Auto Light System turns
on/off the tail light and the headlight automatically according to the
brightness of the outside. It is useful to prevention of an accident by
offering a better visual field to a driver.
A driver might turns on
the tail light or the headlight when the outside have darken due to
entering a tunnel or rain, snow. After coming out of the tunnel, he should
turn off the lights.
This system makes a
driver more comfortable as turning on / off the lights according to the
brightness of the outside.
This system turns on /
off the lights automatically without operating the light mode switch when
the mode switch is set to auto mode.
This system receives a
signal the intensity of illumination sensor that can measure the change of
the brightness of the outside.
If the driver wants to
use the auto light function, sets light mode switch to auto mode, then the
lights would be turned on / off automatically according to the brightness
of the outside. If the driver doesn’t set to auto mode, he has to turn on
/ off the lights according to situation.
This code is set if a
supply voltage for autolight sensor is lesser than 4V or more than
6V.
Item
|
Detecting
Condition
|
Possible cause
|
DTC
Strategy
|
| •
|
Check a supply voatage of autolight
sensor. | |
| •
|
Power harness short to
ground. |
| •
|
Power harness short to
battery. |
| •
|
Faulty autolight
sensor. | |
Enable
Conditions
|
| •
|
Short to
battery/ground. | |
Threshold
Value
|
| •
|
4V < A supply voltage for autolight
sensor < 6V | |
Diagnostic
Time
|
|
| 1. |
Ignition "OFF", connect
scantool. |
| 2. |
Ignition "ON" & Engine "OFF", select
"Diagnostic Trouble Codes(DTC)"
mode. |
| 3. |
Monitor diagnostic trouble code and present of
trouble code. |
| 4. |
Using a scan tool, clear the DTC.
|
| 5. |
Are any DTC present?
|
|
▶ Go to
"W/Harness Inspection" procedure.
|
|
|
▶
Displaying nothing(no DTC) shows that Fault is intermittent
caused by poor contact in the part's and/or Autolight sensor
connector or was repaired and BCM memory was not
cleared.
Thoroughly check
connectors for looseness, poor connection, bending, corrosion,
contamination, deterioration, or damage.
▶ Repair or replace as necessary and then go to
"Verification of Vehicle Repair"
procedure.
|
|
| Terminal And Connector
Inspection |
| 1. |
Many malfunctions in the electrical system are
caused by poor harness(es) and terminals. Faults can also be caused
by interference from other electrical systems and mechanical or
chemical damage. |
| 2. |
Check the following conditions:
| (1) |
Check for damaged harness and terminals:
contact resistance, oxidation, bent or broken
terminals. |
| (2) |
Check for poor connection between ECM
and component: backed out terminal, improper mating, broken
locks and poor terminal to wire
connection. |
|
Using a suitable male pin to ensure that
contact in sockets is good. The pin should remain in position
when pulled
gently. | |
| 3. |
Has a problem been found?
|
|
▶ Repair as
necessary and then go to "Verification of Vehicle Repair"
procedure.
|
|
|
▶ Go to
"Power Circuit Inspection"
procedure.
|
|
| 1. |
Check supply voltage circuit
| (1) |
Ignition "ON" and Engine
"OFF". |
| (2) |
Disconnect the Autolight sensor
connector. |
| (3) |
Measure voltage between terminal "supply
voltage" of the Autolight sensor harness connector and chassis
ground.
Specification :
Approx. 5V
| |
| (4) |
Is the measured resistance within
specifications?
|
|
▶
Substitute a known-good Autolight sensor, and check for
proper operation.
If the
problem is corrected, replace Autolight sensor and then
go to "Verification of Vehicle Repair"
procedure.
|
|
|
▶ Go
to "harness Circuit Inspection"
procedure.
|
| |
| 2. |
harness Circuit Inspection
| (1) |
Ignition "ON" and Engine
"OFF". |
| (2) |
Disconnect Autolight sensor connector
and BCM main harness
connector. |
| (3) |
Measure resistance between of the
Autolight sensor harness connector and BCM harness
connector.
Specification :
Approx. 1 Ω below.
| |
| (4) |
Is the measured resistance within
specifications?
|
|
▶
Thoroughly check connectors for looseness, poor
connection, bending, corrosion, contamination,
deterioration or damage.
Repair or replace as necessary and then go to
"Verification of Vehicle Repair"
procedure.
|
|
|
▶
Check an open and short in Autolight sensor harness.
Repair as necessary and then go to " Verification of
Vehicle
Repair".
|
| |
| Verification Of Vehicle
Repair |
After a repair, it is
essential to verifying that the fault has been corrected.
| 1. |
Connect scan tool and select "Diagnostic
Trouble Codes(DTCs)" mode. |
| 2. |
Using scantool, Clear
DTC. |
| 3. |
Operate the vehicle within DTC Enable
conditions in General information. |
| 4. |
Are any DTCs present ?
|
|
▶ Go to the
applicable troubleshooting procedure.
|
|
|
▶ System is
performing to specification at this
time.
|
|
