Signal Too High

ECM-1100 OUTSIDE TEMPERATURE SENSOR
SIGNAL TOO HIGH

DTC Status ECM-1100 Outside Temperature Sensor. Signal Too High
Reading of DTC status ECM-1100

Note! When Reading the DTC status, other stored Diagnostic Trouble Codes (DTCs) and their status will be listed.

- Read 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 - Continue below.
No - Skip to "Checking Wiring And Connectors"


Checking the outside temperature sensor



- Ignition on.

Read the outside temperature in Volts. Check that it is correct according to table: Outside temperature sensor.

Other information
- To localize the outside temperature sensor, Locations
- For information about signals, Pinout Values and Diagnostic Parameters

Is the signal OK?
Yes - Continue below.
No - Skip to "Checking Connector"


Checking Wiring And Connectors



Check the Control module and outside temperature sensor connectors 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 the signal cable between control module connector # B29 (# B41) and outside temperature sensor terminal 1 for an intermittent open-circuit according to [1][2]Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Check the ground lead between control module # B4 (# B16) and outside temperature sensor terminal 2 for an intermittent open-circuit according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Other information:
- To connect the breakout box, Connecting the Breakout Box (ECM)
- To access/replace the control module, Engine Control Module (ECM), Replacing
- To localize the outside temperature sensor, Locations
- 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.
--Testing Complete--


Checking Connector



- Ignition off.
Check outside temperature sensor connector for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary.

Other information
- To localize the outside temperature sensor, Locations


Checking Wiring And Components



Check outside temperature sensor resistance. For resistance value, Outside Temperature Sensor

Check signal cable between control module connector # B29 (# B41) and outside temperature sensor terminal 1 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault and a short-circuit to supply voltage according to [1][2]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.

Check the ground lead between control module # B4 (# B16) and outside temperature sensor terminal 2 for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary

Other information
- To connect the breakout box, Connecting the Breakout Box (ECM)
- To access/replace the control module, Engine Control Module (ECM), Replacing
- To localize the outside temperature sensor, Locations
- For information about signals, Pinout Values and Diagnostic Parameters


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on.
- Read outside temperature.

Is the temperature within its permitted range?
Yes - Testing Complete.
No - Continue below.


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.