CHASSIS ELECTRICAL ± Headlamp54-45
Inspection procedure 7
The headlamps do not switch off when the vehicle is in the
following condition and the lighting switch is moved to the
TAIL position.
Ignition switch: OFF
Passing switch: OFF
Probable cause
The cause is probably a malfunction of the daytime running lamp control unit (DRL-ECU)
circuit system. If there is a blown fuse, there may also be a short-circuit in a harness.Malfunction of fuse
Malfunction of connector
Malfunction of harness wire
Malfunction of the tail lamp relay
Malfunction of the DRL-ECU
Lighting switch check
(Refer to P.54-49.)NG
Replace
OK
Disconnect DRL-ECU connector A-10
and measure at the harness side.
Continuity between terminal No.10
and earth
OK:ContinuityNGCheck the following connectors:
A-10, A-19NG
Repair
OK
Check trouble symptoms.NGCheck the harness wire between the
DRL-ECU and the body earth. Repair,
if necessary.
OK
Tail lamp relay check
(Refer to P.54-49.)NG
Replace
OK
Disconnect the DRL-ECU connector
A-10 and measure at the harness side.
Voltage between terminal No.5 and
earth
OK: System voltageNGCheck the following connectors:
A-10, A-16, A-55XNG
Repair
OK
Check trouble symptoms.NGCheck the harness wire between the
DRL-ECU and the fusible link No.3. Re-
pair, if necessary.OK
Malfunction of the DRL-ECU
Replace
