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 ...
U1000 CAN Comm circuit
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.CHECK DTC DETECTION
With CONSULT.
1. Turn ignition switch OFF to ON.
2. Perform self diagnostic result.
Is DTC U1000 detected?
YES >> Proceed to diagnosis procedure. Refer to LAN "Trouble Diagnosis Flow
Cha ...