|
|
Symptom: P0073-AMBIENT TEMP SENSOR HIGH When Monitored and Set Condition: P0073-AMBIENT TEMP SENSOR HIGH When Monitored: The ignition key on. Set Condition: The Ambient Temperature Sensor voltage is greater than 4.9 volts. One Trip Fault. POSSIBLE CAUSES AMBIENT AIR TEMPERATURE SENSOR VOLTAGE ABOVE 4.9 VOLTS (K145) AAT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE AMBIENT AIR TEMPERATURE SENSOR INTERNAL FAILURE (K145) AAT SIGNAL CIRCUIT OPEN (K167) SENSOR GROUND CIRCUIT OPEN PCM TEST ACTION APPLICABILITY 1 NOTE: After repairing this DTC, the AAT sensor value will not refresh until t, read the Ambient Air Temperature Sensor voltage. Is the voltage above 4.9 volts? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 Turn the ignition off. All Yes → Repair the short to battery voltage in the (K145) AAT Signal circuit. No → Go To 3 278 DRIVEABILITY - NGC |