Safety Relay
WARNING: This page is about a different car, the 1989 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition on and verify power source to relay. Turn ignition off. Disconnect safety relay connector. Using an ohmmeter, check one-way internal diode in safety relay by checking for continuity in both directions. Energize relay and check for voltage signal on relay output circuit.
- EXAMPLE: Safety Relay
- See Fig 1 . Turn ignition on. Using a voltmeter, check for battery voltage at Blue wire of safety relay. If voltage is not present, check for blown 10-amp fuse or open circuit between fuse and relay.
- Turn ignition off. Disconnect safety relay connector. Using ohmmeter, check for continuity across safety relay Black wire and Blue wire relay terminals. Reverse ohmmeter leads and again check continuity. Continuity should only exist in one direction. Connect voltmeter positive lead to Red-Blue wire relay terminal. Connect negative voltmeter lead to Black wire relay terminal. Apply battery voltage to Blue wire relay terminal and ground to Black wire relay terminal. Voltmeter should show battery voltage while relay is energized.