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Code 2-2-3 (No Idle Valve Signal)

  1. Check operation of idle valve in test mode No. 3. See TEST MODE NO. 3 under RETRIEVING CODES  . If valve does not operate, check wiring.
  2. Connect Measuring Unit (999-3070 ) to ECU. See CONNECTING MEASURING UNIT TO ECU  . Start engine. Connect voltmeter between terminals No. 4 and 24. Approximately 11 volts should be present. Connect voltmeter between terminals No. 22 and 24. Approximately 7.5 volts should be present.
  3. Turn engine off (ignition on). Using a voltmeter, check voltage at terminals No. 4 and 22. Voltage should be approximately 8-9 volts. If no voltage is present, check wiring to idle valve.
  4. Turn ignition off. Using an ohmmeter, check resistance across terminals No. 4 and 22. Resistance should be approximately 25 ohms. If not, replace idle valve.
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