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*NO RESPONSE FROM ALL MODULES (CONTINUED) POSSIBLE CAUSES SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE SENSOR GROUND CIRCUIT OPEN FUEL TANK PRESSURE SENSOR POWERTRAIN CONTROL MODULE For a complete Data Link Connector Circuit Diagram, (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MOD- Diagnostic Test 1. CHECK PCM C4 HARNESS CONNECTOR CONNECTION Turn the ignition off. Disconnect the PCM C4 harness connector. Note: Check connector — Clean/repair as necessary. Turn the ignition on. Attempt to communicate with any module with the DRB III T . Does the DRB III T communicate with the module selected? Yes >> The repair is complete. Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> Go to 2 2. DISCONNECT THE FUEL TANK PRESSURE SENSOR Turn the ignition off. Disconnect the Fuel Tank Pressure Sensor harness connector. Attempt to communicate with any module with the DRB III T . Does the DRB III T communicate with the module selected? Yes >> Replace the Fuel Tank Pressure Sensor. (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL LEVEL SENDING No >> Go to 3 ZH ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS 8E - 5 |