Signal Too Low - Intermittent Fault

ECM-1200 INTAKE AIR TEMPERATURE (IAT) SENSOR INLET
SIGNAL TOO LOW - INTERMITTENT FAULT

Checking wiring and connectors



Check signal cable between control module # A22 (# A22) and Mass Air Flow (MAF) sensor terminal 3 for an intermittent short-circuit to ground according to [1][2]Checking Wiring and Terminals. Intermittent Faults

The Intake Air Temperature (IAT) sensor is integrated into the Mass Air Flow (MAF) sensor.

Other information:
- To connect the breakout box, Connecting the Breakout Box (ECM)
- To access/replace the control module, Engine Control Module (ECM), Replacing
- To access/replace the mass air flow (MAF) sensor, Mass Air Flow (MAF) Sensor, Replacing
- For information about signals, Pinout Values and Diagnostic Parameters


Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.