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Test 75A - Powertrain Control Module No Response

NOTE: For connector terminal identification, see CONNECTOR  IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS  . Perform TEST VER-1 after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Turn ignition switch to OFF position. Disconnect Powertrain Control Module (PCM). PCM is located on left front fender. Using an external ohmmeter, with DRB connected to Data Link Connector (DLC), measure resistance of Violet/Brown wire between PCM connector terminal No. 26 and DLC connector terminal No. 4. If resistance is more than 5 ohms, repair open Violet/Brown wire. If resistance is less than 5 ohms, go to next step.
  2. Measure resistance of White/Black wire between PCM connector terminal No. 46 and DLC connector terminal No. 3. If resistance is more than 5 ohms, repair open White/Black wire. If resistance is less than 5 ohms, replace PCM.
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