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Home >> Volvo >> 2013 >> XC90 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 1 Of 13 >> ECM-1100: Outside Temperature Sensor. Signal Too Low (B5254T2; B6294T; 2003-2004) >> Signal Too Low >> Checking Components And Wiring

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 

Fig 1: Identifying Connector Terminals
GLL104136Courtesy of VOLVO CARS CORPORATION
Fig 2: Identifying Voltage Display
GLL101041Courtesy of VOLVO CARS CORPORATION
Fig 3: Identifying Outside Temperature Sensor
GLL103188Courtesy of VOLVO CARS CORPORATION