METER AND GAUGES — Tachometer, Temp., Speedometer and Fuel Gauges — Wiring Diagram — With Gasoline Engine (Supplement-VII)

Gasoline-variant gauges wiring. The COMBINATION METER M38 receives the following sense inputs: • Pin 14 — WATER TEMPERATURE SENSOR F3 (OR/B = Orange with Black). Resistive thermistor — drops as temp rises. • Pin 18 — VEHICLE SPEED SENSOR E31 (L/Y = Blue with Yellow). Pulse signal (~4 pulses/rev of output shaft). Shared with TCM on CVT. • Pin 19 — TACHOMETER signal from ECM F62 (PU = Purple). Square-wave pulse at firing rate. • Pin 20 — FUEL LEVEL SENSOR UNIT M69 (R/B + B). Resistive float sender — typically ~10 Ω full, ~110 Ω empty. TCM (TRANSMISSION CONTROL MODULE) F46 contributes the SPORT lamp signal (L/B = Blue with Black) on CVT cars.