ISC Valve

Disconnect ISC valve electrical connector. Connect ohmmeter to ISC valve 2-wire connector. Measure resistance. See ISC RESISTANCE SPECIFICATIONS table. If resistance is not within specification, replace ISC valve.

ISC RESISTANCE SPECIFICATIONS

Application	Testing Temp.: °F (°C)	Ohms
2.0L	73 (23)	7.7-9.3
2.5L	68 (20)	10.7-12.3

Fig 1: Testing Air Valve (MX-6 & 626)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Diagnostic Connector Terminal ID (MX-6 & 626)

Courtesy of MAZDA MOTORS CORP.