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QOS III PREHEATING SYSTEM 6D6 – 5 Inspection on QOSIII System Operation I Inspection on Quick Heating Operation 1. Disconnect thermo-sensor connection on the 2. Connect the circuit tester between glow plug and 3. Inspect the following items with starter switch set to voltage for 9 ~ 13 sec. II Inspection on Afterglow Operation 1. Disconnect thermo-sensor connection on the 2. Connect the circuit tester between glow plug and 3. Inspect the following item with start the engine. 1) The circuit tester shall indicate about 7 volts after 360 seconds of engine start. • If above specifications are not satisfied, inspect THERMO SENSOR Measure the resistance depending on the water tempera- Current (mA) 20 ± 1 1.0 50 ± 1 Resistance (K ) 1.0 2.0 ~ 3.0 0.6 ~ 1.0 Temperature |