Checking wiring and components
Check outside temperature sensor resistance.
The outside temperature sensor can be defective if the signal cable has been short-circuited to supply voltage. Check this before replacing the sensor.
Check signal cable between control module #B29 (#B39) and outside temperature sensor #1 for an intermittent open-circuit according to Open-circuit, permanent faults and a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
HINT: With the ignition on and the outside temperature sensor connector disconnected, the voltage between #1 and ground should be approximately 5 V.
Check the ground lead between control module #B2 (#B12) and the outside temperature sensor #2 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see Connecting the breakout box .
- To access/replace the outside temperature sensor see Outside temperature sensor door mirror, replacing
- For resistance values, see Component specifications .
- For information about signals, see ELECTRICAL SYSTEM
- Continue
Refer to Verification