[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > HEADLAMP > SYMPTOM PROCEDURES > HEADLAMPS (HIGH-BEAM) DO NOT ILLUMINATE.
Inspection Procedure 1: None of the high-beam headlamps illuminate.
 
 
caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
 
 
 
 
COMMENTS ON TROUBLE SYMPTOM
If both headlamps (high-beam) do not illuminate normally, the headlamp switch input circuit, headlamp relay (HI), or ETACS-ECU may have a problem.
 
 
PROBABLE CAUSES
  • Malfunction of column switch
  • Malfunction of headlamp relay (HI)
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE diagnosis code
Check if diagnosis code is set in the ETACS-ECU.
Is the diagnosis code set?
Troubleshoot the ETACS-ECU. Refer to .
Go to Step 2.
 
STEP 2. M.U.T.-IIISE data list
Use the ETACS-ECU service data to check the signal related to the operation of headlamp function.
  • Headlamp switch to ON.
 
Item No.Item nameNormal condition
15Headlamp switchON
OK: Normal condition is displayed.
Is the check result normal?
Go to Step 3.
Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 11 "The column switch signal is not received" .
 
STEP 3. Headlamp relay (HI) check
Refer to .
Is the check result normal?
Go to Step 4.
Replace the headlamp relay (HI).
 
STEP 4. Voltage measurement at the headlamp relay (HI) connector
(1) Remove the headlamp relay (HI), and measure at the relay box side.
(2) Measure the voltage between headlamp relay (HI) connector (power supply terminal) and the body earth.
OK: System voltage
Is the check result normal?
Go to Step 5.
Go to Step 6.
 
STEP 5. Check of open circuit in HHI line between ETACS-ECU connector and headlamp relay (HI) connector
Is the check result normal?
Go to Step 7.
Repair the connector(s) or wiring harness.
 
STEP 6. Check of open circuit in power supply line between fusible link and headlamp relay (HI) connector
Is the check result normal?
Go to Step 7.
Repair the connector(s) or wiring harness.
 
STEP 7. Retest the system
Check that the headlamps (high-beam) illuminate normally.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.