Repair procedures: Installation

CAUTION:

• Replace O-Ring (A) before reinstalling the 4WD ITA (ECU).

Fig 1: 4WD ITA (ECU) O-Ring

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1. Install the new 4WD ITA (ECU) (B).
2. Tighten the fixings to 22 Nm (2.2 kgf.m, 15.9 lb-ft).
   Fig 2: 4WD ITA (ECU)

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3. Check the connector pin for erosion.
4. Connect vehicle wires and 4WD ITA (ECU) connector (A).
   Fig 3: 4WD ITA (ECU) Connector

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5. IG Key "ON" Engine off.
6. To write the transfer case data in new ITA, select "ECU Data Back-up & Writing" service of GDS.
   Fig 4: Display - Select ECU Data Back-Up And Writing Service Screen

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7. Perform initial calibration, select "T/C Clutch Calibration" service of GDS.
   Fig 5: Display - Perform Initial Calibration, Select T/C Clutch Calibration Service Screen

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8. IG Key "OFF", wait 10s or so.
9. IG Key "ON", engine "OFF".
10. Check if transfer case data are written correctly using "ECU Data Back-up & Writing" service of GDS.
11. Check DTCs, for pending DTC, delete them.
12. If still pending DTC's or incorrect data written then IGN OFF and repeat whole procedure from point 5.
13. No DTC's available and correct backup data written, service procedure is successfully done.