Diagnostic Method

Judge NG when the malfunction criteria below are completed. Judge OK and clear NG when the engine coolant temperature is more than 20°C (68°F) or more.

Judgment Value 

Fig 1: Threshold Value Table

Courtesy of SUBARU OF AMERICA, INC.

Map 1 

Fig 2: Temperature Table

Courtesy of SUBARU OF AMERICA, INC.

Judgment time: Find from minimum engine coolant temperature. 

Fig 3: Engine Coolant Temperature Table

Courtesy of SUBARU OF AMERICA, INC.

1. Time Needed for Diagnosis: 

   Change at minimum engine coolant temperature.

2. Malfunction Indicator Light Illumination: 

   Illuminates when malfunction occurs in 2 continuous driving cycles.