INSPECTION PROCEDURE 1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT  HINT: The valve opening temperature is stamped on the water inlet with thermostat.
(b) Check the valve opening temperature. Standard valve opening temperature: 80 to 84°C (176 to 183°F) If the valve opening temperature is not within the specified range, replace the water inlet sub-assembly with thermostat.
(d) Check that the valve is fully closed when the water inlet with thermostat is at a low temperature (below 77°C (171°F)). If it is not fully closed, replace the water inlet sub-assembly with thermostat. |
Toyota Tundra Service Manual > Sfi System: Exhaust Gas Recirculation Control Circuit (P0403)
DESCRIPTION Refer to DTC P0401 (See page ). DTC No. DTC Detection Condition Trouble Area P0403 Open or short in EGR valve circuit (1 trip detection logic) Open or short in EGR valve circuit EGR valve assembly ECM HINT: DTC P0403 is set when the ignition switch is in the ON position. MONITOR DESCRIPT ...
