Notes On Intermittents

Manipulate circuit Nos. 410 and 476 wiring, coolant sensor and ECM connector while observing ECM parameter EDO4. If failure is induced, coolant temperature will jump from its normal value to open circuit reading. Disconnect and reconnect both the coolant sensor and ECM connectors. Ensure they are latched before replacing components.

Fig 1: Hard Trouble Code E015 - Open Coolant Sensor Circuit

Fig 2: Hard Trouble Code E015 - Open Coolant Sensor Circuit (1 of 2)

Fig 3: Hard Trouble Code E015 - Open Coolant Sensor Circuit (2 of 2)

Fig 4: Schematic for Hard Trouble Code E015