1.CHECK INDICATOR OUTPUT.
Turn the ignition switch to ON.
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Does the warning indicator turn on for three seconds?
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2.CHECK INDICATOR OUTPUT.
Leave the ignition switch to ON for 10 seconds.
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Does the warning indicator light go off?
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3.CHECK OUTPUT VOLTAGE BETWEEN AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE AND VEHICLE HEIGHT SENSOR.
1) Disconnect the vehicle height sensor connector. (rear)
2) Turn the ignition switch to ON.
3) Measure the voltage between the vehicle height sensor connector and chassis ground.
Connector & terminal
Rear vehicle height sensor
(R29) No. 3 (+) — Chassis ground (−):
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Is the voltage 5 V ±0.25 V?
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4.CHECK HARNESS BETWEEN AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE AND VEHICLE HEIGHT SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the auto headlight beam leveler control module connector.
3) Measure the continuity between the auto headlight beam leveler control module connector and the vehicle height sensor connector.
Connector & terminal
Rear vehicle height sensor
(B150) No. 21 — (R29) No. 1:
(B150) No. 19 — (R29) No. 2:
(B150) No. 12 — (R29) No. 3:
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Replace the auto headlight beam leveler control module.
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Repair the open circuit and poor contact of the connector in the harness between the auto headlight beam leveler control module and vehicle height sensor.
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5.CHECK HARNESS BETWEEN BATTERY — INDICATOR BULB — AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE.
1) Disconnect the auto headlight beam leveler control module connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between auto headlight beam leveler control module and chassis ground.
Connector & terminal
(B150) No. 6 (+) — Chassis ground (−):
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Replace the auto headlight beam leveler control module.
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6.CHECK INDICATOR BULB.
1) Turn the ignition switch to OFF.
2) Disconnect the combination meter connector.
3) Measure the continuity between combination meter body terminals.
Connector & terminal
•Gasoline engine model
(i10) No. 2 — (i10) No. 7:
•Diesel engine model
(i10) No. 2 — (i10) No. 14:
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Replace the meter case assembly.
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7.CHECK HARNESS BETWEEN AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE AND INDICATOR BULB.
1) Turn the ignition switch to OFF.
2) Disconnect the auto headlight beam leveler control module connector.
3) Disconnect the combination meter connector.
4) Measure the continuity between the auto headlight beam leveler control module connector and the combination meter connector.
Connector & terminal
•Gasoline engine model
(B150) No. 6 — (i10) No. 7:
•Diesel engine model
(B150) No. 6 — (i10) No. 14:
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Replace the auto headlight beam leveler control module.
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Repair the open circuit and poor contact of the connector in the harness between the auto headlight beam leveler control module and indicator.
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8.CHECK VEHICLE HEIGHT SENSOR OUTPUT SIGNAL.
1) Connect three dry cell batteries (1.5 V) in series.
2) Connect the (+) side of the battery to the No. 3 terminal of the sensor body, and the (−) side of the battery to terminal No. 1, to apply a voltage of 4.5 V between terminals No. 3 — No. 1.
3) With voltage applied, use a tester to measure the voltage between the No. 2 — No. 1 terminals when the sensor body link is moved slowly up and down.
Connector & terminal
Sensor body No. 2 (+) — No. 1 (−):
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Is the voltage 0.5 — 4.1 V?
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Replace the vehicle height sensor.
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9.CHECK HARNESS BETWEEN AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE AND VEHICLE HEIGHT SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the auto headlight beam leveler control module connector.
3) Measure the continuity between the auto headlight beam leveler control module connector and the vehicle height sensor connector.
Connector & terminal
Rear vehicle height sensor
(B150) No. 21 — (R29) No. 1:
(B150) No. 19 — (R29) No. 2:
(B150) No. 12 — (R29) No. 3:
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Replace the auto headlight beam leveler control module.
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Repair the open circuit and poor contact of the connector in the harness between the auto headlight beam leveler control module and vehicle height sensor.
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10.CHECK HEADLIGHT ON SIGNAL.
1) Disconnect the auto headlight beam leveler control module connector.
2) Turn the ignition switch to ON.
3) Turn the headlight switch to ON.
4) Measure the voltage between auto headlight beam leveler control module connector and chassis ground.
Connector & terminal
(B150) No. 3 (+) — Chassis ground (−):
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Repair the open circuit or poor contact of the connector in the harness between headlight relay and auto headlight beam leveler control module.
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11.CHECK HEADLIGHT ASSEMBLY (LEVELER ACTUATOR) DRIVE.
1) Set the vehicle in a parked state.
2) Turn the ignition switch to ON, and within 10 seconds, repeat OFF ⇒ ON of headlight switch 5 times.
3) Check that the headlight beam drops once, then returns to normal.
4) Then, after waiting for 30 seconds or more with the ignition ON, turn the ignition switch to OFF.
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Does the headlight beam drop down once, and then return?
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Replace the auto headlight beam leveler control module.
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12.CHECK OUTPUT VOLTAGE BETWEEN AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE AND HEADLIGHT ASSEMBLY (LEVELER ACTUATOR).
1) Disconnect the headlight assembly (leveler actuator) connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between auto headlight beam leveler control module connector and chassis ground.
Connector & terminal
(B150) No. 10 (+) — Chassis ground (−):
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Replace the headlight assembly.
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13.CHECK HARNESS BETWEEN AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE AND HEADLIGHT ASSEMBLY (LEVELER ACTUATOR).
Measure the continuity between the auto headlight beam leveler control module connector and headlight assembly (leveler actuator) connector.
Connector & terminal
• Headlight beam leveler RH
(B150) No. 10 — (F59) No. 3:
(B150) No. 17 — (F59) No. 2:
(B150) No. 23 — (F59) No. 1:
• Headlight beam leveler LH
(B150) No. 10 — (F58) No. 3:
(B150) No. 17 — (F58) No. 2:
(B150) No. 23 — (F58) No. 1:
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Replace the auto headlight beam leveler control module.
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Repair the open circuit or poor contact of the connector in the harness between headlight assembly and auto headlight leveler control module.
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