P1493

Tests 1 - 3:

Tests 4 - 6:

SYMPTOM
P1493-AMBIENT/BATT TEMP SEN VOLTS TOO LOW

WHEN MONITORED
The ignition key ON.

SET CONDITION
Ambient Temperature Sensor is less than 0.98 volt at the PCM for 5 seconds.

POSSIBLE CAUSES
- Intermittent Condition
- Ambient Temperature Sensor Internal Failure
- Ambient Temperature Sensor Signal Shorted To Ground
- Ambient Temperature Sensor Signal Shorted To Sensor Ground Circuit
- PCM Terminal Condition
- PCM