HEADLAMP - Headlamp Aiming Control - Trouble diagnosis - Models with Daytime Light System
EL-6013flowchartTrouble diagnosis - Models with Daytime Light System
NOTE
SYMPTOM: Headlamp aiming does not operate.
Headlamp aiming trouble diagnosis (with Daytime Light System)
1
INSPECTION START
2
CHECK DAYTIME LIGHT SYSTEM. 1) Start engine. 2) Make sure that headlamp low beam, clearance, tail, license and instrument illumination lamps are turned ON.
NG
Check daytime light system. (Refer to "HEADLAMP - Daytime Light System".)
OK
3
CHECK POWER SUPPLY (For headlamp aiming switch). 1) Stop engine. 2) Disconnect headlamp aiming switch connector. 3) Turn lighting switch to 1st position. 4) Check if 12 - 14 volts exist between headlamp aiming switch harness connector terminal 1 and ground.
NG
Check the following: Harness connectors (M148, E70), Fuse block connectors (M139, E56), Harness continuity between daytime light control unit and headlamp aiming switch, Battery charge condition. If NG, recharge battery, repair or replace harness or connectors.
Check the following: Harness connectors (M148, E70), Fuse block connectors (M139, E56), Harness continuity between daytime light control unit and headlamp aiming switch, Battery charge condition. If NG, recharge battery, repair or replace harness or connectors.
OK
4
CHECK GROUND CIRCUIT (For headlamp aiming switch). 1) Turn lighting switch to OFF position. 2) Check harness continuity between headlamp aiming switch harness connector terminal 2 and body ground. Continuity exists ... OK
NG
Repair harness between headlamp aiming switch and body ground.
OK
5
CHECK POWER SUPPLY (For aiming motor units). 1) Disconnect aiming motor units connectors. 2) Turn lighting switch to 1st position. 3) Check voltage between aiming motor units harness connector terminal 3 and ground. Voltage: Battery voltage
NG
Check the following: Harness connectors (M148, E69), Harness continuity between lighting switch and aiming motor units. If NG, repair or replace harness or connectors.
Check the following: Harness connectors (M148, E69), Harness continuity between lighting switch and aiming motor units. If NG, repair or replace harness or connectors.
OK
A (continues on next page)