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Home >> Peugeot >> 1983 >> 505 Base, 2.3 2, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH Cis >> Lambda Control System Checks >> Preparation For Checks
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Preparation For Checks

NOTE: The frequency valve is operated by pulsating voltage from the electronic control unit. By measuring this signal, certain functions of the system can be tested. A special tester (Bosch KDJE 7453) is recommended, but a high-quality dwell meter may be used instead.
  1. Connect dwell meter to testing connector. Connector is located on left side near windshield washer container. Connector on Volvo is on right side shock tower (Red wire). Saab connector is to left of fuse and relay panel. Connector is behind throttle valve housing (Black/White wire) on Volkswagen and Audi.
  2. Set meter on 4-cyl. scale.
  3. Start engine and run until warm. Disconnect oxygen sensor and observe meter needle (should not fluctuate). Place a piece of tape on meter face to indicate 50% position.
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