Exterior Lights Symptom Troubleshooting - LED headlight does not come on
ElectronicCircuitSchematics-button
LED headlight does not come on
1.
DTC check 1:
DTC check 1:
?1.
Turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode.
?2.
Check for DTCs with the HDS.
DTC Description
DTC
B1081 Left Side LED Headlight Malfunction
B1082 Left Side LED Headlight Circuit Malfunction
B1083 Right Side LED Headlight Malfunction
B1084 Right Side LED Headlight Circuit Malfunction
DTC B1081, B1082, B1083 and/or B1084 indicated?
YES
Do the indicated DTC's troubleshooting.?
NO
Go to step 2.
2.
Open wire check (H/L ON SW line) 1:
Open wire check (H/L ON SW line) 1
?1.
Turn the ignition switch to LOCK (0) or press the engine start/stop button to select the OFF mode.
?2.
Disconnect the following connector.
Combination light switch 12P connector
?3.
Measure the voltage between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
Combination light switch 12P connector: disconnected
Test circuit
H/L ON SW
Test point 1
Combination light switch 12P connector No. 7 (YEL)
Test point 2
Body ground
Is there battery voltage?
YES
Go to step 3.
NO
Go to step 4.
3.
Open wire check (COMBI SW GND line):
Open wire check (COMBI SW GND line)
?1.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
Combination light switch 12P connector: disconnected
Test circuit
COMBI SW GND
Test point 1
Combination light switch 12P connector No. 6 (BLK)
Test point 2
Body ground
Is there continuity?
YES
Do the combination light switch test
.?
NO
Repair an open or high resistance in the wire.?
4.
Open wire check (H/L ON SW line) 2:
Open wire check (H/L ON SW line) 2
?1.
Disconnect the following connector.
Under-dash fuse/relay box connector N (20P)
?2.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
Combination light switch 12P connector: disconnected
Under-dash fuse/relay box connector N (20P): disconnected
Test circuit
H/L ON SW
Test point 1
Combination light switch 12P connector No. 7 (YEL)
Test point 2
Under-dash fuse/relay box connector N (20P) No. 19 (YEL)
Is there continuity?
YES
Faulty MICU;
replace the under-dash fuse/relay box
.?
NO
Repair an open or high resistance in the wire.?
Troubleshooting Start