Code 15 - Open Engine Coolant Temperature Sensor

NOTE: See wiring diagrams in 2.3L: WIRING DIAGRAMS - 2.3L , Pickup 2.6L: WIRING DIAGRAMS - 2.6L , Passport and Rodeo 2.6L: WIRING DIAGRAMS - 2.6L article for terminal and connector identification.

Fig 1: ECT Sensor Side Of Black 16-Pin Connector

Courtesy of ISUZU MOTOR CO.

Fig 2: Code 15 - Diagnostic Flowchart

Courtesy of ISUZU MOTOR CO.