P1493

Test 1 - 3:

Test 4 - 6:

SYMPTOM
P1493-AMBIENT/BATTERY TEMP SENSOR VOLTAGE TOO LOW

WHEN MONITORED
With the ignition on.

SET CONDITION
The PCM senses the voltage from the Battery Temperature Sensor below 0.5 of a volt for 3 seconds.

POSSIBLE CAUSES
- Battery temp sensor volts below 0.5 of a volt
- Battery temperature sensor
- (K118) battery temp signal circuit shorted to ground
- (K118) battery temp signal circuit shorted to the (K4) sensor ground
- PCM