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Symptom: P1616-5V OUTPUT REFERENCE VOLTAGE #1 LOW When Monitored and Set Condition: P1616-5V OUTPUT REFERENCE VOLTAGE #1 LOW When Monitored: With the ignition on. Set Condition: If the PCM detects a voltage <4.75 volts on the 5 Volt Supply #1 circuit for at least 100 ms, it will set this DTC. POSSIBLE CAUSES INTERMITTENT CONDITION (K6) 5-VOLT SUPPLY BELOW 4.75 VOLTS (K6) 5-VOLT SUPPLY SHORTED TO GROUND PCM TEST ACTION APPLICABILITY 1 NOTE: Diagnose any TP Sensor or MAP Sensor DTC(s) first if set along with t, read the DTC’s. Does the Good Trip Indicator display NO? All Yes → Go To 2 No → Go To 5 2 Turn the ignition off. All Yes → Go To 3 No → Replace the MAP Sensor. Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L. 3 Turn the ignition off. All Yes → Repair the short to ground in the (K6) 5-volt Supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L. No → Go To 4 202 DRIVEABILITY - 1.6L GAS |