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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 2 Of 11 >> ECM-1200: Intake Air Temperature (IAT) Sensor. Signal Too High. Permanent Fault (B6284T; 1999-2001) >> Signal too high. Permanent fault >> Checking the wiring and component >> Notes

Checking the wiring and component: Notes

Check the Intake Air Temperature (IAT) sensor resistance.

Check the signal cable between control module terminal #A5 (#A5) and intake air temperature sensor terminal #1. Check for a short-circuit to ground.

HINT: With the ignition on and the intake air temperature (IAT) sensor connector disconnected, the voltage between terminal #1 and ground must be approximately 5 V. 

Remedy as necessary.

Other information 

Fig 1: Identifying Intake Air Temperature (IAT) Sensor Connector Terminals
GLL104010Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Temperature Sensor - Intake (Turbocharged Engines Only, 2002-2004)
GLL102919Courtesy of VOLVO CARS OF NORTH AMERICA.