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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: • Set Condition: Possible Causes (K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO GROUND (K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO THE (K91) BATT TEMP RETURN CIRCUIT BATTERY TEMPERATURE SENSOR FRONT CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - 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 HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 559 |