[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - ROOM LAMP - INSPECTION PROCEDURE O-1: The front or rear room lamp does not illuminate or extinguish normally. <Vehicles without keyless entry system> | PRINT PAGE / INDEX / PRIOR / NEXT

ROOM LAMP

INSPECTION PROCEDURE O-1: The front or rear room lamp does not illuminate or extinguish normally. <Vehicles without keyless entry system>
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM The ETACS-ECU operates this function in accordance with the input signals below. Ignition switch (IG1) All of the door switches Key reminder switch Driver's door lock actuator If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the door switches Malfunction of the driver's door lock actuator Malfunction of the ETACS-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. ECU check by using the SWS monitor Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal. Ignition switch: OFF ECUS TO BE CHECKED ETACS ECU OK: "OK" is displayed on the "ETACS ECU" menu. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure A-3 "Communication with ETACS-ECU is not possible ."
| Step 2. SWS monitor data list Check the input signals below, which are related to the front and rear room lamps. <Selected item> ETACS ECU Ignition switch: OFF
Item No. | Item name | Normal condition
--- | --- | ---
Item 30 | IG SW(IG1) | OFF
OK: Normal condition is displayed. Q: Is the check result normal? YES: Go to Step 3. NO: Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ."
| Step 3. Pulse check Check the input signals below, which are related to the front or rear room lamps.
System switch | Check condition
--- | ---
Key reminder switch | When the inserted ignition key is pulled out
All of the door switches | A door is opened when all the doors are closed
Driver's door lock actuator switch | When the driver's door is unlocked or locked
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Is the check result normal? All the signals are received normally.: Go to Step 4. The key reminder switch signal is not received.: Refer to Inspection Procedure P-12 "The key reminder switch signal is not received ." All the door switch signals are not received.: Refer to Inspection Procedure P-4 "All the door switch signals are not received <LH drive vehicles>." Refer to Inspection Procedure P-4 "All the door switch signals are not received <RH drive vehicles>." The driver's door lock actuator switch signal is not received.: Refer to Inspection Procedure P-15 "The driver's door lock actuator switch signal is not received <LH drive vehicles>." Refer to Inspection Procedure P-15 "The driver's door lock actuator switch signal is not received <RH drive vehicles>."
| Step 4. Connector check: D-05 front room lamp connector, D-11 rear room lamp connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair the defective connector.
| Step 5. Check the bulbs of the front and rear room lamps. Check the bulbs of the front and rear room lamps. Q: Is the check result normal? YES: Go to Step 6. NO: Replace the front or rear room lamp bulb.
| Step 6. Connector check: C-217 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the defective connector.
| Step 7. Check the wiring harness from C-217 ETACS-ECU connector terminal Nos.5 and 6 to D-05 front room lamp connector terminal Nos.2 and 1. NOTE: Prior to the wiring harness inspection, check junction block connector C-210, and repair if necessary. Q: Is the check result normal? YES: Go to Step 8. NO: Repair the wiring harness.
| Step 8. Check the wiring harness from C-217 ETACS-ECU connector terminal Nos.5 and 6 to D-11 rear room lamp connector terminal Nos.2 and 1. NOTE: Prior to the wiring harness inspection, check junction block connector C-210, and repair if necessary. Q: Is the check result normal? YES: Go to Step 9. NO: Repair the wiring harness.
| Step 9. Retest the system. Check that the front or rear room lamp illuminates and extinguishes normally. Q: Is the check result normal? YES: The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ). NO: Replace the ETACS-ECU.

[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - ROOM LAMP - INSPECTION PROCEDURE O-1: The front or rear room lamp does not illuminate or extinguish normally. <Vehicles without keyless entry system> | PRINT PAGE / INDEX / PRIOR / NEXT

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