Mercedes Benz

P0118 B11/4 (Coolant temperature sensor) : Short circuit to positive or open circuit (P0118) Possible cause: ­ B11/4 (Coolant temperature sensor) Affected functions: ­ Engine diagnosis ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ Test 1: Check component B11/4 (Coolant temperature sensor). 1. Check component B11/4 (Coolant temperature sensor). Test 1.1: Check component B11/4 (Coolant temperature sensor) using actual value. Test 1.2: Check signal lines on component B11/4 (Coolant temperature sensor). Test 1.3: Check internal resistance of component B11/4 (Coolant temperature sensor). 1.1. Check component B11/4 (Coolant temperature sensor) using actual value. Test prerequisite ­ The actual value is not o.k. Test sequence ­ Switch on ignition. Status of relevant actual value: ­ Coolant temperature:Warning! Communication with ECU required. ­ Coolant temperature sensor ( Signal voltage ):Warning! Communication with ECU required. Specified values 10.52SS Page 3942...