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P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION (CONTINUED) 7. THROTTLE POSITION SENSOR Connect the C2 PCM harness connector. Ignition on, engine not running. With a scan tool, monitor the TP Sensor voltage. Connect a jumper wire between the (K22) TP Sensor No.1 Signal cir- Does the TP Sensor voltage change from approximately 4.9 Yes >> Replace the Throttle Position Sensor. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 8 NOTE: Remove the jumper wire before continuing. 8. EXCESSIVE RESISTANCE IN THE (K22) TP NO.1 SIGNAL CIRCUIT Turn the ignition off. Disconnect the C2 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance below 5.0 ohms? Yes >> Go To 9 No >> Repair the excessive resistance in the (K22) TP Sensor No.1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 55 |