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Home >> Subaru >> 2017 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Blind Spot Detection/Rear Cross Traffic Alert System (Diagnostics)) >> Control Module I/O Signal >> Electrical Specification >> Radar Sensor

Radar Sensor

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
G13627579Courtesy of SUBARU OF AMERICA, INC.
Terminal No. Contents Measuring condition Standard
Radar sensor LH (master) Radar sensor RH (slave)
(L107) or (R104) No. 1 ←→ Chassis ground Private CAN H Private CAN H Always 1 MΩ or more
(L107) or (R104) No. 2 ←→ Chassis ground Vehicle CAN H - Always 1 MΩ or more
(L107) or (R104) No. 3 - - - -
(L107) or (R104) No. 4 ←→ Chassis ground Left mirror LED output Right mirror LED output
  • Ignition switch OFF → ON
  • BSD/RCTA OFF button OFF → ON (while touching the button)
  • When indicator is ON: 2.5 - 10.5 V
  • When indicator is blinking: 0 ←→ 2.5 - 10.5 V
  • When indicator is OFF: Less than 1 V
(L107) or (R104) No. 5 ←→ Chassis ground Ignition power supply Ignition power supply Ignition switch OFF → ON Less than 1 V → 9 - 16 V
(L107) or (R104) No. 6 ←→ Chassis ground Private CAN L Private CAN L Always 1 MΩ or more
(L107) or (R104) No. 7 ←→ Chassis ground Vehicle CAN L - Always 1 MΩ or more
(L107) or (R104) No. 8 - - - -
(L107) or (R104) No. 9 - - - -
(L107) or (R104) No. 10 ←→ Chassis ground GND GND Always Less than 1 Ω