P074B Unable to engage 3GR
Description
This malfunction is detected when the A/T does not shift into 3GR position as
instructed by TCM. This is not
only caused by electrical malfunction (circuits open or shorted) but by
mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC ...
Main power supply and ground circuit
Diagnosis Procedure
1.CHECK TCM POWER CIRCUIT 1
Turn the ignition switch OFF.
Disconnect the TCM connector.
Check the voltage between the TCM harness connector terminals and
ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK TCM POWER ...