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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Dynamic Stability Assist (DSA) & Electronic Control Module (ECM) Diagnostic Trouble Codes (644 Body)) >> ECM-0F: Intake Air Temperature (IAT) Sensor. Signal Too High. Permanent Fault (B4204T2 CVVT; 2000) >> Signal too high. Permanent fault >> Checking the ground lead

Checking the ground lead

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Connect an ohmmeter between the intake air temperature (IAT) sensor connector terminal #2 (control module side) and ground.

Fig 1: Identifying Injector Terminals
GLL112386Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0 Ω.