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Home >> Infiniti >> 2009 >> G37 Base, 2D Coupe >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing - G37 Coupe >> ASCD Brake Switch >> Component Function Check
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Component Function Check

  1. CHECK ASCD BRAKE SWITCH FUNCTION

With CONSULT-III 

  1. Turn ignition switch ON.
  2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-III.
  3. Check "BRAKE SW1" indication under the following conditions.
MONITOR ITEM REFERENCE

Monitor item Condition Indication
BRAKE SW1 Brake pedal (A/T)
Brake pedal or clutch pedal (M/T)
Slightly depressed OFF
Brake pedal (A/T)
Brake pedal and clutch pedal (M/T)
Fully released ON

Without CONSULT-III 

  1. Turn ignition switch ON.
  2. Check the voltage between ECM harness connector terminals as per the following.
VOLTAGE REFERENCE

ECM Condition Voltage (V)
Connector + -
Terminal Terminal
M107 126 (ASCD brake switch signal) 128 Brake pedal (A/T)
Brake pedal or clutch pedal (M/T)
Slightly depressed Approx. 0
Brake pedal (A/T)
Brake pedal and clutch pedal (M/T)
Fully released Battery voltage

Is the inspection result normal? 

YES: INSPECTION END

NO: Go to "DIAGNOSIS PROCEDURE ".