P0516

P0516-BATTERY TEMPERATURE SENSOR CIRCUIT LOW







- When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.

- Set Condition:
The PCM detects that the Battery Temperature Sensor input voltage is below the minimum acceptable value. Two trip fault. Three good trips to turn off the MIL.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Pre-Diagnostic Troubleshooting Procedure

1. DTC IS ACTIVE

NOTE: Diagnose and repair any system voltage DTCs before continuing with this test.

1. Start the engine and allow it to reach normal operating temperature.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose fitting clothing. Failure to follow these instructions can result in personal or fatal injury.

2. With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

- Go to 2

No

- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.Checking for an Intermittent DTC

2. (K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Battery Temperature Sensor connector.
3. Disconnect the Powertrain Control Module (PCM) connector.
4. Measure the resistance between ground and the (K25) Batt Temp Signal circuit in the Battery Temperature Sensor harness connector.

Is the resistance above 100 ohms?

Yes

- Go to 3

No

- Repair the (K25) Batt Temp Signal circuit for a short to ground.
- Perform the PCM Verification Test.PCM Verification Test

3. (K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT




1. Measure the resistance between the (K25) Batt Temp Signal circuit and the (K900) Sensor Ground circuit in the Battery Temperature Sensor harness connector.

Is the resistance above 100 ohms?

Yes

- Go to 4

No

- Repair the (K25) Batt Temp Signal circuit for a short to the (K900) Sensor Ground circuit.
- Perform the PCM Verification Test.PCM Verification Test

4. (K25) BATT TEMP SIGNAL CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE




1. Measure the resistance of the (K25) Batt Temp Signal circuit between the Battery Temperature Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

Is the resistance below 5.0 ohms?

Yes

- Go to 5

No

- Repair the (K25) Batt Temp Signal circuit for an open circuit or high resistance.
- Perform the PCM Verification Test.PCM Verification Test

5. BATTERY TEMPERATURE SENSOR
1. Turn the ignition off.
2. Connect the Powertrain Control Module (PCM) connector.
3. Turn the ignition on.
4. With the scan tool, read the Battery Temperature Sensor signal voltage.

NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with the connector disconnected.

Does the scan tool display the voltage as described above?

Yes

- Replace the Battery Temperature Sensor.
- Perform the PCM Verification Test.PCM Verification Test

No

- Go to 6

6. POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Battery Temperature Sensor and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
5. Look for the data to change or for a DTC to set during the wiggle test.
6. Search for any Technical Service Bulletins that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test.PCM Verification Test

No

- Replace and program the Powertrain Control Module (PCM).
- Perform the PCM Verification Test.PCM Verification Test