Carry Out on-Board Diagnostics (KOEO, KOER)

After a road test, with the vehicle warm and before disconnecting any connectors perform the Quick Test using the scan tool.

DIAGNOSTICS

Special Tools:

Message Center Display
The following messages may be displayed on the message center.

P0705-P1783:

This message center will display CHECK TRANSMISSION if the following codes have been set.

Note: For codes refer to Diagnostic Trouble Code Chart.

P1783:

This message center will display TRANSMISSION OVERHEAT if the following code has been set.

Note: For codes refer to Diagnostic Trouble Code Chart.

The message center will display GEAR DISPLAY DATA ERR if the following codes have been set.

Note: For codes refer to Diagnostic Trouble Code Chart.

Diagnosing an electronically controlled automatic transaxle is simplified by using the following procedures. One of the most important things to remember is 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 service technician will be able to diagnose and repair the concern the first time.