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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
MX-6 & 626	73 (23)	6.3-9.9

Fig 1: Testing Air Valve

Courtesy of MAZDA MOTORS CORP.