P0560-System Voltage Too Low; P1536-Generator Field Current Too High; Checking The Charging System Operation - Diesel - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

Symptom List:

P0560-SYSTEM VOLTAGE TOO LOW

P1536-GENERATOR FIELD CURRENT TOO HIGH

*CHECKING THE CHARGING SYSTEM OPERATION - DIESEL

Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0560-SYSTEM VOLTAGE TOO
LOW.
When Monitored and Set Condition:
P0560-SYSTEM VOLTAGE TOO LOW
When Monitored: With the engine running.
Set Condition: The ECM detects battery voltage is below 8.0 volts.
P1536-GENERATOR FIELD CURRENT TOO HIGH
When Monitored: With the engine running.
Set Condition: The ECM detects the current on the Generator Field above 10.7 amps.
INTERMITTENT CONDITION
GENERATOR BELT CONDITION OR TENSION
GENERATOR FIELD
HIGH RESISTANCE IN THE VOLTAGE SUPPLY CIRCUIT(S) TO THE ECM
GENERATOR FIELD CONTROL CIRCUIT SHORTED TO VOLTAGE
GENERATOR FUSED B+ CIRCUIT HIGH RESISTANCE
GENERATOR FIELD CONTROL CIRCUIT OPEN
GENERATOR FIELD CONTROL CIRCUIT SHORTED TO GROUND
GENERATOR GROUND CIRCUIT HIGH RESISTANCE
BODY GROUND CIRCUIT OPEN
FUSED ASD RELAY OUTPUT CIRCUIT TO GENERATOR OPEN
ENGINE CONTROL MODULE
HIGH RESISTANCE ON THE BATTERY(+) SENSE CIRCUIT
HIGH RESISTANCE ON THE BATTERY(-) SENSE CIRCUIT
POSSIBLE CAUSES
119
DRIVEABILITY - DIESEL