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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Engine Controls - Tests W/Codes - 3.3L CNG) >> Verification Tests >> Test VER-2 - Road Test Verification

Test VER-2 - Road Test Verification

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If more than one DTC is present and have not been diagnosed, go to TEST TC-1A and diagnose other DTCs. If Powertrain Control Module (PCM) has not been replaced, connect scan tool to data link connector and erase DTCs.
  2. Using scan tool, reset all values in adaptive memory. Disconnect scan tool. To ensure no other DTCs are present, turn on A/C and blower (if equipped) and drive vehicle at least 5 minutes (attaining a speed of 40 MPH). Ensure transmission shifts through all gears. When road test is complete, turn ignition off.
  3. Start engine and operate at idle for 2 minutes. Turn engine off. Using scan tool, read DTCs. Using scan tool, read DTCs. If previously repaired DTCs reset, repair is not complete. Check all related Tech Service Bulletins (TSBs), perform corrective action as necessary, and go to TEST TC-1A as necessary. If a new DTC message is present, go to TEST TC-1A and diagnose other DTCs. If no DTCs are present, repair is complete.
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