P0514-Battery Temp Sensor Circuit Signal Voltage Too Low - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

Symptom:
P0514-BATTERY TEMP SENSOR CIRCUIT SIGNAL VOLTAGE TOO
LOW
When Monitored and Set Condition:

P0514-BATTERY TEMP SENSOR CIRCUIT SIGNAL VOLTAGE TOO LOW

When Monitored: With the ignition on.
Set Condition: The ECM detects Battery Temperature Sensor Signal voltage below 0.151
volt.
INTERMITTENT CONDITION
BATTERY TEMPERATURE SENSOR
BATTERY TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
BATTERY TEMPERATURE SENSOR SIGNAL AND GROUND CIRCUITS SHORTED TOGETHER
ENGINE CONTROL MODULE
TEST
1 Turn the ignition on.
With the DRB, monitor the Battery Temperature Sensor voltage.
Is the Battery Temperature Sensor voltage below 0.151 volt?
Yes → Go To 2
→ Go To 5
No
2 Turn the ignition off.
Disconnect the Battery Temperature Sensor harness connector.
Turn the ignition on.
With the DRB, read the Battery Temperature Sensor voltage.
Is the voltage above 4.0 volts?
Yes → Replace the Battery Temperature Sensor in accordance with the
→ Go To 3
No
3 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Battery Temperature Sensor harness connector.
Measure the resistance between ground and the Battery Temperature Sensor Signal
circuit.
Is the resistance above 1000 ohms?
Yes → Go To 4
→ Repair the Battery Temperature Sensor Signal circuit for a short
No
POSSIBLE CAUSES
ACTION
Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
to ground.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
103
APPLICABILITY
All
All
All