Height Control Sensor Circuit

LIGHTING SYSTEM: Height Control Sensor Circuit

Height Control Sensor Circuit

DESCRIPTION

The headlight beam level control ECU receives the height control sensor signal from the height control sensor sub-assembly.
The headlight beam level control ECU calculates a height value from the height control signal. The voltage at the power source of the height control sensor is corrected when SHR is detected.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH
(a) Connect 3 dry cell batteries (1.5 V) in a series.
(b) Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead from the battery to terminal 3.
(c) Measure voltage between terminal 2 and terminal 3 when slowly move the link up and down.





Voltage:






NG -- REPLACE HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SENSOR REAR RH - LEVEL CONTROL ECU)





(a) Disconnect the H26 connector of height control sensor sub-assembly and the H17 connector of headlight beam level control ECU assembly.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE