Signal Too Low

Signal too low

Checking the connector








- Ignition off
- Check the wiring and connectors. Check for contact resistance and oxidation
- Reinstall the components, reconnect the connectors etc.
- Ignition on
- Read off the outside temperature.
If the temperature is now within its permitted range, the fault was caused by loose connections in the connector.

Other information
- To access and replace the outside temperature sensor, see Outside temperature sensor door mirror, replacing Outside Temperature Sensor Door Mirror, Replacing.













Is the temperature within its permitted range?

Yes - Fault Found

No - Checking components and wiring

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Checking components and wiring
Check the resistance of the outside temperature sensor.

Note! The outside temperature sensor may be defective if there was a short-circuit to supply voltage in the signal cable. Check this before replacing the sensor.

Check the signal cable between control module terminal #B29 (#B39) and outside temperature sensor terminal #2. Check for a short-circuit to supply voltage. Check for an open-circuit.

Hint: With the ignition on and the outside temperature sensor connector disconnected, the voltage between #2 and ground must be approximately 5 V.

Check the ground lead between control module terminal #B4 (#B14) and outside temperature sensor terminal #3. Check for an open-circuit.
Remedy as necessary.

Other information
- To connect the breakout box / access the control module, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- To access and replace the outside temperature sensor, see Outside temperature sensor door mirror, replacing Outside Temperature Sensor Door Mirror, Replacing
- For resistance values, see Component specifications Specifications
- For information about signals on 5 cylinder engines, see Signal specification Signal Description / Specification
- For information about signals on 6 cylinder engines, see Signal specification Signal Description / Specification.














Continue - Verification

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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

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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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

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the connector

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