[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > INTERIOR LAMP > SYMPTOM PROCEDURES > REAR ROOM LAMP DOES NOT ILLUMINATE NORMALLY.
Inspection Procedure 2: The rear room lamp does not illuminate normally.
 
 
caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
 
 
 
 
OPERATION
The ETACS-ECU illuminates and extinguishes the rear room lamp in accordance with the input signals below.
  • Ignition switch (IG1)
  • Key reminder switch
  • Door switches
  • Front door lock actuator (driver’s side)
 
 
COMMENTS ON TROUBLE SYMPTOM
If this does not work normally, the above switch input circuit(s), rear room lamp, or ETACS-ECU may have a problem.
 
 
PROBABLE CAUSES
  • Malfunction of the key reminder switch
  • Malfunction of door switch
  • Malfunction of the front door lock actuator (driver’s side)
  • Malfunction of rear room lamp
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
 
 
DIAGNOSIS PROCEDURE
STEP 1. Front room lamp operation check
Check that the front room lamp illuminates and extinguishes normally.
Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure 1 "The front room lamp does not illuminate normally." .
 
STEP 2. Rear room lamp bulb check
Check that the rear room lamp bulb is normal.
Is the check result normal?
Go to Step 3.
Replace the rear room lamp bulb.
 
STEP 3. Check of open or short to earth circuit in LP+1 line between the rear room lamp connector and ETACS-ECU connector.
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.
 
STEP 4. Check of open or short to earth circuit in RLP- line between the rear room lamp connector and ETACS-ECU connector.
Is the check result normal?
Go to Step 5.
Repair the connector(s) or wiring harness.
 
STEP 5. Check of open circuit in earth line between the rear room lamp connector and body earth.
Is the check result normal?
Replace the rear room lamp, and then go to Step 6.
Repair the connector(s) or wiring harness.
 
STEP 6. Retest the system
Check that the rear room lamp illuminates/extinguishes 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.