[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE L-7: The headlamp(s) do not illuminate. <including high-beam indicator>PRINT PAGE / INDEX / PRIOR / NEXT
INSPECTION PROCEDURE L-7: The headlamp(s) do not illuminate. <including high-beam indicator>
 CAUTION
 Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If any of the headlamps or the high-beam indicator does not illuminate, the wiring harness connector(s), the bulb or the fuse may be defective or burned out.
POSSIBLE CAUSES
  • Malfunction of the headlamp bulbs
  • Malfunction of the high-beam indicator bulb
  • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Connector check: A-30 <low-beam, RH>, A-43 <high-beam, RH>, A-15 <low-beam, LH> or A-39 <high-beam, LH> headlamp connector or C-05 <high-beam indicator> combination meter connector
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Repair the defective connector.
Step 2. Check the bulb(s) of the headlamps or the high-beam indicator lamp.
Check the bulb(s) of the defective lamp.
Q: Is the check result normal?
YES:  Go to Step 3.
NO:  Replace the bulb(s) of the defective lamp.
Step 3. Measure the resistance at A-30 <low-beam, RH>, A-43 <high-beam, RH>, A-15 <low-beam, LH> or A-39 <high-beam, LH> headlamp connector or C-05 <high-beam indicator> combination meter connector.
  1. Disconnect the connector, and measure at the wiring harness side.
  1. Check the resistance between the lamp connector and body earth.
    • Resistance between A-15 <low-beam, left> headlamp connector terminal No.3 and body earth
    • Resistance between A-39 <high-beam, left> headlamp connector terminal No.2 and body earth
    • Resistance between A-30 <low-beam, right> headlamp connector terminal No.3 and body earth
    • Resistance between A-43 <high-beam, right> headlamp connector terminal No.2 and body earth
    • Resistance between C-05 <high-beam indicator lamp> combination meter connector terminal No.8 and body earth
    OK: 2 Ω or less
Q: Is the check result normal?
YES:  Go to Step 5.
NO:  Go to Step 4.
Step 4. Check the wiring harness from A-30 <low-beam, RH>, A-15 <low-beam, LH> headlamp connector terminal No.3 or A-43 <high-beam, RH>, A-39 <high-beam, LH> headlamp connector terminal No.2 or C-05 combination meter connector terminal No.8 <high-beam indicator lamp> to body earth.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-116 <high-beam indicator [2400 (4G64) or 2400 (4G69-vehicles for Argentina)]>, and repair if necessary.
  • Check the earth wires for open circuit.
Q: Is the check result normal?
YES:  Go to Step 7.
NO:  Repair the wiring harness.
Step 5. Connector check: A-11X front-ECU connector
Q: Is the check result normal?
YES:  Go to Step 6.
NO:  Repair the defective connector.
Step 6. Check the wiring harness from A-30 <low-beam, RH>, A-15 <low-beam,low-beam,low-beam, LH> headlamp connector terminal No.2 or A-43 <high-beam, RH>, A-39 <high-beam, LH> headlamp connector terminal No.1 or C-05 combination meter connector terminal No.9 <high-beam indicator lamp> to A-11X front-ECU connector terminal No.6 <low-beam> or No.10 <high-beam or high-beam indicator lamp>.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-116 <high-beam indicator>, and repair if necessary.
  • Check the output lines for open circuit.
Q: Is the check result normal?
YES:  Go to Step 7.
NO:  Repair the wiring harness.
Step 7. Retest the system.
Check that the headlamps and the high-beam indicator lamp illuminate/extinguish normally.
Q: Is the check result normal?
The lamps illuminate normally at both high and low beams.:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
When the headlamps do not illuminate:  Replace the headlamp socket.
When the high-beam indicator lamp does not illuminate:  Replace the combination meter.
[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP AND TAIL LAMP - INSPECTION PROCEDURE L-7: The headlamp(s) do not illuminate. <including high-beam indicator>PRINT PAGE / INDEX / PRIOR / NEXT
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