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P2074-MAP/TPS CORRELLATION - HIGH AIRFLOW/VACUUM LEAK DETECTED (CONTINUED) 11. EXCESSIVE RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the C1 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance below 5.0 ohms? Yes >> Go To 12 No >> Repair the excessive resistance in the (F856) 5-volt Sup- ply circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 12. (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply Is the resistance above 100k ohms? Yes >> Go To 13 No >> Repair the short to ground in the (F856) 5-volt Supply cir- cuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 9 - 852 ENGINE ELECTRICAL DIAGNOSTICS WK |