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Cold Dr10B - Enrichment Valve Circuit

  1. With engine running, connect voltmeter positive lead to cavity No. 5 of ECU 7-wire connector. Attach negative lead to ground. At temperatures below 126°F, voltmeter should read a steady voltage of less than one volt below battery voltage.
    Fig 1: View of ECU Connector, COLD DR10B - Enrichment Valve Ckt
    G2478Courtesy of CHRYSLER MOTORS.
  2. If voltage is within one volt of battery voltage, replace ECU. If voltage is 0-1 volt, disconnect 7-wire connector. If voltage is now within one volt of battery voltage, replace ECU. If still 0-1 volt, proceed to COLD DR13. If voltage was okay in step 1), proceed to COLD DR14.
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