Automatic Headlight

LIGHTING (EXT): AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM: TERMINALS OF ECU

1. CHECK HEADLIGHT LEVELING ECU ASSEMBLY

(a) Disconnect the A34 headlight leveling ECU assembly connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage





Standard Resistance





If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the A34 headlight leveling ECU assembly connector.

(d) Measure the resistance and voltage according to the value(s) in the table below.

Standard Resistance





Standard Voltage





If the result is not as specified, the headlight leveling ECU assembly may have a malfunction.

(1) Waveform 1