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LT-72
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PARKING, LICENSE PLATE AND TAIL LAMPS
PARKING, LICENSE PLATE AND TAIL LAMPS
Component Parts and Harness Connector LocationINFOID:0000000001704447
System DescriptionINFOID:0000000001704448
The control of the parking, license plate and tail lamp operation is dependent upon the position of lighting
switch. When the lighting switch is placed in the 1ST position, the BCM (body control module) receives input
signal requesting the parking, license plate and tail lamps to illuminate. This input signal is communicated to
the IPDM E/R (intelligent power distribution module engine room) via the CAN communication lines. The CPU
(central processing unit) located in the IPDM E/R controls the tail lamp relay coil. This relay, when energized,
directs power to parking, license plate and tail lamps, which then illuminate.
Power is supplied at all times
• to ignition relay located in IPDM E/R,
• to tail lamp relay located in IPDM E/R,
• through 15A fuse (No. 52, located in IPDM E/R) and
• through 20A fuse (No. 53, located in IPDM E/R)
• to the CPU located in the IPDM E/R,
• through 40A fusible link (letter g , located in fuse and fusible link block)
• to BCM terminal 70,
• through 10A fuse [No. 8, located in fuse block (J/B)],
• to BCM terminal 57.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38,
• to ignition relay located in IPDM E/R and
• through the ignition relay
• to the CPU of the IPDM E/R.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 20, located in fuse block (J/B)]
• to BCM terminal 11.
Ground is supplied
• to BCM terminal 67
• through grounds M20 and M61,
• to IPDM E/R terminals 59 and 39
• through grounds E15 and E24.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position, the BCM receives an input signal requesting parking,
license plate and tail lamps to illuminate. This input signal is communicated to the IPDM E/R via the CAN com-
munication lines. The CPU, located in the IPDM E/R, controls the tail lamp relay coil. When energized, the tail
lamp relay directs power
• through 10A fuse (No. 37, located in IPDM E/R),
• through IPDM E/R terminal 26
• to front combination lamp LH terminal 6, and
• through IPDM E/R terminal 27
1. IPDM E/R E45, E46 and E48 2. BCM M18 and M20 (view with glove
box removed)3. Combination switch (lighting switch)
M28
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LT-73
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• to front combination lamp RH terminal 6,
• through IPDM E/R terminal 28
• to rear combination lamp LH terminal 4 and
• to license plate lamp LH and RH terminal 1,
• through IPDM E/R terminal 29
• to rear combination lamp RH terminal 4.
Ground is supplied
• to front combination lamp LH and RH terminal 7
• through grounds E15 and E24,
• to rear combination lamp LH terminal 1 and
• to license plate lamp LH and RH terminal 2
• through grounds B7 and B19, and
• to rear combination lamp RH terminal 1
• through grounds B117, B132 (all models) and D402 (with hatchback).
With power and ground supplied, parking, license plate and tail lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "System Description" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST (or 2ND) position and the ignition switch is turned
from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the parking, license and tail lamps remain illuminated for 5 minutes, then the parking,
license plate and tail lamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-III.
CAN Communication System DescriptionINFOID:0000000001704449
Refer to LAN-6, "System Description" .
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LT-74
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
Schematic
INFOID:0000000001704450
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PARKING, LICENSE PLATE AND TAIL LAMPS
LT-75
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Wiring Diagram - TAIL/L -INFOID:0000000001704451
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LT-76
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
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PARKING, LICENSE PLATE AND TAIL LAMPS
LT-77
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Hatchback
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LT-78
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PARKING, LICENSE PLATE AND TAIL LAMPS
Sedan
Terminal and Reference Value for BCMINFOID:0000000001704452
Refer to BCS-11, "Terminal and Reference Value for BCM" .
Terminal and Reference Value for IPDM E/RINFOID:0000000001704453
Refer to PG-23, "Terminal and Reference Value for IPDM E/R" .
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How to Proceed with Trouble DiagnosisINFOID:0000000001704454
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-72, "
System Description" .
3. Perform the preliminary check. Refer to LT-79, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of the malfunction.
5. Do the parking, license plate and tail lamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. Inspection End.
Preliminary CheckINFOID:0000000001704455
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection" .
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR IPDM E/R
Refer to PG-25, "IPDM E/R Power/Ground Circuit Inspection" .
CONSULT-III Function (BCM)INFOID:0000000001704456
Refer to LT- 11 , "CONSULT-III Function (BCM)" .
CONSULT-III Function (IPDM E/R)INFOID:0000000001704457
Refer to LT-12, "CONSULT-III Function (IPDM E/R)" .
Parking, License Plate and Tail Lamps Do Not IlluminateINFOID:0000000001704458
1.CHECK TAIL LAMP FUSE
Inspect tail lamp 10A fuse (No. 37, located in IPDM E/R).
OK or NG
OK >> GO TO 2.
NG >> Repair harness.
2.CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-III
1. Select “BCM” on CONSULT-III. Select “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen. Make sure “LIGHT SW 1ST” turns ON-OFF
linked with operation of lighting switch.
Without CONSULT-III
Refer to LT-63, "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Check combination switch (lighting switch). Refer to LT-63, "
Combination Switch Inspection" .
3.ACTIVE TEST
With CONSULT-III
1. Select “IPDM E/R” on CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Select “EXTERNAL LAMPS” on “SELECT TEST ITEM” screen.
3. Touch “TAIL” on "ACTIVE TEST" screen.
4. Make sure parking, license plate and tail lamps operate.
Without CONSULT-IIIWhen lighting switch is 1ST
position: LIGHT SW 1ST ON
Parking, license plate and tail lamps should oper-
ate.