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Coasting Advance System

  1. Connect voltmeter to White/Green wire terminal of coasting advance solenoid valve. See Fig 1 . Increase engine speed to 3000 RPM, and lift idle switch arm. See Figure . Verify voltmeter indicates appropriate voltage according to RPM. See COASTING ADVANCE SYSTEM RPM/VOLTAGE  table.
  2. If voltmeter reading is not as specified, check vacuum solenoid valve and voltage at terminal 1S of ECU. See PIN VOLTAGE CHART S article.
COASTING ADVANCE SYSTEM RPM/VOLTAGE

RPM Volts
2500 Or More Approx. 12 Volts
2500-1700 Less Than 1.5 Volts
1700 Or Less Approx. 12 Volts
Fig 1: Checking Coasting Advance System
G117738Courtesy of MAZDA MOTORS CORP.
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