Code 15 - Open Engine Coolant Temperature Sensor

NOTE: See appropriate WIRING DIAGRAM in WIRING DIAGRAMS  section for terminal and connector identification.

Fig 1: ECT Sensor Side Of Black 16-Pin Connector (2.6L Passport)

Courtesy of ISUZU MOTOR CO.

Fig 2: Code 15 - Diagnostic Flowchart (2.6L Passport)

Courtesy of ISUZU MOTOR CO.