Signal Too Low - Intermittent Fault

ECM-2000 ENGINE COOLANT TEMPERATURE (ECT) SENSOR
SIGNAL TOO LOW - INTERMITTENT FAULT

Checking wiring and connectors



Check signal cable between control module #A40 and Engine Coolant Temperature (ECT) sensor terminal 2 for an intermittent short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

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 engine coolant temperature (ECT) sensor, Thermostat/Temperature Sensor, Engine Coolant,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.