DR-6C Coolant Sensor Wires to Logic Module
1. With diagnostic read-out tool connected to engine test connector, coolant sensor connector disconnected and system in Sensor Test Mode 04, connect a jumper wire between tan wire terminal of coolant sensor harness connector and negative battery post. Note that display readings must be multiplied by 10.
2. If display reads 260°, locate and repair open circuit in black/light blue wire of coolant sensor harness connector to engine harness splice.
3. If display reads 00°, locate and repair open circuit in tan wire of coolant sensor harness connector to logic module.