P0070 - AMBIENT AIR TEMPERATURE SENSOR STUCKFor a complete wiring diagram Refer to Section 8WTheory of OperationThe Ambient Air Temperature Sensor is a two wire sensor that is hard wired to the TIPM. The TIPM supplies a 5 volt sensor signal and sensor ground to the sensor. The sensor internal resistance
changes in response to changes in ambient temperature. The TIPM provides the ECM with ambient temperature over the CAN Bus network.- When Monitored:With the ignition on.
- Set Condition:The Ambient Air Temperature Sensor signal over CAN Bus from the TIPM is implausible.
Possible Causes
INTERMITTENT DTC
TOTALLY INTEGRATED POWER MODULE
AMBIENT TEMPERATURE SENSOR
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Diagnostic Test1. DTC IS ACTIVEThe Ambient Air Temperature Sensor is hardwired to the TIPM.Ignition on, engine not running.With the scan tool, Clear DTCs in the Engine Control Module (ECM).Monitor the scan tool for at least two minutes.Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.With the scan tool, select View DTCs.Is the status Active for this DTC?Yes- Refer to the Service Information to diagnose problem with Ambient Air Temperature Sensor or associated wiring and connectors.
No- Test Complete.