Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 629

7A1–16 AUTOMATIC TRANSMISSION (4L30-E)

MEMO

AUTOMATIC TRANSMISSION (4L30-E) 7A1–17

DIAGNOSIS

INTRODUCTION

The systematic trouble shooting information covered by this Section offers a practical and systematic
approach to diagnosing 4L30-E transmission, using information that can be obtained from road tests,
electrical diagnosis, oil pressure checks or noise evaluation.

The key to correcting a complaint is to make use of all of the available symptoms and logically letting them
direct you to the cause.

When dealing with automatic transmission complaints, it is best to gather as many symptoms as possible
before making the decision to remove the transmission from the vehicle.
Frequently, the correction of the cause of the complaint does not require removal of the transmission from
the vehicle.

7A1–18 AUTOMATIC TRANSMISSION (4L30-E)

DRIVER INFORMATION

To analyze the problem fill a complete description of the owner’s complaint.
Please draw a circle around the right information and complete the following form. (Find next page an
example of form completed). You can draw a circle around many numbers if you are not sure.

AUTOMATIC TRANSMISSION (4L30-E) 7A1–19

Example of form completed.