P0100

Test 1 - Test 4:

Test 5 - Test 9:

Test 10 - Test 14:

Test 15 - Test 16:

SYMPTOM
P0100-MASS AIR FLOW SENSOR SIGNAL VOLTAGE TOO LOW

WHEN MONITORED
With the ignition on.

SET CONDITION

POSSIBLE CAUSES
- 12 volt supply circuit open
- Checking the engine control relay system
- ECM - 5-volt supply circuit
- Mass airflow sensor
- Sensor ground open
- Intermittent condition
- MAF sensor 5 volt supply circuit open
- MAF sensor signal circuit open
- MAF 5 volt supply circuit shorted to the sensor ground circuit
- MAF sensor signal circuit shorted to ground
- ECM sensor ground circuit open
- MAF sensor 5 volt supply circuit shorted to ground
- MAF sensor signal circuit shorted to the sensor ground circuit
- MAF sensor 5 volt supply circuit shorted to voltage
- MAF sensor circuit shorted to voltage