Signal Too Low - Intermittent Fault

ECM-1100 OUTSIDE TEMPERATURE SENSOR
SIGNAL TOO LOW - INTERMITTENT FAULT

Checking cables and connectors



Check outside temperature sensor connector for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Intermittent Faults and loose connections according to [1][2]Checking Wiring and Terminals. Intermittent Faults
Check signal cable between control module #B29 (#B39) and outside temperature sensor #1 for an intermittent open-circuit according to [1][2]Checking Wiring and Terminals. Intermittent Faults and a short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Intermittent Faults
Check the ground lead between control module #B2 (#B12) and the outside temperature sensor #2 for an open-circuit according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Other Information
- Connecting the breakout box/accessing the control module, Connecting the Breakout Box (ECM)
- To access/replace the outside temperature sensor, Outside Temperature Sensor, Replacing
- For information about signals, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T


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