[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE L-4: The high-beam headlamps do not illuminate normally. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE L-4: The high-beam headlamps do not illuminate normally.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM If the high-beam headlamps do not illuminate, the dimmer switch input circuit or the front-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the column switch Malfunction of the front-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 column switch (column-ECU) and the front-ECU and the SWS communication lines are normal. Ignition switch: OFF ECUS TO BE CHECKED COLUMN ECU FRONT ECU OK: "OK" are displayed for all the items Q: Is the check result normal? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "COLUMN ECU" menu.: Refer to Inspection Procedure A-2 "Communication with column switch (column-ECU) is not possible ." "NG" is displayed on the "FRONT ECU" menu.: Refer to Inspection Procedure A-4 "Communication with front-ECU is not possible ."
| Step 2. Function diagnosis by using the SWS monitor Check the SWS communication signal, which are related to the high-beam headlamps. <Selected item> LIGHTING - HEADLAMP HI Ignition switch: ON Lighting switch: HEAD Dimmer switch: from OFF to ON, and then to OFF again
Item No. | Item name | Normal condition
--- | --- | ---
Item 00 | HEADLAMP SW | ON
Item 02 | DIMMER SW | from OFF to ON, and then to OFF again ("ON" should be displayed when the dimmer switch is operated)
Item 03 | PASSING SW | OFF
Item 30 | IG SW(IG1)* | ON
Item 35 | HD AUTO-CUT* | OFF
Item 70 | FRONT ECU ACK | NORMAL ACK
NOTE: * : Except for Australia OK: Normal conditions displayed for all the items Q: Is the check result normal? Normal conditions are displayed for all the items.: Go to Step 3. Normal condition is not displayed for item 00, 02 or 03.: Refer to Inspection Procedure P-5 "The column switch (lighting and turn-signal lamp switch) signal is not received ." Normal condition is not displayed for item No.30.: Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ." Normal condition is not displayed for item No.35.: Refer to Inspection Procedure L-6 "The headlamp automatic shutdown function does not work normally ." Normal condition is not displayed for item No.70.: Replace the front-ECU.
| Step 3. Retest the system. Check that the high-beam headlamps illuminate 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.

[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE L-4: The high-beam headlamps do not illuminate normally. | PRINT PAGE / INDEX / PRIOR / NEXT

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