Monitors, Trips, Drive Cycles and Readiness Codes

Diagnostics








Special Tool(s)

NOTE: For detailed instructions on how to use a scan tool, refer to the scan tool instruction manual.

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. 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.

Transaxle DRIVE Cycle Test

NOTE: Always DRIVE the vehicle in a safe manner according to driving conditions and obey all traffic laws.

After checking for DTCs, use the following Transaxle DRIVE Cycle Test for checking continuous codes:
1. Warm engine to normal operating temperature.
2. Make sure transmission fluid level is correct.
3. With transaxle in OVERDRIVE, moderately accelerate from stop to 80 km/h (50 mph). This allows the transaxle to shift into fourth gear. Hold speed and throttle opening steady for minimum of 15 seconds.
4. With transaxle in fourth gear and maintaining steady speed and throttle opening, lightly apply and release brake (to operate stop lamps). Then hold speed and throttle steady for an additional five seconds minimum.
5. Brake to a stop and remain stopped for a minimum of 20 seconds.
6. Repeat Steps 4 through 6 at least five times.
7. Check for DTCs.
- If DTCs are present, correct all non-transaxle DTCs first, as they can directly affect the operation of the transaxle. Repeat the Road Test to verify the correction.
- If the continuous test passes (system pass) and a concern is still present, refer to the Diagnosis by Symptom and TSBs for concern diagnostics. Symptom Related Diagnostic Procedures