P1804

P1802, P1804, P1809 Transfer Control Unit

Description
The transfer control unit controls the transfer control device which controls shifts between 4H and 4LO and between 2WD and 4WD. A DTC may set when any of the following occur:
^ Malfunction is detected in the memory (RAM) system of transfer control unit.
^ Malfunction is detected in the memory (ROM) system of transfer control unit.
^ Malfunction is detected in the memory (EEPROM) system of transfer control unit.
^ AD converter system of transfer control unit is malfunctioning.

DTC Logic

DTC Detection Logic





DTC Confirmation Procedure

Step 1:

Diagnosis Procedure

Step 1-3: