[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE K-5: The headlamp automatic shutdown function does not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE K-5: The headlamp automatic shutdown function does not work normally.
| 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) Driver's door switch Tail lamp switch Headlamp switch If this function does not work normally, these input signal circuit(s), the front-ECU or the ETACS-ECU may be defective. Note that this function can be disabled/enabled by the customize function (default setting; enabled (D)). In order to change the setting, the SWS monitor is required.
| POSSIBLE CAUSES Malfunction of the driver's door switch Malfunction of the front-ECU Malfunction of the column switch Malfunction of the ETACS-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Check that the headlamps operate. Check that the low-beam and high-beam headlamps work normally. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the headlamps. Refer to trouble symptom chart .
| Step 2. Pulse check Check the input signals below, which are related to the headlamp automatic shutdown function.
System switch | Check conditions
--- | ---
Ignition switch (IG1) | When turned from ACC to ON
Tail lamp switch | When the lighting switch is turned to the TAIL position
Driver's door switch | When the driver's door is opened
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Are the check result normal? All the signals are received normally.: Go to Step 3. The ignition switch (IG1) signal is not received.: Refer to inspection procedure P-2 "The ignition switch (IG1) signal is not received" . The tail lamp switch signal is not received.: Refer to inspection procedure P-5 "The column switch (lighting and turn-signal lamp switch) 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" .
| Step 3. Check the SWS monitor customized function. Use the SWS monitor customize function to confirm that "H/L AUTO-CUT " is set to other than "W/O FUNCTION". CAUTION The SWS monitor must be used in order to confirm and change that setting. Use the SWS monitor to confirm and/or change the customized function. Q: Is the check result normal? YES: Go to Step 4. NO: Use the SWS monitor customize function to se the "H/L AUTO-CUT " to other than "W/O FUNCTION" (Refer to GROUP 54C - Adjustment function ).
| Step 4. Retest the system. Replace the ETACS-ECU, and then check that the headlamp automatic shutdown function works normally. Replace the ETACS-ECU. Check that the headlamp 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 front-ECU.

[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE K-5: The headlamp automatic shutdown function does not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

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