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Battery Temp Sensor Voltage Either Too Low or Too High

Name of Code:
Battery Temp Sensor Voltage Either Too High Or Too Low

When Monitored:
With the ignition key on.

Set Condition:
The PCM senses the voltage from the BTS to be either below 0.5 volts or above 4.9 volts for 3 seconds.

Theory of Operation:
The battery temp sensor (BTS) voltage is used by the PCM to determine what the charging system goal should be. The PCM uses that goal to determine the charging output level. The battery temp sensor is also used to disable EGR operation and OBDII monitors at cold ambients. The battery temp sensor is internal to the PCM.

Possible Causes:
- PCM failure