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Home >> Subaru >> 2017 >> WRX STI >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Auto Headlight Beam Leveler System (Diagnostics) >> Control Module I/O Signal >> Electrical Specification >> Auto Headlight Beam Leveler Control Module
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Auto Headlight Beam Leveler Control Module

Fig 1: Auto Headlight Beam Leveler Control Module Connector Terminal - Control Module I/O Signal
G08549445Courtesy of SUBARU OF AMERICA, INC.
Contents Terminal No. Measuring condition Standard
IG power supply 1 ↔ Chassis ground Ignition switch ON 8 - 16 V
GND 2 ↔ Chassis ground Always Less than 1 Ω
Rr vehicle height sensor GND 3 ↔ Chassis ground Always Less than 1 Ω
RH headlight malfunction signal 5 ↔ Chassis ground Always 1 MΩ or more
Leveling actuator power supply 10 ↔ Chassis ground Ignition switch ON 10 - 16 V
Leveling actuator GND 11 ↔ Chassis ground Always Less than 1 Ω
Rr vehicle height sensor power supply 12 ↔ 3 Ignition switch ON 4.75 - 5.25 V
LH headlight malfunction signal 16 ↔ Chassis ground Always 1 MΩ or more
Leveling actuator signal 17 ↔ Chassis ground Headlight off → on Less than 1 V → 1.0 - 14.4 V (for 17 seconds)
Headlight on, no vehicle height change → change and hold vehicle height for 3 seconds or more
Rr sensor signal 19 ↔ Chassis ground IG ON (with no passenger, no load and vehicle stopped) Approx. 2.5 V (changes according to vehicle condition)
CAN-H 23 Cannot be measured (CAN communication line) -
CAN-L 24 Cannot be measured (CAN communication line) -