Can Diagnostics - Subaru Legacy 2015 Technicians Reference Booklet

2015 Legacy and Outback

CAN Diagnostics

Terminating Resistors for the Main CAN are located in the ECM and BIU. In previous models, the
terminating resistors were located in the ECM and VDC.
Terminating Resistors for the Body CAN are located in the BIU and Combination Meter. Regardless
if working with the Main or Body CAN, Terminating Resistor values remain the same from previous
model years and should produce 53 – 61Ω when measured across the CAN High and CAN Low
wires.
Please note modules that have the ability to "wake" the CAN Circuit from a "sleep" mode. Failures
within these modules may cause parasitic draw (dark current) as a related symptom.
Wake up
BIU
EPS - Electric Power Steering
TCM - Transmission Control Module
SRS - Supplemental Restraint System Control Unit
RDR - Subaru Rear Vehicle Detection (SRVD)
DLC - Data Link Connector
ECM - Engine Control Module
AGAS - Active Grille Air Shutter System
BMM - Battery Monitor Module
STA - Steering Angle Sensor
EYE - Eyesight
ODS – Occupant Detection System
BIU - Body Intergrated Unit
MAIN CAN
EPS TCM
STA SRS
UART
ODS
SMT-LIN
Steering Lock
BODY CAN
Wake up Wake up
IMB SMT
BIU-LIN 1
PRG
UART
Keyless/TPMS
CAN Configuration
New Technology Training
RDR (Slave)
Wake up
VDC/EPB
EYE
RDR (Master)
ACN
UART
A/C Panel
UART
Wake up Wake up
AVN RES
AHL
SRF
PSM
IMB - Immobilizer (UK / Canada only)
PRG -Power Rear Gate
VDC/EPB - Vehicle Dynamics Control/ Electronic Parking Brake
AVN - Audio/Video/Navigation
AHL - Auto Head lights
RES - Remote Engine Start
SRF - Steering Responsive Fog Lights
MET - Combination Meter
A/C - Air Conditioning
ACN - Air Conditioning Control Module
PSM - Power Seat Memory
SMT - SMART (Keyless Access Control)
51
(Module 926)
Private CAN
DLC
ECM
ECM-LIN
AGAS
BMM
Wake up
MET
2-49
June 2014