[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > INTERIOR LAMP > SYMPTOM PROCEDURES > FRONT ROOM LAMP DOES NOT ILLUMINATE NORMALLY.
Inspection Procedure 1: The front 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 front 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), front 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 front room lamp
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
 
 
DIAGNOSIS PROCEDURE
STEP 1. Rear room lamp operation check
Check that the rear room lamp illuminates and extinguishes normally.
Is the check result normal?
Go to Step 4.
Go to Step 2.
 
STEP 2. 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 3.
 
STEP 3. M.U.T.-IIISE data list
Use the ETACS-ECU service data to check the signals related to the operation of front room lamp.
  • Turn the ignition switch to the "LOCK" (OFF) position.
  • Remove the ignition key from the ignition key cylinder.
  • Open each door.
 
Item No.Item nameNormal condition
59Driver’s door unlockON
79IG voltage1 V or less
81Driver’s door ajar switchOpen
82Passenger’s door ajar switchOpen
83Rear right door ajar switchOpen
84Rear left door ajar switchOpen
88Steering wheel lock switchKey in → Key out
OK: Normal conditions are displayed for all the items.
Is the check result normal?
Normal conditions are displayed for all the items. : Replace the ETACS-ECU.
Normal condition is not displayed for item No. 59. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 4 "The front door lock actuator (driver’s side) signal is not received" .
Normal condition is not displayed for item No. 79. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 2 "The ignition switch (IG1) signal is not received" .
Normal condition is not displayed for item No. 81. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 5 "The front door switch (driver’s side) signal is not received" .
Normal condition is not displayed for item No. 82. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 6 "The front door switch (passenger’s side) signal is not received" .
Normal condition is not displayed for item No. 83. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 7 "The rear door switch (RH) signal is not received" .
Normal condition is not displayed for item No. 84. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 8 "The rear door switch (LH) signal is not received" .
Normal condition is not displayed for item No. 88. : Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 3 "Key reminder switch signal is not received" .
 
STEP 4. Front room lamp bulb check
Check that the front room lamp bulb is normal.
Is the check result normal?
Go to Step 5.
Replace the front room lamp bulb.
 
STEP 5. Check of open or short to earth circuit in LP+1 line between the front room lamp connector and ETACS-ECU connector.
Is the check result normal?
Go to Step 6.
Repair the connector(s) or wiring harness.
 
STEP 6. Check of open or short to earth circuit in RLP- line between the front room lamp connector and ETACS-ECU connector.
Is the check result normal?
Go to Step 7.
Repair the connector(s) or wiring harness.
 
STEP 7. Check of open circuit in earth line between the front room lamp connector and body earth.
Is the check result normal?
Replace the front room lamp, and then go to Step 8.
Repair the connector(s) or wiring harness.
 
STEP 8. Retest the system
Check that the front 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.