Overview
The generator is driven by the FEAD belt. When the engine is started, the generator begins to generate AC, which is internally converted to DC. The DC is controlled by the voltage regulator and supplied to the battery. The PCM controls the voltage regulation setpoint, communicating with the generator internal voltage regulator over a dedicated LIN communication circuit.
Scheme 11
Normal Operation and Fault Conditions
With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the high current BJB and battery B+ cable. The voltage that is supplied to the vehicle electrical system is used for the operation of the various vehicle systems and modules. Many modules monitor this voltage and if it rises above or below their calibrated setpoints, a DTC sets.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0563 | System Voltage High | This DTC sets if the PCM detects voltage from the charging system greater than 15.9 volts with vehicle speed above 8 km/h (5 mph). |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the high current BJB and battery B+ cable. The PCM monitors this B+ voltage through its own voltage supply circuit.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0562 | System Voltage Low | If voltage drops 1.5 volts or more below the generator voltage desired (calculated by the PCM), this DTC sets after 30 seconds. |
| P065B | Generator Control Circuit Range/Performance | This DTC sets when the generator reports an internal regulator failure to the PCM. |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
The generator is belt-driven by the engine accessory drive system. There are several sources of generator noise which include bearing noise, electrical fault noise, generator or belt pulley misalignment. A generator with certain types of diode or stator failures can also produce an audible noise.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P065C | Generator Mechanical Performance | This DTC sets when the generator reports an internal mechanical failure. |
DTC FAULT TRIGGER CONDITIONS
The generator radio suppression equipment reduces interference transmitted through the speakers by the vehicle electrical system.
Note. If the Original Equipment Manufacturer (OEM) Audio Control Module (ACM) has been replaced with an aftermarket unit, the vehicle may not pass this test. Return the vehicle to Original Equipment Manufacturer (OEM) condition before following this pinpoint test.
Note. If the engine is operated at greater than 2, 000 Revolutions Per Minute (RPM) momentarily, the generator self-excites. Make sure when the generator is disconnected the engine rpm stays below 2, 000 Revolutions Per Minute (RPM). If it rises above 2, 000 Revolutions Per Minute (RPM), turn the ignition to the OFF position and start the test over again.
Note. Inspect for any aftermarket accessories that have been added to the vehicle. Check the wiring for these accessories and be sure they have not been attached to the generator circuits and are positioned away from the generator wiring.
The BCM monitors the battery state of charge using the battery monitoring sensor attached to the negative battery cable. Battery voltage is hardwired to the battery monitoring sensor and data is transferred from the battery monitoring sensor to the BCM via a LIN circuit.
The battery monitoring sensor is attached to the negative battery cable. It is supplied battery voltage by the BJB. It communicates battery conditions to the BCM through a dedicated LIN circuit.
The charging system supplies voltage to the battery and the vehicle electrical system through the battery B+ cable. The PCM monitors the generator output through a dedicated LIN communication circuit. The generator uses this LIN circuit to communicate the desired voltage setpoint from the PCM to the internal voltage regulator. The generator also uses this LIN circuit to communicate the generator load and error conditions to the PCM.
With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the high current BJB and battery B+ cable. The voltage that is supplied to the vehicle electrical system is used for the operation of the various vehicle systems and modules. Many modules monitor this voltage and if it rises above or below their calibrated setpoints, a DTC sets.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0563 | System Voltage High | This DTC sets if the PCM detects voltage from the charging system greater than 15.9 volts with vehicle speed above 8 km/h (5 mph). |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the high current BJB and battery B+ cable. The PCM monitors this B+ voltage through its own voltage supply circuit.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0562 | System Voltage Low | If voltage drops 1.5 volts or more below the generator voltage desired (calculated by the PCM), this DTC sets after 30 seconds. |
| P065B | Generator Control Circuit Range/Performance | This DTC sets when the generator reports an internal regulator failure to the PCM. |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
The generator is belt-driven by the engine accessory drive system. There are several sources of generator noise which include bearing noise, electrical fault noise, generator or belt pulley misalignment. A generator with certain types of diode or stator failures can also produce an audible noise.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P065C | Generator Mechanical Performance | This DTC sets when the generator reports an internal mechanical failure. |
DTC FAULT TRIGGER CONDITIONS
The generator radio suppression equipment reduces interference transmitted through the speakers by the vehicle electrical system.
Note. If the Original Equipment Manufacturer (OEM) Audio Control Module (ACM) has been replaced with an aftermarket unit, the vehicle may not pass this test. Return the vehicle to Original Equipment Manufacturer (OEM) condition before following this pinpoint test.
Note. If the engine is operated at greater than 2, 000 Revolutions Per Minute (RPM) momentarily, the generator self-excites. Make sure when the generator is disconnected the engine rpm stays below 2, 000 Revolutions Per Minute (RPM). If it rises above 2, 000 Revolutions Per Minute (RPM), turn the ignition to the OFF position and start the test over again.
Note. Inspect for any aftermarket accessories that have been added to the vehicle. Check the wiring for these accessories and be sure they have not been attached to the generator circuits and are positioned away from the generator wiring.
The BCM monitors the battery state of charge using the battery monitoring sensor attached to the negative battery cable. Battery voltage is hardwired to the battery monitoring sensor and data is transferred from the battery monitoring sensor to the BCM via a LIN circuit.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B11DB:83 | Battery Monitoring Module "A": Value of Signal Protection Calculation Incorrect | This DTC sets if the BCM receives corrupted data from the battery monitoring sensor over the LIN. |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
The battery monitoring sensor is attached to the negative battery cable. It is supplied battery voltage by the BJB. It communicates battery conditions to the BCM through a dedicated LIN circuit.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U1007:00 | Lost Communication With Battery Monitoring Sensor "A": No Sub Type Information | This DTC sets if the BCM does not detect communication through the LIN circuit. This can be a result of an open or short in the LIN circuit or the voltage supply circuit. |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
The charging system supplies voltage to the battery and the vehicle electrical system through the battery B+ cable. The PCM monitors the generator output through a dedicated LIN communication circuit. The generator uses this LIN circuit to communicate the desired voltage setpoint from the PCM to the internal voltage regulator. The generator also uses this LIN circuit to communicate the generator load and error conditions to the PCM.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U012D | Lost Communication With Generator Control Module | This DTC sets if the PCM does not detect communication through the LIN circuit. This can be a result of an open or short in the LIN circuit. This DTC also sets if the generator B+ circuit is open. |
| U042E | Invalid Data Received From Generator Control Module | This DTC sets when the PCM receives invalid data from the generator. |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
See also:
• GENERATOR - 2.0L DURATEC-HE