P1511-Battery Sense Line 1 Voltage Too High; P1511-Battery Sense Line 1 Voltage Too Low; P1512-Battery Sense Line 2 Voltage Too High; P1512-Battery Sense Line 2 Voltage Too Low - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

Symptom List:

P1511-BATTERY SENSE LINE 1 VOLTAGE TOO HIGH

P1511-BATTERY SENSE LINE 1 VOLTAGE TOO LOW

P1512-BATTERY SENSE LINE 2 VOLTAGE TOO HIGH

P1512-BATTERY SENSE LINE 2 VOLTAGE TOO LOW

Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P1511-BATTERY SENSE LINE 1
VOLTAGE TOO HIGH.
When Monitored and Set Condition:
P1511-BATTERY SENSE LINE 1 VOLTAGE TOO HIGH
When Monitored: With the ignition on or the engine running.
Set Condition: The ECM detects Battery Sense circuit voltage above 16.0 volts.
P1511-BATTERY SENSE LINE 1 VOLTAGE TOO LOW
When Monitored: With the ignition on or the engine running.
Set Condition: The ECM detects Battery Sense circuit voltage below 6.0 volts.
P1512-BATTERY SENSE LINE 2 VOLTAGE TOO HIGH
When Monitored: With the ignition on or the engine running.
Set Condition: The ECM detects Battery Sense circuit voltage above 2.0 volts.
P1512-BATTERY SENSE LINE 2 VOLTAGE TOO LOW
When Monitored: With the ignition on or the engine running.
Set Condition: The ECM detects Battery Sense circuit voltage below -2.0 volts.
INTERMITTENT CONDITION
FUSE 26 OPEN
ECM GROUND CIRCUIT(S) OPEN
BATTERY(-) SENSE CIRCUIT SHORTED TO VOLTAGE
BATTERY(-) SENSE CIRCUIT OPEN
BATTERY(+) SENSE CIRCUIT SHORTED TO GROUND
BATTERY(+) SENSE CIRCUIT OPEN
ENGINE CONTROL MODULE
POSSIBLE CAUSES
189
DRIVEABILITY - DIESEL