10999527

1.

Connect GDS and select "Diagnostic Trouble Codes(DTCs)" mode.

2.

IG "ON".

3.

Using a GDS, Clear DTC.

4.

IG "OFF".

5.

Disconnect ECU's connector which is connected to CAN Bus.

6.

IG "ON".

7.

Connect GDS and select "Diagnostic Trouble Codes(DTCs)" mode.

8.

Are any DTCs present ?

▶ Go to step 1 of the component inspection and disconnect another ECU's connector which is connected to CAN Bus in step 5.

▶ Repeat above step until test completed on all ECU in CAN bus.

▶ If DTC is present after above test, substitute with a known-good 4WD ECU and check for proper operation. If the problem is corrected, replace 4WD ECU, and then go to "Verification of Vehicle Repair" procedure.

▶ Fault is intermittent caused by faulty HECU, faulty 4WD ECU. Go to "Verification of Vehicle Repair" procedure.