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Home >> Mazda >> 1988 >> RX-7 Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> CEC System >> Testing >> Electronic Control Unit (Ecu)

Electronic Control Unit (Ecu)

  1. Operate engine to normal operating temperature. Connect Engine Signal Monitor (49 9200 162) and Adapter (49 9200 163) to ECU and wiring harness. Place selector switch and monitor switch on terminal voltage to be tested.
  2. Turn ignition on. Note voltage of designated terminals. See Fig 1 through Fig 4 . If voltage is not within specification, check wiring circuit and individual component.
Fig 1: Non-Turbo ECU Terminal Voltages (1 of 2)
G94858Courtesy of MAZDA MOTORS CORP.
Fig 2: Non-Turbo ECU Terminal Voltages (2 of 2)
G94859Courtesy of MAZDA MOTORS CORP.
Fig 3: Turbo ECU Terminal Voltages (1 of 2)
G94860Courtesy of MAZDA MOTORS CORP.
Fig 4: Turbo ECU Terminal Voltages (2 of 2)
G94861Courtesy of MAZDA MOTORS CORP.
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