BE-50 BODY ELECTRICAL SYSTEM – COMBINATION METER Engine Coolant Temperature Gauge Ignition Switch Sender Gauge Battery BE1219 Z07423 Engine Coolant Temperature Gauge Test Bulb (3W) Battery BE0144 214747 A C B N08911 209421 ENGINE COOLANT TEMPERATURE GAUGE INSPECTION 1. INSPECT RECEIVER GAUGE OPERATION (a) Disconnect the connector from the sender gauge. (b) Turn the ignition switch ON, check that the receiver gauge needle indicates COOL. (c) Ground terminal on the wire harness side connector through a 3 W test bulb. (d) Turn the ignition switch ON, check that the bulb lights up and the receiver gauge needle moves toward the hot side. If operation is as specified, replace the sender gauge. Then recheck the system. If operation is not as specified, measure the receiver gauge resistance. 2. INSPECT RECEIVER GAUGE RESISTANCE Measure the resistance between terminals. HINT: Connect the test leads so that the current from the ohmmeter can flow according to the chart order. Between terminals | Resistance (Ω) A–B | Approx. 229.7 A–C | Approx. 54.0 B–C | Approx. 175.7 If resistance value is not as specified, replace the engine coolant temperature receiver gauge. 3. INSPECT SENDER GAUGE RESISTANCE Measure the resistance between terminal and gauge body. Temperature °C (°F) | Resistance (Ω) 50 (122.0) | 160 ~ 240 120 (248.0) | 17.1 ~ 21.2 If resistance value is not as specified, replace the engine coolant temperature sender gauge. H06248