Steering Switch Check: 240SX

If Nissan CONSULT scan tool is available, go to next step. If Nissan CONSULT scan tool is not available, go to step 6).
Connect scan tool to Data Link Connector (DLC). Select DATA MONITOR mode. Monitor SET SW, RESUME/ACC SW and CANCEL SW parameters. Each parameter should indicate ON when corresponding switch is pressed, and OFF when released. If scan tool display is as specified, steering switch is okay. If scan tool display is not as specified, go to next step.
Attempt to sound horn. If horn sounds, go to next step. If horn does not sound, go to step 5).
Check steering switch. See STEERING SWITCH under COMPONENT TESTS. Replace if necessary. If steering switch is okay, check for open or short in wiring harness between steering switch and ASCD control unit. See WIRING DIAGRAMS . Repair as necessary.
Check condition of fuse No. 38 (10-amp), located in relay box. Check horn relay. See RELAYS under COMPONENT TESTS. Check for open or short in wiring harness between horn relay and fuse. Repair as necessary.
Turn ignition off. Disconnect ASCD control unit harness connector. Using DVOM, measure voltage between ground and specified terminals at ASCD control unit harness connector. See STEERING SWITCH CIRCUIT VOLTAGE table. See Figure . If voltage is as specified, steering switch is okay. If voltage is not as specified, go to step 3).

STEERING SWITCH CIRCUIT VOLTAGE