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LT-10
HEADLAMP (FOR USA)
Revision: August 20072004 QX56
Wiring Diagram — H/LAMP —EKS0079T
WKWA3107E
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HEADLAMP (FOR USA)
LT-11
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: August 20072004 QX56
WKWA1193E
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LT-12
HEADLAMP (FOR USA)
Revision: August 20072004 QX56
WKWA1194E
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HEADLAMP (FOR USA)
LT-13
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: August 20072004 QX56
WKWA3108E
Page 2445 of 3371
LT-14
HEADLAMP (FOR USA)
Revision: August 20072004 QX56
Terminals and Reference Values for BCMEKS0079U
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
2 SB Combination switch input 5 ONLighting, turn, wiper OFF
Wiper dial position 4
3 G/Y Combination switch input 4 ONLighting, turn, wiper OFF
Wiper dial position 4
4 Y Combination switch input 3 ONLighting, turn, wiper OFF
Wiper dial position 4
5 G/B Combination switch input 2
ONLighting, turn, wiper OFF
Wiper dial position 4
6 V Combination switch input 1
32 R/G Combination switch output 5 ONLighting, turn, wiper OFF
Wiper dial position 4
33 R/Y Combination switch output 4 ONLighting, turn, wiper OFF
Wiper dial position 4
34 L Combination switch output 3 ONLighting, turn, wiper OFF
Wiper dial position 4
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
Page 2446 of 3371

HEADLAMP (FOR USA)
LT-15
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: August 20072004 QX56
Terminals and Reference Values for IPDM E/REKS0079V
How to Proceed With Trouble DiagnosisEKS0079W
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 6 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 1 6 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
35 O/B Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 R/W Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 W CAN-H — — —
40 R CAN-L — — —
67 B Ground ON — 0V
70 W/B Battery power supply (fusible
link)OFF
—Battery voltage Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
SKIA5292E
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
38 B Ground ON — 0V
39 W CAN-H — — —
40 R CAN-L — — —
52 L Headlamp low (LH) ONLighting switch
2ND positionOFF 0V
ON Battery voltage
54 R/Y Headlamp low (RH) ONLighting switch
2ND positionOFF 0V
ON Battery voltage
55 G Headlamp high (LH) ONLighting switch
HIGH or PASS
positionOFF 0V
ON Battery voltage
56 L/W Headlamp high (RH) ONLighting switch
HIGH or PASS
positionOFF 0V
ON Battery voltage
59 B Ground ON — 0V
Page 2447 of 3371
LT-16
HEADLAMP (FOR USA)
Revision: August 20072004 QX56
Preliminary CheckEKS0079X
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 1 0 , "
Wiring Diagram — H/LAMP —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fus-
ible link.
Unit Power source Fuse No.
BCMBattery f
Ignition switch ON or START position 59
IPDM E/R Battery34
35
40
41
53
BCM
(–)Ignition switch position
(+)
OFF ACC ON
ConnectorTe r m i n a l
(wire color)
M18 38 (W/L)
Ground0V 0VBattery
voltage
M20 70 (W/B)Battery
voltageBattery
voltageBattery
voltage
WKIA1436E
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HEADLAMP (FOR USA)
LT-17
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: August 20072004 QX56
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> Inspection End.
NG >> Check ground circuit harness.
BCM
Continuity
ConnectorTe r m i n a l
(wire color)
M20 67 (B) Ground Yes
LIIA0915E