Power Steering Pressure Switch System Test: Altima
- If CONSULT-II is available, go to next step. If CONSULT-II is not available, go to step 3.
- Using CONSULT-II in DATA MONITOR mode, observe PW/ST SIGNAL in specified conditions. See CHECKING POWER STEERING SWITCH FUNCTION (ALTIMA) table. If PW/ST SIGNAL is as specified, go to step 7. If signal is not as specified, go to step 4.CHECKING POWER STEERING SWITCH FUNCTION (ALTIMA)
Condition PW/ST Signal Steering In Neutral Position OFF Steering Wheel Turned ON - Start engine. Backprobing at ECM, measure voltage between ground and ECM terminal No. 46 (Green wire). See Figure and Figure . When steering wheel is being turned quickly, voltage should be about zero volts. When steering wheel is in straight ahead position, voltage should be about 5 volts. If voltage is not as specified, go to next step. If voltage is as specified, go to step 7.
- Turn ignition off. Disconnect ECM 116-pin harness connector. For ECM location, see Figure. Disconnect power steering pressure switch harness connector. See Figure. Check continuity of Green wire between power steering pressure switch harness connector and ECM harness connector terminal No. 46. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Continuity should exist. Also, check circuit for short to ground or short to voltage. If problem is found, go to next step. If no problem is found, go to step 7.
- Check for open or short in circuit between power steering pressure switch and ECM. If problem is found, repair as necessary. After repair, retest system.
- Check power steering pressure switch. See POWER STEERING PRESSURE SWITCH . If problem is found, replace switch. If switch is okay, go to next step.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.