DR-7C Charge Temperature Sensor Wire to Logic Module
1. With diagnostic read-out tool connected to engine test connector, charge temperature sensor connector disconnected and system in Sensor Test Mode 03, connect jumper wire between black/red wire of charge temperature sensor connector and negative battery post. Note that display readings must be divided by 10.
2. If display reads zero volts, locate and repair open circuit in black/light blue wire of charge temperature sensor connector to wiring harness splice.
3. If display reads 5 volts, locate and repair open circuit in black/red wire of charge temperature sensor connector to logic module.