P0517

P0517-HIGH VOLTAGE AT THE BAT TEMP SENSOR





For complete wiring diagrams refer to Diagrams/Electrical.


- When Monitored:

With ignition on and battery voltage greater than 10.4 volts.

- Set Condition:

The circuit voltage to the ECM is above a calibrated threshold for a certain period of time.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test


1. BATTERY TEMP SENSOR

Disconnect the Battery temp sensor harness connector.

Check connectors - Clean/repair as necessary.

Measure the resistance of the Battery temp sensor

Is the resistance between 300 and 90k ohms?

Yes

- Go To 2

No

- Replace the Battery temp sensor.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

2. OPEN CIRCUIT





Reconnect the disconnected Battery temp sensor harness connector.

Disconnect the ECM harness connectors.

Check connectors - Clean/repair as necessary.

Measure the resistance between the temperature sensor (K25) signal and (K900) return circuits at the ECM harness connector.

Is the resistance between 300 and 90k ohms?

Yes

- Go To 5

No

- Go To 3

3. (K25) SIGNAL CIRCUIT OPEN





Disconnect the Battery temp sensor harness connector.

Measure the resistance of the sensor (K25) signal circuit between the sensor harness connector and the ECM harness connector.

Is the resistance less than 10 Ohms?

Yes

- Go To 4

No

- Repair the open (K25) signal circuit.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

4. (K900) RETURN CIRCUIT OPEN





Measure the resistance of the sensor (K900) return circuit between the sensor harness connector and the ECM harness connector.

Is the resistance less than 10 Ohms?

Yes

- Go To 5

No

- Repair the open (K900) return circuit.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

5. (K25) SIGNAL CIRCUIT SHORTED





Check for a short circuit from (K25) signal circuit to all other circuits at the ECM harness connector.

Is the resistance more than 100k ohms?

Yes

- Go To 6

No

- Repair the shorted (K25) signal circuit.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

6. ECM





Reconnect the ECM harness connectors.

While monitoring with the scan tool, use a jumper wire and connect the sensor (K25) signal circuit to the sensor (K900) return circuit at the sensor harness connector.

Did P0516 set?

Yes

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition

No

- Replace the ECM.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test