Component Inspection
1.

Check ECTS

(1)

Ignition "OFF"

(2)

Disconnect ECTS connector.

(3)

Measure resistance between terminals 1 and 3 of the ECT sensor (to ECT sensor side).

Specification : Error range is 2~3%

Temperature(℃/℉)

-40/40

-30/-22

-20/-4

0/32

20/68

80/176

100/212

110/230

120/248

Resistance(kΩ)

45.3

25.6

15.1

5.8

2.5

0.33

0.19

0.16

0.13

Voltage(V)

4.48

4.34

4.12

3.46

2.57

0.64

0.39

0.34

0.27

(4)

Is the measured resistance within specifications ?

YES

▶ Go to "Check PCM" as below.

NO

▶ Substitute with a known - good IATS and check for proper operation.

▶ If the problem is corrected, replace IATS and go to "Verification of Vehicle Repair" procedure.

2.

Check PCM

(1)

Ignition "OFF"

(2)

Connect Scantool and Ignition "ON" & Engine "OFF"

(3)

Select simulation function on scantool.

(4)

Simulate voltage at terminal 1 of ECT sensor signal connector.

(5)

Does the signal value of ECT sensor changes according to simulation voltage ?

YES

▶ Thoroughly check connectors for looseness, poor connection, bending,corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

NO

▶ Substitute with a known - good PCM and check for proper operation.

If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.

Яндекс.Метрика