Water Temperature Signal Inspection

Symptom: Improper water temperature gauge indication.

CHECK COMBINATION METER INPUT SIGNAL
1. Start engine and select "METER/M&A" on CONSULT.
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 FUNCTION (ENGINE) " (with QR25DE).
  - Perform ECM self-diagnosis. Refer to , "CONSULT FUNCTION (ENGINE) " (with MR20DE for California).
  - Perform ECM self-diagnosis. Refer to , "CONSULT FUNCTION (ENGINE) " (with MR20DE except California).
  NG: Replace combination meter. Refer to , "REMOVAL AND INSTALLATION ".