[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE L-3: The high-beam headlamps do not illuminate normally. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE L-3: 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. Check that the headlamps operate. Check that the low-beam headlamps illuminate and extinguish normally. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure L-2 "The low-beam headlamps do not illuminate normally ."
| Step 2. Pulse check Check the input signals below, which are related to the high-beam headlamps.
System switch | Check condition
--- | ---
Ignition switch (IG1) | When turned from ACC to ON
Dimmer switch | When the dimmer switch is turned from off to on
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 3. The ignition switch (IG1) signal is not received.: Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ." The dimmer switch signal is not received.: Refer to Inspection Procedure P-5 "The column switch (lighting and turn-signal lamp switch) signal is not received ."
| 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.

[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE L-3: The high-beam headlamps do not illuminate normally. | PRINT PAGE / INDEX / PRIOR / NEXT

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