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Home >> Subaru >> 2007 >> B9 Tribeca Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System (Diagnostics) >> Engine Control Module (ECM) I/O Signal >> Electrical Specification
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Electrical Specification

Fig 1: Identifying Engine Control Module I/O Signal Connector Terminals
G05004622Courtesy of SUBARU OF AMERICA, INC.
TERMINALS REFERENCE

Description Terminal No. Measurement Condition and I/O Signal (Idling with ignition ON: Except cruise set light)
Main power supply VB (CONTROL 1)
VB (CONTROL 2)		 A7
B2
  • Battery voltage is present when the main power is turned ON.
  • "0 V" is present when the main power is turned OFF.
Command switch B24
  • "0 V" is detected when the command switch is in CANCEL position.
  • "Approx. 1 V" is present when the command switch is in SET/COAST position.
  • "Approx. 3 V" is detected when the command switch is in RESUME/ACCEL position.
  • "Approx. 4 V" is detected when the command switch is released.
Brake switch 1 (Brake switch) B20
  • Battery voltage is present when the brake pedal is released.
  • "0 V" is present when brake pedal is depressed.
Brake switch 2 (Stop light switch) B28
  • Battery voltage is present when brake pedal is depressed.
  • "0 V" is present when the brake pedal is released.
Main switch B12
  • "0 V" is present while the main switch is pressed or turned on.
  • "5 V" is present when the main switch is OFF.
Ground GND (CONTROL 1)
GND (CONTROL 2)		 A5
D7		 -
Ignition switch B19
  • Battery voltage is present when the ignition switch is turned ON.
  • "0 V" is present when the ignition switch is turned OFF.
Neutral signal C31
  • Battery voltage is present when shift lever is in other than "P" or "N" position.
  • "0 V" is detected when the shift lever is in "P" or "N" position.
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