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Circuit Opening Relay

  1. Circuit opening relay is located behind center of dash, near radio. To test circuit opening relay, see CHART A1-7A, FUEL SYSTEM DIAGNOSIS (CIRCUIT OPENING RELAY CHECK) diagnostic chart in BASIC TESTING article in this section.
  2. To test circuit opening relay on LSi, see CHART A2-7A, FUEL SYSTEM DIAGNOSIS (CIRCUIT OPENING RELAY CHECK) diagnostic chart in BASIC TESTING article in this section. For identification of Data Link Connector (DLC) terminals, see illustration. See Fig 1 .
Fig 1: Identifying Data Link Connector (DLC) Terminals
G93J78310Courtesy of GENERAL MOTORS CORP.
NOTE: EFI main relay may be referred to as main relay.
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