ISC Valve

Measure resistance of Idle Speed Control (ISC) valve at 2-wire connector. See ISC RESISTANCE SPECIFICATIONS table. If not to specification, replace ISC valve.

ISC RESISTANCE SPECIFICATIONS

Application	Testing Temperature °F (°C)	Ohms
2.6L	73 (23)	7.7-9.3
3.0L	68 (20)	10.7-12.3

Fig 1: Testing Air Valve (MPV 2.6L)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Testing Air Valve (MPV 3.0L)

Courtesy of MAZDA MOTORS CORP.