DAYTIME LIGHT SYSTEM
EXL-17
< FUNCTION DIAGNOSIS >
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DAYTIME LIGHT SYSTEM
System DiagramINFOID:0000000001527654
System DescriptionINFOID:0000000001527655
The daytime light system operates the front clearance lamps, rear tail lamps and license plate lamps. The
BCM monitors the engine running status and lighting switch (combination switch) signal to determine whether
the daytime light system should be activated. With the engine running and the lighting switch OFF, the BCM
sends a signal via CAN communication to the IPDM E/R (Intelligent Power Distribution Module Engine Room)
to activate the headlamp low relay and the daytime light relay. The IPDM E/R supplies ground to the headlamp
low relay coil and daytime light relay coil which then energize to send power to the low beam headlamps, front
clearance lamps, rear tail lamps and license plate lamps.
Component Parts LocationINFOID:0000000001527656
AWLIA0027GB
1. IPDM E/R E46, E47, E48 2. BCM M16, M17, M18, M19 (view with
glove box removed)3. Combination switch M28
4. Combination meter M24 5. Daytime light relay E67
ALLIA0332ZZ
PRECAUTIONS
STC-37
< PRECAUTION >[EPS]
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Check if the connection of steering column assembly and steering gear assembly is proper (there is
not looseness of mounting bolts, damage of rods, boots or sealants, and leakage of grease, etc).
Check if the wheel alignment is adjusted properly.
Check if there is any damage or modification to suspension or body resulting in increased weight or
altered ground clearance.
Check if installation conditions of each link and suspension are proper.
Check if the battery voltage is proper
Check connection conditions of each connector are proper.
Before connecting or disconnecting the EPS control unit har-
ness connector, turn ignition switch “OFF” and disconnect
battery ground cable. Because battery voltage is applied to
EPS control unit even if ignition switch is turned “OFF”.
When connecting or disconnecting pin connectors into or
from EPS control unit, take care not to damage pin terminals
(bend or break).
When connecting pin connectors, make sure that there are no
bends or breaks on EPS control unit pin terminal.
Before replacing EPS control unit, perform EPS control unit
input/output signal inspection and make sure whether EPS
control unit functions properly or not. Refer to STC-22, "
EPS
Control Unit Input/Output Signal Reference Value".
SEF289H
SEF291H
SDIA1848E