1.CHECK INDICATOR OUTPUT.
Turn the ignition switch to ON.
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Does the warning indicator illuminate for three seconds?
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2.CHECK INDICATOR OUTPUT.
Turn the ignition switch to ON and hold there for at least 10 seconds.
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Does the warning indicator light go off?
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3.CHECK OUTPUT VOLTAGE BETWEEN HEADLIGHT BEAM LEVELER CONTROL MODULE AND VEHICLE HEIGHT SENSOR.
1) Disconnect the vehicle height sensor connector. (front, rear)
2) Turn the ignition switch to ON.
3) Measure the voltage between the vehicle height sensor and chassis ground.
Connector & terminal
• Front vehicle height sensor:
(F8) No. 3 (+) — Chassis ground (−):
• 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 HEADLIGHT BEAM LEVELER CONTROL MODULE AND VEHICLE HEIGHT SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Check for continuity between headlight beam leveler control module and vehicle height sensor.
Connector & terminal
• Front vehicle height sensor:
(B150) No. 22 — (F8) No. 1:
(B150) No. 20 — (F8) No. 2:
(B150) No. 13 — (F8) No. 3:
• 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 headlight beam leveler control module.
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Repair the open circuit or poor contact of the connector in the harness between the headlight beam leveler control module and vehicle height sensor.
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5.CHECK HARNESS BETWEEN BATTERY — INDICATOR BULB — ECM.
1) Disconnect the connector of ECM.
2) Turn the ignition switch to ON.
3) Measure the voltage between the indicator bulb and chassis ground.
Connector & terminal
(B150) No. 6 (+) — Chassis ground (−):
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Replace the headlight beam leveler control module.
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6.CHECK INDICATOR BULB.
Check for open circuit or poor contact of the indicator bulb.
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Are there open circuits or poor contact?
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Replace the indicator bulb.
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7.CHECK HARNESS BETWEEN HEADLIGHT BEAM LEVELER CONTROL MODULE AND INDICATOR BULB.
1) Turn the ignition switch to OFF.
2) Disconnect the connector of ECM.
3) Disconnect the combination meter connector.
4) Check for continuity between headlight beam leveler control module and combination meter.
Connector & terminal
(B150) No. 6 — (i10) No. 7:
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Replace the headlight beam leveler control module.
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Repair the open circuit or poor contact of the connector in the harness between the 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 No. 3 terminal of the sensor unit to the (+) side of the batteries and the No. 1 terminal to the (−) side of the batteries, applying 4.5 V between 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 unit 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 HEADLIGHT BEAM LEVELER CONTROL MODULE AND VEHICLE HEIGHT SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Check for continuity between headlight beam leveler control module and vehicle height sensor.
Connector & terminal
• Front vehicle height sensor:
(B150) No. 22 — (F8) No. 1:
(B150) No. 20 — (F8) No. 2:
(B150) No. 13 — (F8) No. 3:
• 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 headlight beam leveler control module.
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Repair the open circuit or poor contact of the connector in the harness between the headlight beam leveler control module and vehicle height sensor.
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10.CHECK HEADLIGHT ON SIGNAL.
1) Disconnect the 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 the headlight relay 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 the headlight relay and headlight beam leveler control module.
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11.CHECK HEADLIGHT ASSEMBLY (LEVELING ACTUATOR) MOTOR.
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 headlight beam leveler control module.
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12.CHECK OUTPUT VOLTAGE BETWEEN HEADLIGHT BEAM LEVELER CONTROL MODULE AND HEADLIGHT ASSEMBLY (LEVELING ACTUATOR).
1) Disconnect the headlight assembly (leveling actuator) connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between the leveling actuator 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 HEADLIGHT BEAM LEVELER CONTROL MODULE AND HEADLIGHT ASSEMBLY (LEVELING ACTUATOR).
Check for continuity between the headlight beam leveler control module and headlight assembly (leveling actuator).
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 headlight beam leveler control module.
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Repair the open circuit or poor contact of the connector in the harness between the headlight assembly and headlight beam leveler control module.
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