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Engine Controls - Trouble Shooting - No Codes: Diagnosis Nissan 350Z I

Testing & Diagnostics ~219 words

SYMPTOM DIAGNOSIS

Symptom checks cannot be used properly unless problem occurs while vehicle is being tested. To reduce diagnostic time, ensure steps in BASIC DIAGNOSTIC PROCEDURES and appropriate SELF-DIAGNOSTICS articles were performed before diagnosing a symptom. Following symptoms are available for diagnosis

  1. «HARD START OR NO START (CRANKS NORMALLY)»(ref-151937-S36917243032003010900000)
  2. «ENGINE STALLS»(ref-151937-S07387564432003010900000)
  3. «HESITATION OR SURGE»(ref-151937-S24653472202003010900000)
  4. «SPARK KNOCK/DETONATION»(ref-151937-S28677127652003010900000)
  5. «LACK OF POWER/POOR ACCELERATION»(ref-151937-S41276726412003010900000)
  6. «HIGH OR LOW IDLE»(ref-151937-S33018148222003010900000)
  7. «ROUGH IDLE»(ref-151937-S30269910892003010900000)
  8. «IDLING VIBRATION»(ref-151937-S11661169072004010500000)
  9. «SLOW RETURN TO IDLE OR NO RETURN TO IDLE»(ref-151937-S40570518092003010900000)
  10. «OVERHEATS OR WATER TEMPERATURE HIGH»(ref-151937-S24559637632004010500000)
  11. «EXCESSIVE FUEL CONSUMPTION»(ref-151937-S37137974082003010900000)
  12. «EXCESSIVE OIL CONSUMPTION»(ref-151937-S38907527782003010900000)
  13. «BATTERY DEAD OR UNDER CHARGE»(ref-151937-S06925636882004010500000)

PROBLEM DIAGNOSIS

Note. Perform the following procedure when problem was not found after performing testing procedure, when Diagnostic Trouble Code (DTC) cannot be verified using DTC CONFIRMATION TESTS, or when reported symptom does not recur.

  1. Clear DTCs. See appropriate SELF-DIAGNOSTICS article. Inspect affected circuit ground connections by removing ground bolt or screw. Inspect all mating surfaces for rust, dirt or corrosion. Clean all mating surfaces as necessary. Reinstall bolt or screw.
  2. Check for aftermarket electrical accessories which may be interfering with ground circuit. Perform «INTERMITTENT SIMULATION»(ref-151937-S35653780512003010900000) under TEST PROCEDURES.
  3. The most common cause of an intermittent problem is poor electrical connections. Inspect affected harness connectors for loose connections, corrosion or loose connections.

See also:
• ON-VEHICLE ADJUSTMENTS

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