Component Tests and General Diagnostics

Injection Electronics (Motronic Control Unit). Wiring Diagram:

TESTING PULSE SENSOR

Disconnect the electrical connector. Using an ohmmeter, check the resistance between terminal 1 (yellow wire) and terminal 2 (black wire) on the sensor side end of the connector. If the resistance is not approximately 520 ± 5 ohms, the sensor is faulty and should be replaced. Remove the sensor mounting bolt using a 5 mm hex wrench. When the sensor is installed, the distance between the sensor tip and the toothed wheel should be 1.0 ± 0.3 mm (0.04 ± 0.01 in.). Tighten the sensor mounting screw to 7 ± 1 Nm (62 ± 9 in.lb.). Be careful not to overtighten the mounting screw. Be sure the wiring is correctly routed through the protective covering.