Toyota — Electrical Parts Inspection

0-14 ELECTRICAL PARTS INSPECTION 1. Always disconnect the battery plug before inspecting or servicing electrical parts. 2. Pay sufficient attention when handling electronic parts. (1) Never subject electronic parts, such as computers and relays, to impact. (2) Never expose electronic parts to high temperature or moisture. (3) Do not touch connector terminals, as they may be deformed or damaged due to static electricity. 3. Use a circuit tester that matches the object and purpose of measurement. Analog type: This type is convenient for observing movement during operation and the operating condition. The measured value is only for reference or guideline. Digital type:

A fairly accurate reading is possible. However, it is difficult to observe operation or movement. 1 Difference between results of measurement with analog and digital types * The results of measurements using the analog type and the digital type may be different. Use the circuit tester according to its instruction manual. Differences between the polarities of the analog type and the digital type are described below. (1) Analog circuit tester Example of measurement result Tester range: k Ω range Forward Reverse Black tester probe Red tester probe Red tester probe Black tester probe Forward direction: Continuity 11 k Ω Reverse direction:

No continuity (2) Digital circuit tester Example of measurement result Tester range: 2 M Ω Forward Reverse Red tester probe Black tester probe Black tester probe Red tester probe Forward direction: Continuity 2 M Ω Reverse direction: No continuity