[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE K-4: The high-beam and low-beam headlamps do not illuminate when the passing switch is operated. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE K-4: The high-beam and low-beam headlamps do not illuminate when the passing switch is operated.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM If the low-beam and high-beam headlamps are normal, the passing switch input signal 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 and high-beam headlamps work normally. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to inspection procedure K-2 "The low-beam headlamps do not illuminate normally ." Or refer to inspection procedure K-3 "The high-beam headlamps do not illuminate normally ."
| Step 2. Pulse check Check the input signal from the passing switch.
System switch | Check conditions
--- | ---
Passing lamp switch | When the passing switch is turned from off to on
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Is the check result normal? YES: Go to Step 3. NO: Refer to inspection procedure P-5 "The column switch (lighting and turn-signal lamp switch) signal is not received ."
| Step 3. Retest the system. When the passing switch is turned on, check if the 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.

[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE K-4: The high-beam and low-beam headlamps do not illuminate when the passing switch is operated. | PRINT PAGE / INDEX / PRIOR / NEXT

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