Input and Output Revolution Sensor: Inspection

Disconnect the input and output revolution sensor connector.
Use an ohmmeter to measure the resistance between terminals 1 and 2.
Standard resistance

Input revolution sensor: 387 - 473 Ω (at 20°C, 4x2), 560 - 680 Ω (at 20°C, 4x4)

Output revolution sensor: 560 - 680 Ω (at 20°C)

Fig 1: Measuring Resistance Between Terminals 1 And 2
Courtesy of ISUZU MOTOR CO.