September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Code 15 - Open - Engine Coolant Temperature Sensor

NOTE: See appropriate wiring diagram in WIRING DIAGRAMS article for ECM 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.