[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - ROOM LAMP - INSPECTION PROCEDURE O-3: Interior lamp automatic shutoff function does not work normally. <Vehicles with keyless entry system> | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE O-3: Interior lamp automatic shutoff function does not work normally. <Vehicles with 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 the interior lamp automatic shutdown function in accordance with the input signals below. Ignition switch (ACC) Ignition switch (IG1) Driver's door switch All of the door switches Interior lamp loaded signal If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective. Note that this function can be disabled/enabled by the adjustment function (default setting; enabled).
| POSSIBLE CAUSES Malfunction of the door switches Malfunction of the room lamp Malfunction of the ETACS-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Check the adjustment function. Check that the interior lamp automatic shutdown function has been enabled by using the adjustment function. Q: Is the check result normal? YES: Go to Step 2. NO: Enable the interior lamp automatic shutdown function by using the adjustment function. Refer to .
| Step 2. Check the power supply circuit. When the ignition switch is turned to the LOCK (OFF) position, check if the hazard warning lamps illuminate. Q: Is the check result normal? YES: Go to Step 3. NO: Refer to Inspection Procedure A-2 "Check the ETACS-ECU battery power supply circuit ."
| Step 3. Pulse check Check the input signals below, which are related to the front and rear room lamps.
System switch | Check condition
--- | ---
Ignition switch (ACC) | When turned from the LOCK (OFF) position to the ACC position
Ignition switch (IG1) | When turned from ACC to ON
Driver's door switch | Driver's door is opened while all the other doors are closed.
All of the door switches | A door is opened when all the doors are closed
Interior lamp loaded signal | When a load is applied through multi-purpose fuse No.18
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 ignition switch (ACC) signal is not received.: Refer to Inspection Procedure P-1 "The ignition switch (ACC) signal is not received ." The ignition switch (IG1) signal is not received.: Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ." The driver's door switch signal is not received.: Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <LH drive vehicles>." Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <RH drive vehicles>." All the door switch signals are not received.: Refer to Inspection Procedure P-12 "All the door switch signals are not received <LH drive vehicles>." Refer to Inspection Procedure P-12 "All the door switch signals are not received <RH drive vehicles>." Interior lamp loaded signal is not detected: Refer to Inspection Procedure P-18 "The interior lamp loaded signal is not detected ."
| Step 4. Retest the system. Check that the interior lamp automatic shutdown function works 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.

[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - ROOM LAMP - INSPECTION PROCEDURE O-3: Interior lamp automatic shutoff function does not work normally. <Vehicles with keyless entry system> | PRINT PAGE / INDEX / PRIOR / NEXT

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