ELECTRICAL TROUBLESHOOTING - EC003 HYDRAULIC OIL FILTER IS RESTRICTED
DO NOT disconnect or remove any hydraulic system line or fitting unless engine is shut
down and hydraulic system pressure has been relieved. Tighten all connections before
applying pressure. Escaping hydraulic fluid under pressure can penetrate the skin.
Use a piece of cardboard, newspaper, or wood to check for pressurized leaks, to prevent
fluid penetrating the skin.
Contact with engine/hydraulic oil can damage skin. Wear gloves when handling engine/
hydraulic oil. If oil contacts skin, wash it off immediately. Failure to follow this warning may
result in injury to personnel.
Replace hydraulic oil filter
Remove and clean hydraulic oil
Disconnect hydraulic filter pressure
Disconnect instrument panel (IP) (WP
Perform Open Harness Test for circuit
hydraulic filter pressure switch
connector 24, circuit 261A (Y)
harness side, IP connector C23-15,
and circuit 261B (Y) harness side
Reconnect instrument panel (IP) (WP
Replace hydraulic filter pressure switch
closed position, no
Remove hydraulic filter pressure
continuity in open
Refer to Malfunction One Transmission
(Right or Left) Works Correctly and the
Other Does Not in this WP.