Datsun (Except 200SX)
- Disconnect negative battery cable and switch connector. Connect ohmmeter between terminal 45 and ground. Check for 40-70 ohms. Connect ohmmeter between terminal 46 and switch body.
- Ohmmeter reading should show full continuity (0 ohms) at 57°F (14°C) and infinity reading at 77°F (25°C). If readings are not as specified, replace thermo-time switch.