FNR5 Automatic Transaxle/Transmission

Diagnostics

Special Tool(s):

Diagnosing an electronically-controlled automatic transaxle is simplified using these procedures. It is important to remember that there is a definite procedure to follow. Do not take short cuts or assume that critical checks or adjustments have already been made. Follow the procedures as written to avoid missing critical components or steps. By following the diagnostic sequence, the technician will be able to diagnose and repair the concern the first time.

On-Board Diagnostics with Diagnostic Tool

NOTE: For detailed instruction and other diagnostic methods using the diagnostic tool, refer to the tester and Computers and Control Systems.

These quick tests should be used to diagnose the transmission control module (TCM) and should be carried out in order.
^ Quick Test 1.0 - Visual Inspection
^ Quick Test 2.0 - Set Up
^ Quick Test 3.0 - Key ON, Engine OFF
^ Quick Test 4.0 - Continuous Memory
^ Quick Test 5.0 - Key ON, Engine RUN
^ Special Test Mode
- Wiggle Test Mode
- Output Test Mode
^ TCM Reset Mode
^ Clearing DTCs
^ OBD II Drive Cycle
^ Other Diagnostic Tool Features

For further Information on other diagnostic testing features using the diagnostic tool, refer to Computers and Control Systems. Other diagnostic methods include:
^ Parameter Identification (PID) Access Mode
^ Freeze Frame Data Access Mode
^ Oxygen Sensor Monitor Mode