Page 2817 of 3502
FRONT FOG LAMP
LT-129
C
D
E
F
G
H
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L
MA
B
LT
Wiring Diagram — F/FOG —BKS001OU
TKWM4590E
Page 2818 of 3502
LT-130
FRONT FOG LAMP
TKWM1617E
Page 2819 of 3502
FRONT FOG LAMP
LT-131
C
D
E
F
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MA
B
LT
TKWM1618E
Page 2820 of 3502

LT-132
FRONT FOG LAMP
Terminals and Reference Values for BCMBKS001OV
CAUTION:
Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.
Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper inter-
mittent dial position. Wiper intermittent dial position can be confirmed on CONSULT-II. Refer to LT-
184, "DATA MONITOR" .
Te r -
minal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
3R/YCombination switch
input 4ONLighting, turn, wiper
switch
(Wiper intermittent
dial position 4)OFF Approx. 0 V
Lighting switch front
fog lamp ON position
(Operates only fog
lamp switch)
Approx. 1.0 V
11 V Ignition switch (ACC) ACC — Battery voltage
32 LG/BCombination switch
output 5ONLighting, turn, wiper
switch
(Wiper intermittent
dial position 4)OFF
Approx. 7.2 V
Lighting switch front
fog lamp ON position
(Operates only fog
lamp switch)
Approx. 1.0 V
38 R Ignition switch (ON) ON — Battery voltage
39 L CAN-H — — —
40 P CAN-L — — —
42 Y/R Battery power supply OFF — Battery voltage
52 B Ground ON — Approx. 0 V
55 W/B Battery power supply OFF — Battery voltage
PKIB4955J
PKIB4960J
PKIB4956J
Page 2821 of 3502

FRONT FOG LAMP
LT-133
C
D
E
F
G
H
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J
L
MA
B
LT
Terminals and Reference Values for IPDM E/RBKS001OW
How to Perform Trouble DiagnosisBKS001OX
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 2 6 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 1 3 3 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the front fog lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckBKS001OY
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
Refer to LT-129, "Wiring Diagram — F/FOG —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
36 W/R Front fog lamp (RH) ONLighting switch front fog lamp ON
position
(when lighting switch is 1ST position)OFF Approx. 0 V
ON Battery voltage
37 L/Y Front fog lamp (LH) ONLighting switch front fog lamp ON
position
(when lighting switch is 1ST position)OFF Approx. 0 V
ON Battery voltage
38 B Ground ON — Approx. 0 V
48 L CAN-H — — —
49 P CAN-L — — —
60 B Ground ON — Approx. 0V
Unit Power source Fuse and fusible link No.
BCMBatteryM
17
Ignition switch ACC or ON position 6
Ignition switch ON or START position 1
IPDM E/R Battery 88
Page 2822 of 3502
LT-134
FRONT FOG LAMP
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 >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
CONSULT-II Functions (BCM)BKS001OZ
Refer to LT- 1 8 , "CONSULT-II Functions (BCM)" .
CONSULT-II Functions (IPDM E/R)BKS001P0
Refer to LT- 2 0 , "CONSULT-II Functions (IPDM E/R)" .
Terminals Ignition switch position
(+)
(-) OFF ACC ON
BCM
connectorTerminal
M311
GroundApprox. 0 VBattery
voltageBattery
voltage
38 Approx. 0 V Approx. 0 VBattery
voltage
M442Battery
voltageBattery
voltageBattery
voltage
55Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
BCM connector Terminal
GroundContinuity
M4 52 Yes
PKIA6256E
Page 2823 of 3502

FRONT FOG LAMP
LT-135
C
D
E
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G
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L
MA
B
LT
Front Fog Lamps Do Not Illuminate (Both Sides)BKS001P1
1. PERFORM IPDM E/R ACTIVE TEST
With CONSULT-II
1. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Select “LAMPS” on “SELECT TEST ITEM” screen.
3. Touch “FOG” screen.
4. Check front fog lamp operation.
Without CONSULT-II
1. Start auto active test. Refer to PG-21, "
Auto Active Test" .
2. Check front fog lamp operation.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. PERFORM BCM SELF-DIAGNOSIS
Select “BCM” on CONSULT-II, and perform self-diagnosis for
“BCM”.
Displayed self
-diagnosis results
NO DTC>>GO TO 3.
CAN COMM CIRCUIT>>Refer to LAN-49, "
CAN System Specifica-
tion Chart" .
3. CHECK CIRCUIT BETWEEN COMBINATION SWITCH AND BCM
With CONSULT-II
1. Select “BCM” on CONSULT-II, and select “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure that “FR FOG SW” turns ON-OFF according to light-
ing switch operation.
Without CONSULT-II
Refer to LT- 1 8 5 , "
Combination Switch Inspection" .
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Check combination switch (lighting switch). Refer to LT- 1 8 5 , "
Combination Switch Inspection" . Front fog lamp should operate.
Front fog lamp should operate.
SKIA5774E
PKIA7627E
When lighting switch is in the
front fog lamp ON position: FR FOG SW ON
PKIA7598E
Page 2824 of 3502

LT-136
FRONT FOG LAMP
4. CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT FOG LAMP
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and front fog lamp (RH and LH) connectors.
3. Check continuity between IPDM E/R harness connector (A) and
front fog lamp (RH and LH) harness connectors (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK IPDM E/R OUTPUT VOLTAGE
With CONSULT-II
1. Connect IPDM E/R connector.
2. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Select “LAMPS” on “SELECT TEST ITEM” screen.
4. Touch “FOG” screen.
5. When front fog lamp is operating, check voltage between IPDM
E/R harness connector and ground.
Without CONSULT-II
1. Connect IPDM E/R connector.
2. Start auto active test. Refer to PG-21, "
Auto Active Test" .
3. When front fog lamp is operating, check voltage between IPDM E/R harness connector and ground.
OK or NG
OK >> GO TO 6.
NG >> Replace IPDM E/R. Refer to PG-28, "
Removal and Installation of IPDM E/R" .
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E836 E256 1
Ye s
LH 37 E32 1
A
GroundContinuity
Connector Terminal
RH
E836
No
LH 37
PKID0087E
Terminals
Voltage
(Approx.) (+)
(-)
IPDM E/R connector Terminal
RH
E836
Ground Battery voltage
LH 37
Terminals
Voltage
(Approx.) (+)
(-)
IPDM E/R connector Terminal
RH
E836
Ground Battery voltage
LH 37
PKID0088E