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Home >> Volvo >> 2003 >> C70 2.3 53, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Ignition And Control Systems - General Diagnostics And Tests (Coupe)) >> Tests Of Sensors And Controllers (B5234T3; B5254T; 1998) >> Checking engine speed (RPM) sensor signal >> Signal missing. Permanent fault >> Checking for contact resistance and oxidation

Checking for contact resistance and oxidation

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The engine did not start because of loose connections in the engine speed (RPM) sensor and/or engine control module (ECM) connectors.

Fig 1: Identifying Connector Cleaned/Checked
GLL125079Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue when the fault has been remedied.