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Home >> GMC >> 1996 >> Forward Control 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 72 (Engine Controls - Tests W/Codes - Body Control Computer) >> Self-Diagnostic Tests >> Test 107A - Repairing Powertrain Control Module No Response Condition
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Test 107A - Repairing Powertrain Control Module No Response Condition

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.
NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  section at the end of this article. Perform TEST VER-1B after each repair.
  1. Turn ignition off. Disconnect Powertrain Control Module (PCM). PCM is located between Data Link Connector (DLC) and battery on fenderwell. Using an external ohmmeter, with scan tool connected to DLC, check 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. Check resistance of White/Black wire between PCM connector terminal No. 46 and DLC connector terminal No. 4. 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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