Signal Too Low
Signal too low
DTC status ECM-1100 Outside temperature sensor. Signal too low
Reading of DTC status ECM-1100
Note! When reading off the DTC status, other stored diagnostic trouble codes (DTCs) and their status will be listed.
- Read off the DTC status. Check the status of the relevant Diagnostic Trouble Code (DTC).
Was the status of the relevant Diagnostic Trouble Code (DTC) displayed as permanent?
Yes - Checking wiring and components
No - Intermittent fault
-------------------------------------------------
Intermittent fault
Signal too low. Intermittent fault
Checking wiring and connectors
Check the signal cable between control module #B29 (#B41) and outside temperature sensor terminal 1 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access the control module, see
- To localize the outside temperature sensor, see Location of components Locations
- For information about signals, see Signal specification Signal Description / Specification.
Continue - Fault-tracing information
------------------------
Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - Fault Found
------------------------
Attempt New Test - Checking wiring and connectors
DONE - DONE
FAULT FOUND - DONE
-------------------------------------------------
DONE - DONE
-------------------------------------------------
Checking wiring and components
Check the resistance of the outside temperature sensor. Compare with table in link below.
Check the signal cable between control module connector #B29 (#B41) and outside temperature sensor terminal 1 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Hint: With the ignition on and outside temperate sensor connector disconnected the voltage between terminal 1 and ground terminal should be approximately 5 V.
Remedy as necessary.
Other information:
- Outer temperature sensor Outer Temperature Sensor
- Connecting the breakout box Connecting the Breakout Box
- Location of components Locations
- Signal specification Signal Description / Specification
Continue - Verification
-------------------------------------------------
Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on.
- Read off outside temperature.
Is the temperature within its permitted range?
Yes - VERIFIED
No - VERIFICATION FAILED
------------------------
VERIFIED - Fault Found
VERIFICATION FAILED - Fault-tracing information
-------------------------------------------------
Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
------------------------
FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - DTC status ECM-1100 Outside temperature sensor. Signal too low
-------------------------------------------------