Electrical Specification

2014 Subaru Impreza Sport LimitedSECTION Electrical Specification
  • Combination meter
    Fig 1: Identifying Electrical Control Module I/O Signal (Combination Meter)
    G08316651Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Description
    1 Immobilizer/security indicator
    2 Charge warning light
    3 Oil pressure warning light
    4 RH turn signal indicator
    6 LH turn signal indicator
    8 Auto headlight beam leveler warning light
    15 Driver's seat belt switch
    16 Passenger's seat belt switch
    20 Ignition power supply
    21 Washer fluid level sensor
    23 Brake fluid level switch
    25 Fuel level sensor
    27 Ambient sensor
    28 UART (MFD)
    30 Pedestrian alert system
    32 CAN communication line (-)
    33 CAN communication line (+)
    36 Ambient sensor GND
    37 Fuel level sensor GND
    38 GND
    39 Back-up ignition power supply
    40 Battery power supply
    Terminal No. Item Measuring condition Standard
    1 ←→ Chassis ground Voltage Security/immobilizer indicator light off β†’ on 0 V β†’ 10 - 14 V
    2 ←→ Chassis ground Voltage Charge warning light off β†’ on 0 V β†’ 10 - 14 V
    3 ←→ Chassis ground Voltage Oil pressure warning light off β†’ on 0 V β†’ 10 - 14 V
    4 ←→ Chassis ground Voltage RH turn indicator off β†’ on 0 V β†’ 10 - 14 V
    6 ←→ Chassis ground Voltage LH turn indicator off β†’ on 0 V β†’ 10 - 14 V
    8 ←→ Chassis ground Voltage Auto headlight beam leveler warning light off β†’ on 0 V β†’ 10 - 14 V
    15 ←→ Chassis ground Resistance Driver's seat belt switch ON Less than 1 Ξ©
    16 ←→ Chassis ground Resistance Passenger's seat belt switch ON Less than 1 Ξ©
    20 ←→ Chassis ground Voltage IG OFF β†’ ON 0 V β†’ 10 - 14 V
    21 ←→ Chassis ground - Washer fluid level sensor -
    23 ←→ Chassis ground - Brake fluid level switch -
    25 ←→ 37 Resistance Fuel level sensor 10 - 600 Ξ©
    27 ←→ 36 Resistance Ambient sensor 1 - 35 kΞ©
    28 (UART) ←→ Chassis ground - Cannot be measured -
    32 (CAN-) ←→ Chassis ground - Cannot be measured -
    33 (CAN+) ←→ Chassis ground - Cannot be measured -
    34 ←→ Chassis ground Resistance Always Less than 1 Ξ©
    35 ←→ Chassis ground Resistance Always Less than 1 Ξ©
    36 ←→ Chassis ground Resistance Always Less than 1 Ξ©
    37 ←→ Chassis ground Resistance Always Less than 1 Ξ©
    38 ←→ Chassis ground Resistance Always Less than 1 Ξ©
    39 ←→ Chassis ground Resistance Always Less than 1 Ξ©
    40 ←→ Chassis ground Voltage Always 10 - 14 V
  • MFD
    Fig 2: Identifying Electrical Control Module I/O Signal (MFD)
    G08316652Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Description
    1 Battery power supply
    2 GND
    3 Ignition power supply
    4 Steering switch communication line (-)
    5 CAN communication line (-)
    6 CAN communication line (+)
    7 -
    8 -
    9 UART (Meter)
    10 Passenger's airbag ON
    11 Passenger's airbag OFF
    12 Steering switch communication line (+)
    Terminal No. Item Measuring condition Standard
    1(+B) ←→ Chassis ground Voltage Always 10 - 14 V
    2 (GND) ←→ Chassis ground Resistance Always Less than 1 Ξ©
    3 (IGN) ←→ Chassis ground Voltage IG OFF β†’ ON 0 V β†’ 10 - 14 V
    4 (STR-) ←→ Chassis ground - Cannot be measured (steering switch communication line) -
    5 (CAN-) ←→ Chassis ground - Cannot be measured (CAN communication line) -
    6 (CAN+) ←→ Chassis ground - Cannot be measured (CAN communication line) -
    9 (UART) ←→ Chassis ground - Cannot be measured (meter communication line) -
    10 ←→ Chassis ground Voltage Passenger's airbag ON indicator (when illuminating) Less than 1 V
    11 ←→ Chassis ground Voltage Passenger's airbag OFF indicator (when illuminating) Less than 1 V
    12 (STR+) ←→ Chassis ground - Cannot be measured (steering switch communication line) -
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.