Door lock position switch
(Front light door circuit)
 Front right door is in unlock position
 Below 1 V
LSWP (B7-27) - GND1 (1F-10)
 Y - W-B
 Door lock position switch
(Front light door circuit)
 Front right door is in lock position
 10 to 14 V

  1. I034772
    *1: Oscilloscope wave

    HINT:
    1. Gauge set: 5 V/DIV. 5 ms/DIV
    2. Condition: Ignition switch ON


HEADLIGHT BEAM LEVEL CONTROL ECU
I030690E01
Symbols (Terminal No.)
 Wiring Color
 Terminal Description
 Condition
 Specified Condition
GND (H17-1) - Body ground
 W-B - Body ground
 Body ground
 Always
 Below 1 V
SPDL (H17-5) - GND (H17-1)
 P - W-B
 Skid control ECU
(Vehicle speed signal)
 Drive at about 30 km/h (19 mph)
 Pulse generation (*1)
SPDR (H17-6) - GND (H17-1)
 O - W-B
 Skid control ECU
(Vehicle speed signal)
 Drive at about 30 km/h (19 mph)
 Pulse generation (*1)
HDLP (H17-7) - GND (H17-1)
 GR - W-B
 Headlight relay
(HEAD signal)
 Light control switch is OFF
 10 to 14 V
HDLP (H17-7) - GND (H17-1)
 GR - W-B
 Headlight relay
(HEAD signal)
 Light control switch is HEAD
 Below 1 V
RHG (H17-9) - GND (H17-1)
 B - W-B
 Headlight beam control actuator RH
 Always
 Below 1 V
RH3 (H17-10) - GND (H17-1)
 V - W-B
 Headlight beam control actuator RH
 Ignition switch is OFF
 Below 1 V
RH3 (H17-10) - GND (H17-1)
 V - W-B
 Headlight beam control actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
RH1 (H17-11) - GND (H17-1)
 R - W-B
 Headlight beam control actuator RH
 Ignition switch is OFF
 Below 1 V
RH1 (H17-11) - GND (H17-1)
 R - W-B
 Headlight beam control actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
RH4 (H17-12) - GND (H17-1)
 W - W-B
 Headlight beam control actuator RH
 Ignition switch is OFF
 Below 1 V
RH4 (H17-12) - GND (H17-1)
 W - W-B
 Headlight beam control actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
RH2 (H17-13) - GND (H17-1)
 BR - W-B
 Headlight beam control actuator RH
 Ignition switch is OFF
 Below 1 V
RH2 (H17-13) - GND (H17-1)
 BR - W-B
 Headlight beam control actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
IG (H17-14) - GND (H17-1)
 P - W-B
 Ignition
(Power source circuit)
 Ignition switch OFF
 Below 1 V
IG (H17-14) - GND (H17-1)
 P - W-B
 Ignition
(Power source circuit)
 Ignition switch ON
 10 to 14 V
SGR (H17-16) - GND (H17-1)
 V - W-B
 Height control sensor signal
 Always
 Below 1 V
SHR (H17-18) - SGR (H17-16)
 W - V
 Height control sensor signal
 Ignition switch OFF
 Below 1 V
SHR (H17-18) - SGR (H17-16)
 W - V
 Height control sensor signal
 Ignition switch ON, vehicle stationary and bounced
 0.5 to 4.5 V
SBR (H17-20) - SGR (H17-16)
 R - V
 Height control sensor signal
 Ignition switch OFF
 Below 1 V
SBR (H17-20) - SGR (H17-16)
 R - V
 Height control sensor signal
 Ignition switch ON
 4.5 to 5.5 V
WNG (H17-21) - GND (H17-1)
 LG - W-B
 Combination meter
(Indicator light circuit)
 Headlight beam warning light goes off
 10 to 14 V
WNG (H17-21) - GND (H17-1)
 LG - W-B
 Combination meter
(Indicator light circuit)
 Headlight beam warning light comes on
 Below 1 V
LHG (H17-22) - GND (H17-1)
 G - W-B
 Headlight beam control actuator LH
 Always
 Below 1 V
LH3 (H17-23) - GND (H17-1)
 Y - W-B
 Headlight beam control actuator LH
 Ignition switch OFF
 Below 1 V
LH3 (H17-23) - GND (H17-1)
 Y - W-B
 Headlight beam control actuator LH
 Engine running, light control switch in HEAD or DRL system ON, vehicle stationary and bounced
 Pulse generation (*2)
LH1 (H17-24) - GND (H17-1)
 O - W-B
 Headlight beam control actuator LH
 Ignition switch OFF
 Below 1 V
LH1 (H17-24) - GND (H17-1)
 O - W-B
 Headlight beam control actuator LH
 Engine running, light control switch in HEAD or DRL system ON, vehicle stationary and bounced
 Pulse generation (*2)
LH4 (H17-25) - GND (H17-1)
 R - W-B
 Headlight beam control actuator LH
 Ignition switch OFF
 Below 1 V
LH4 (H17-25) - GND (H17-1)
 R - W-B
 Headlight beam control actuator LH
 Engine running, light control switch in HEAD or DRL system ON, vehicle stationary and bounced
 Pulse generation (*2)
LH2 (H17-26) - GND (H17-1)
 L-B - W-B
 Headlight beam control actuator LH
 Ignition switch OFF
 Below 1 V
LH2 (H17-26) - GND (H17-1)
 L-B - W-B
 Headlight beam control actuator LH
 Engine running, light control switch in HEAD or DRL system ON, vehicle stationary and bounced
 Pulse generation (*2)

  1. I030993
    *1: Oscilloscope wave

    HINT:
    1. Terminal: SPDL - GND, SPDR - GND
    2. Gauge set: 5 V/DIV. 2 ms/DIV
    3. Condition: Drive at about 30 km/h (19 mph)

  2. B110637E01
    *2: Oscilloscope wave

    HINT:
    1. Terminal: RH1. RH2. RH3. RH4 - GND LH1. LH2. LH3. LH4 - GND
    2. Gauge set: 5 V/DIV. 10 ms/DIV
    3. Condition: The DRL system is on with the engine running or the light control switch is in the HEAD position when the vehicle is stationary or being bounced.

    If the value is not within the standard range, some defects on the vehicle side are possible. Inspect the fuse, wire harness and connector.


AFS ECU
E068883E04
Symbols (Terminal No.)
 Wiring Color
 Terminal Description
 Condition
 Specified Condition
E1 (A17-1) - Body ground
 W-B - Body ground
 Body ground
 Always
 Below 1 V
IG (A17-2) - E1 (A17-1)
 P - W-B
 Ignition switch
(Power source circuit)
 Ignition switch OFF
 Below 1 V
IG (A17-2) - E1 (A17-1)
 P - W-B
 Ignition switch
(Power source circuit)
 Ignition switch ON
 10 to 14 V
MSW (A17-4) - E1 (A17-1)
 LG - W-B
 AFS OFF switch
 AFS OFF switch is not pressed
 4.5 to 5.5 V
MSW (A17-4) - E1 (A17-1)
 LG - W-B
 AFS OFF switch
 AFS OFF switch is pressed
 Below 1 V
MPX1 (A17-5) - E1 (A17-1)
 P - W-B
 Multiplex communication signal
 Ignition switch ON
 Signal waveform
SS+ (A17-7) - SS- (A17-8)
 LG - Y
 Steering sensor
 Engine idling, slowly turn steering wheel
 Pulse generation
SHRL (A17-9) - SGR (A17-20)
 W - V
 Height control sensor rear RH
(Vehicle height signal)
 Ignition switch OFF
 Below 1 V
SHRL (A17-9) - SGR (A17-20)
 W - V
 Height control sensor rear RH
(Vehicle height signal)
 Ignition switch ON, vehicle stationary and bounced
 0.5 to 4.5 V
SBR (A17-10) - SGR (A17-20)
 R - V
 Height control sensor rear RH
(Vehicle height signal)
 Ignition switch OFF
 Below 1 V
SBR (A17-10) - SGR (A17-20)
 R - V
 Height control sensor rear RH
(Vehicle height signal)
 Ignition switch ON
 4.5 to 5.5 V
E1S (A17-11) - Body ground
 W-B - Body ground
 Body ground
 Always
 Below 1 V
IGS (A17-12) - E1 (A17-1)
 P - W-B
 Ignition switch
(Signal power source)
 Ignition switch OFF
 Below 1 V
IGS (A17-12) - E1 (A17-1)
 P - W-B
 Ignition switch
(Signal power source)
 Ignition switch ON
 10 to 14 V
SGR (A17-20) - E1 (A17-1)
 V - W-B
 Height control ECU
(Vehicle height signal)
 Always
 Below 1 V (*3)
SGR (A17-20) - E1 (A17-1)
 V - W-B
 Height control sensor rear RH
(Vehicle height signal)
 Always
 Below 1 V (*4)
SPDL (A18-6) - E1 (A17-1)
 P - W-B
 Skid control ECU
(Vehicle speed signal)
 Drive at about 30 km/h (19 mph)
 Pulse generation (*1)
SPDR (A18-7) - E1 (A17-1)
 O - W-B
 Skid control ECU
(Vehicle speed signal)
 Drive at about 30 km/h (19 mph)
 Pulse generation (*1)
SBLR (A18-9) - SBGR (A18-10)
 L - B
 Headlight swivel ECU RH
 Ignition switch OFF
 Below 1 V
SBLR (A18-9) - SBGR (A18-10)
 L - B
 Headlight swivel ECU RH
 Ignition switch ON
 Signal waveform
IGSR (A18-12) - E1 (A17-1)
 R - W-B
 Headlight swivel ECU RH
 Ignition switch OFF
 Below 1 V
IGSR (A18-12) - E1 (A17-1)
 R - W-B
 Headlight swivel ECU RH
 Ignition switch ON
 10 to 14 V
LR1+ (A18-13) - E1 (A17-1)
 B - W-B
 Headlight leveling actuator RH
 Ignition switch OFF
 Below 1 V
LR1+ (A18-13) - E1 (A17-1)
 B - W-B
 Headlight leveling actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
LR1- (A18-14) - E1 (A17-1)
 LG - W-B
 Headlight leveling actuator RH
 Ignition switch OFF
 Below 1 V
LR1- (A18-14) - E1 (A17-1)
 LG - W-B
 Headlight leveling actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
LR2+ (A18-15) - E1 (A17-1)
 V - W-B
 Headlight leveling actuator RH
 Ignition switch OFF
 Below 1 V
LR2+ (A18-15) - E1 (A17-1)
 V - W-B
 Headlight leveling actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
LR2- (A18-16) - E1 (A17-1)
 W - W-B
 Headlight leveling actuator RH
 Ignition switch OFF
 Below 1 V
LR2- (A18-16) - E1 (A17-1)
 W - W-B
 Headlight leveling actuator RH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
SBLL (A18-25) - SBGL (A18-26)
 P - BR
 Headlight swivel ECU LH
 Ignition switch OFF
 Below 1 V
SBLL (A18-25) - SBGL (A18-26)
 P - BR
 Headlight swivel ECU LH
 Ignition switch ON
 Signal waveform
IGSL (A18-28) - E1 (A17-1)
 Y - W-B
 Headlight swivel ECU LH
 Ignition switch OFF
 Below 1 V
IGSL (A18-28) - E1 (A17-1)
 Y - W-B
 Headlight swivel ECU LH
 Ignition switch ON
 10 to 14 V
LL1+ (A18-29) - E1 (A17-1)
 W - W-B
 Headlight leveling actuator LH
 Ignition switch OFF
 Below 1 V
LL1+ (A18-29) - E1 (A17-1)
 W - W-B
 Headlight leveling actuator LH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
LL1- (A18-30) - E1 (A17-1)
 O - W-B
 Headlight leveling actuator LH
 Ignition switch OFF
 Below 1 V
LL1- (A18-30) - E1 (A17-1)
 O - W-B
 Headlight leveling actuator LH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
LL2+ (A18-31) - E1 (A17-1)
 GR - W-B
 Headlight leveling actuator LH
 Ignition switch OFF
 Below 1 V
LL2+ (A18-31) - E1 (A17-1)
 GR - W-B
 Headlight leveling actuator LH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
LL2- (A18-32) - E1 (A17-1)
 B - W-B
 Headlight leveling actuator LH
 Ignition switch OFF
 Below 1 V
LL2- (A18-32) - E1 (A17-1)
 B - W-B
 Headlight leveling actuator LH
 Engine running, light control switch in HEAD, vehicle stationary and bounced
 Pulse generation (*2)
ESR (A18-11) - P GND (H10-4)
 GR - GR
 Headlight swivel ECU RH ground circuit
 Always
 Below 1 V
ESL (A18-11) - P GND (H7-4)
 GR - GR
 Headlight swivel ECU LH ground circuit
 Always
 Below 1 V

  1. I030993
    *1: Oscilloscope wave

    HINT:
    1. Terminal: SPDL - GND, SPDR - GND
    2. Gauge set: 5 V/DIV. 2 ms/DIV
    3. Condition: Drive at about 30 km/h (19 mph)

  2. B110637E01
    *2: Oscilloscope wave

    HINT:
    1. Terminal: LR1+. LR1-. LR2+. LH2- - GND LL1+. LL1-. LL2+. LL2- - GND
    2. Gauge set: 5 V/DIV. 10 ms/DIV
    3. Condition: The DRL system is on with the engine running or the light control switch is in the HEAD position when the vehicle is stationary or being bounced.

    If the value is not within the standard range, some defects on the vehicle side are possible. Inspect the fuse, wire harness and connector.

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