Test Boost air temperature sensor Flash code: 3x short Fault indication: Fault indicated by steady light at EDC indicator lamp Fault path: Turbo air 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, turbo air temperature sensor defective, control unit defective, failure or contamination of cooling system. Test precondition: EDC control unit disconnected/connected Socket box connected 34 Test Measurement Corrective measures Sensor resistance Measure resistance at socket box across pin 55 and pin 13 Setpoint:
3,8 – 0,8 kΩ at 10-50°C – Check lines – Check plug connections – Replace temperature sensor – If no fault found, replace con tro l unit Sensor voltage Measure voltage at socket box across pin 55 and pin 13 Setpoint: 4,17 – 2,62 V at 10-50°C