Water Temperature Signal Inspection

WARNING: This page is about a different car, the 2009 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Symptom: Improper water temperature gauge indication.

CHECK COMBINATION METER INPUT SIGNAL
1. Start engine and select "METER/M&A" on CONSULT-III.
2. Run the engine at different temperatures and compare water temperature with "W TEMP METER" of "DATA MONITOR". Indication should be as follows:
  High: 130°C (266°F)
  
  Normal: 70 - 105°C (158 - 221°F)
  
  Cold: Less than 50°C (122°F)
  
  OK or NG
  
  OK: Perform ECM self-diagnosis. Refer to "CONSULT-III FUNCTION (ENGINE) ".
  
  NG: Replace combination meter. Refer to "REMOVAL AND INSTALLATION ".