Dodge Ram Truck 1500-2500-3500. Manual — part 909
P0516-BATTERY TEMPERATURE SENSOR CIRCUIT LOW
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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
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P0516-BATTERY TEMPERATURE SENSOR CIRCUIT LOW (CONTINUED)
For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Ignition on and battery voltage greater than 10 volts.
•
Set Condition:
Battery temperature sensor voltage below 0.039 of a volt. One Trip Fault. Three good trips to turn off the MIL.
Possible Causes
(K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO GROUND
(K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
BATTERY TEMPERATURE SENSOR
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.
BATTERY TEMP SENSOR VOLTAGE BELOW 0.5 OF A VOLT
Ignition on, engine not running.
With the scan tool, monitor Battery Temperature Sensor volts.
Is the voltage below 0.5 of a volt?
Yes
>> Go To 2
No
>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.
BATTERY TEMPERATURE SENSOR
Ignition on, engine not running.
With the scan tool, read the Battery Temp Sensor Voltage value.
Disconnect the Battery Temperature Sensor harness connector.
Did the Battery Temperature Voltage value change from below 1.0 volt to above 4.5 volts?
Yes
>> Replace the Battery Temperature Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 3
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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
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P0516-BATTERY TEMPERATURE SENSOR CIRCUIT LOW (CONTINUED)
3.
(K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the C3 PCM harness connector.
Measure the resistance between ground and the (K25) Batt Temp Sig-
nal circuit in the Battery Temp Sensor harness connector.
Is the resistance below 100 ohms?
Yes
>> Repair the short to ground in the (K25) Batt Temp Signal
circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 4
4.
(K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
Measure the resistance between the (K25) Batt Temp Signal circuit
and the (K900) Sensor Ground circuit in the Battery Temp Sensor har-
ness connector.
Is the resistance below 5.0 ohms?
Yes
>> Repair the short between the (K900) Sensor Ground cir-
cuit and the (K25) Batt Temp Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 5
5.
PCM
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
DR/DH
P0517-BATTERY TEMPERATURE SENSOR CIRCUIT HIGH
DR/DH
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
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