Test Fuel temperature sensor Flash code: 1x long, 1x short Fault indication: Fault is not indicated by EDC indicator lamp Fault path: Fuel temperature sensor Effect of fault: This fault has no direct effect. The substitute value specified for such instances in the control unit may lead to a slight reduction in output Possible cause Line break, short-circuit, Fuel temperature sensor defective, control unit defective, failure or contamination of cooling system Test precondition: EDC control unit disconnected / connected Socket box connected 47 Test Measurement Corrective measures Sensor resistance (control unit disconnected) Measure resistance at socket box across pin 34 and pin 13 Setpoint:
1.3–3.6 KΩ at 15–30°C – Check lines – Check plug connections – Replace temperature sensor – If no fault found, replace control unit Sensor voltage (control unit connected) Measure voltage at socket box across pin 34 and pin 13 Setpoint: 4.17–2.62 V at 10–50°C