|
|
Symptom: P1682-CHARGING SYSTEM VOLTAGE TOO LOW When Monitored and Set Condition: P1682-CHARGING SYSTEM VOLTAGE TOO LOW When Monitored: With the ignition key on and the engine running over 1500 RPM after 25 seconds. Set Condition: When the PCM regulates the generator field and there are no detected field problems, but the voltage output does not increase. POSSIBLE CAUSES AMBIENT/BATT TEMPERATURE SENSOR B (+) CIRCUIT HIGH RESISTANCE GENERATOR GROUND HIGH RESISTANCE GENERATOR FIELD DRIVER CIRCUIT OPEN GENERATOR FIELD DRIVER CIRCUIT SHORTED TO GROUND GENERATOR FIELD SOURCE CIRCUIT SHORTED TO GROUND GENERATOR FIELD SOURCE (+) CIRCUIT OPEN PCM TEST ACTION APPLICABILITY 1 Turn the ignition off. t, read the target charging voltage. Is the target charging voltage above 15.1 volts? All Yes → No → 2 Turn the ignition off. t in sensors, read the AMBIENT/BAT TMP DEG. Using a Thermometer, measure under hood temperature. All Yes → No → 37 CHARGING |