Page 2785 of 3502

HEADLAMP AIMING CONTROL (AUTO)
LT-97
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HEADLAMP AUTO AIMING CONTROL OPERATION
The height sensor is located on the right side of the rear suspension member and detects vehicle height
change by sensing the displacement of the suspension arm.
When the lighting switch is turned to the 1ST or 2ND position, power is supplied
through IPDM E/R terminal 22
to height sensor terminal 6 and
to front combination lamp RH and LH terminals 3.
At the same time, the vehicle height signal (voltage signal that corresponds to the vehicle height) is applied
through height sensor terminal 7
to front combination lamp RH and LH terminals 6.
Ground is supplied
to front combination lamp RH and LH terminals 4
through grounds E1 and E31.
CAN Communication System DescriptionBKS0041M
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 UnitBKS0041N
Refer to LAN-49, "CAN System Specification Chart" .
Page 2814 of 3502

LT-126
FRONT FOG LAMP
FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationBKS001OP
System DescriptionBKS001OQ
BCM (Body Control Module) controls front fog lamp operation.
IPDM E/R (Intelligent Power Distribution Module Engine Room) operates front fog lamp according to CAN
communication signals from BCM.
Unified meter and A/C amp. operates front fog lamp indicator according to CAN communication signals.
OUTLINE
Power is supplied at all times
to ignition relay (located in IPDM E/R), from battery direct,
through 15A fuse (No. 88, located in IPDM E/R)
to front fog lamp relay (located in IPDM E/R),
through 15A fuse (No. 71, located in IPDM E/R)
to CPU (central processing unit) located in IPDM E/R,
through 15A fuse (No. 78, located in IPDM E/R)
to CPU located in IPDM E/R,
through 50A fusible link (letter M, located in fuse and fusible link block)
to BCM terminal 55,
through 15A fuse [No. 17, located in fuse block (J/B)]
to BCM terminal 42 and
to combination meter terminal 7.
PKID0046E
Page 2815 of 3502

FRONT FOG LAMP
LT-127
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When the ignition switch is in ON or START position, power is supplied
to ignition relay (located in IPDM E/R),
through 10A fuse [No. 1, located in fuse block (J/B)]
to BCM terminal 38,
through 10A fuse [No. 14, located in fuse block (J/B)]
to combination meter terminal 8.
When the ignition switch is in ACC or ON position, power is supplied
through 10A fuse [No. 6, located in fuse block (J/B)]
to BCM terminal 11.
Ground is supplied
to BCM terminal 52 and
to combination meter terminals 10, 11 and 12
through grounds M71 and M72,
to IPDM E/R terminals 38 and 60
through grounds E1 and E31.
FRONT FOG LAMP OPERATION
When the lighting switch is in front fog lamp ON position and also in 1ST or 2ND position or AUTO position
(headlamp is ON), BCM detects FR FOG (ON) and the HEAD LAMP1, 2 (ON) or the AUTO LIGHT (ON) by
BCM combination switch reading function. And then, BCM sends front fog lamp request signal (ON) through
CAN communication.
When receiving front fog lamp request signal (ON), IPDM E/R turns ON front fog lamp relay in IPDM E/R. And
then, front fog lamp go ON. IPDM E/R supplies power
through IPDM E/R terminal 36
to front fog lamp RH terminal 1,
through IPDM E/R terminal 37
to front fog lamp LH terminal 1.
Ground is supplied
to front fog lamp RH and LH terminals 2
through grounds E1 and E31.
With power and ground supplied, the front fog lamp illuminates.
Unified meter and A/C amp. receives front fog lamp request signal (ON) through CAN communication, and
make front fog indicator go ON in combination meter.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
Refer to LT- 1 9 7 , "EXTERIOR LAMP BATTERY SAVER CONTROL" .
CAN Communication System DescriptionBKS001OR
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 UnitBKS001OS
Refer to LAN-49, "CAN System Specification Chart" .
Page 2821 of 3502

FRONT FOG LAMP
LT-133
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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 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
Page 2825 of 3502

FRONT FOG LAMP
LT-137
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6. CHECK CIRCUIT BETWEEN FRONT FOG LAMP AND GROUND
1. Turn ignition switch OFF.
2. Check continuity between front fog lamp (RH and LH) harness
connectors and ground.
OK or NG
OK >> Check front fog lamp bulb.
NG >> Repair harness or connector.
Front Fog Lamp Does Not Illuminate (One Side)BKS001P2
1. CHECK BULB
Check front fog lamp bulb which does not illuminate.
OK or NG
OK >> GO TO 2.
NG >> Replace front fog lamp bulb.
2. CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT FOG LAMP
1. Disconnect IPDM E/R connector and front fog lamp RH or LH connector.
2. Check continuity between IPDM E/R harness connector (A) and
front fog lamp RH or LH harness connector (B).
3. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK CIRCUIT BETWEEN FRONT FOG LAMP AND GROUND
Check continuity between front fog lamp RH or LH harness connec-
tor and ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-28, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector.
Front fog lamp connector Terminal
GroundContinuity
RH E256 2
Ye s
LH E32 2
PKIA6277E
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
Front fog lamp connector Terminal
Ground Continuity
RH E256 2
Ye s
LH E32 2
PKIA6277E
Page 2884 of 3502

LT-196
PARKING, LICENSE PLATE AND TAIL LAMPS
PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationBKS001QJ
System DescriptionBKS001QK
BCM (Body Control Module) controls parking, license plate and tail lamps operation.
IPDM E/R (Intelligent Power Distribution Module Engine Room) operates parking, license plate and tail
lamps according to CAN communication signals from BCM.
Unified meter and A/C amp. operates tail lamp indicator according to CAN communication signals from
BCM.
OUTLINE
Power is supplied at all times
to ignition relay (located in IPDM E/R), from battery direct,
through 15A fuse (No. 71, located in IPDM E/R)
to tail lamp relay (located in IPDM E/R) and
to CPU (central processing unit) in IPDM E/R,
through 15A fuse (No. 78, located in IPDM E/R)
to CPU in IPDM E/R,
through 50A fusible link (letter M, located in fuse and fusible link block)
to BCM terminal 55,
through 15A fuse [No. 17, located in fuse block (J/B)]
to BCM terminal 42 and
to combination meter terminal 7,
through 10A fuse [No.19, located in fuse block (J/B)]
PKID0048E