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LT-92
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2004 November 2004 FX35/FX45
Connected form BCM terminals 45 and 46 to rear combination lamp control unit terminals 4 and 5,
rear turn signal (LED) turns on
through rear combination lamp control unit terminal 11
to rear combination lamp LH terminal 3
through rear combination lamp LH terminal 4
to rear combination lamp control unit terminal 10
through rear combination lamp control unit terminal 9
to rear combination lamp RH terminal 3
through rear combination lamp RH terminal 4
to rear combination lamp control unit terminal 8.
BCM sends signal to unified meter and A/C amp. through CAN communication lines, and turns on turn signal
indicator lamp with combination meter.
With power and input supplied, the BCM controls the flashing of the hazard warning lamps when keyfob is
used to activate the remote control entry system.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
CAN Communication System DescriptionAKS007CX
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAKS0080W
Refer to LAN-6, "CAN Communication Unit" .
Page 3648 of 4449
TURN SIGNAL AND HAZARD WARNING LAMPS
LT-93
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2004 November 2004 FX35/FX45
SchematicAKS007CZ
TKWM0621E
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LT-94
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — TURN —AKS007D0
TKWM0820E
Page 3650 of 4449
TURN SIGNAL AND HAZARD WARNING LAMPS
LT-95
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E
F
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L
MA
B
LT
Revision: 2004 November 2004 FX35/FX45
TKWH0225E
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LT-96
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2004 November 2004 FX35/FX45
TKWM0624E
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TURN SIGNAL AND HAZARD WARNING LAMPS
LT-97
C
D
E
F
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H
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L
MA
B
LT
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Values for BCMAKS007IB
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
2 GY Combination switch input 5 ONLighting, turn, wiper OFF
Wiper dial position 4
3 L/B Combination switch input 4 ONLighting, turn, wiper OFF
Wiper dial position 4
4 PU/W Combination switch input 3 ONLighting, turn, wiper OFF
Wiper dial position 4
5 Y/R Combination switch input 2
ONLighting, turn, wiper OFF
Wiper dial position 4
6 SB Combination switch input 1
11 LG/R Ignition switch (ACC) ACC — Battery voltage
29 G/Y Hazard switch signal OFF Hazard switchON Approx. 0V
OFF Battery voltage
32 GY/R Combination switch output 5 ONLighting, turn, wiper OFF
Wiper dial position 4
33 G Combination switch output 4 ONLighting, turn, wiper OFF
Wiper dial position 4
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
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LT-98
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2004 November 2004 FX35/FX45
How to Proceed With Trouble DiagnosisAKS007D2
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 8 9 , "
System Description" .
3. Perform.preliminary check. Refer to LT- 9 9 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do turn signal and hazard warning lamps operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. INSPECTION END
34 W/B Combination switch output 3 ONLighting, turn, wiper OFF
Wiper dial position 4
35 W/G Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 W/R Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 L CAN−H—— —
40 R CAN−L—— —
42 L/R Battery power supply OFF — Battery voltage
45 G/W Turn signal (left) ONCombination
switchTurn le ft
ON
46 BR/W Turn signal (right) ONCombination
switchTurn right
ON
49 B Ground ON — Approx. 0V
52 B Ground ON — Approx. 0V
55 G Battery power supply OFF — Battery voltage Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
SKIA5291E
SKIA5292E
SKIA3009J
SKIA3009J
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TURN SIGNAL AND HAZARD WARNING LAMPS
LT-99
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LT
Revision: 2004 November 2004 FX35/FX45
Preliminary CheckAKS007D3
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check fuses for blown-out.
Refer to LT-94, "Wiring Diagram — TURN —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open or short between BCM and
fuse.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Check ground circuit harness.
Unit Power source Fuse and fusible link No.
BCMBatteryM
22
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
Rear combination lamp control unit Battery 20
Terminals Ignition switch position
(+)
(-) OFF ACC ON
ConnectorTerminal
(Wire color)
M311 (LG/R)
Ground0VBattery
voltageBattery
voltage
38 (W/L) 0V 0VBattery
voltage
M442 (L/R)Battery
voltageBattery
voltageBattery
voltage
55 (G)Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
Terminals
Continuity
Connector Terminal (Wire color)
M449 (B)
Ground Yes
52 (B)
PKIA5191E