AX4N

PRELIMINARY INSPECTION
- Know and understand the customer's concern.
- Verify the concern by operating the vehicle.
- Check the fluid level and condition.
- Check for NON-factory add-on items.
- Check shift linkages for proper adjustment.
- Check TSBs for the concern.

DIAGNOSTICS
- Perform on-board diagnostic procedures (KOEO, KOER).
- Record all Diagnostic Trouble Codes (DTCs).
- Repair all NON-Transaxle codes FIRST.
- Repair all transaxle codes SECOND.
- Erase all CONTINUOUS codes and attempt to repeat them.
- Repair all continuous codes.
- If ONLY PASS codes, proceed to DIAGNOSIS by SYMPTOM CHARTS for further information and diagnosis.

By following the diagnostic sequence, the service technician will be able to diagnose and repair the concern the first time.

PRELIMINARY INSPECTION
The following items must be checked before proceeding:

KNOW AND UNDERSTAND THE CONCERN
In order to properly diagnose a concern you must first understand the customer complaint or condition. Customer contact may be required in order for the technician to begin to verify the concern. You must understand the conditions when the concern occurs. For example:
- hot or cold vehicle temperature.
- hot or cold ambient temperature.
- vehicle driving conditions.

After understanding when and how the concern occurs then proceed to verifying the concern.

VERIFICATION OF CONDITION
This information must be used in both determining the actual cause of customer concerns and performing the appropriate service procedures.

The following procedures must be used when verifying customer concerns for the AX4N transaxle:

REQUIRED EQUIPMENT

CAUTION: To properly diagnose an AX4N transaxle, the Rotunda Transmission Tester 007-00130 or equivalent must have been updated for AX4N compatibility. The Rotunda AX4N Transmission Tester Update (007-00105) includes internal software and related components and a new cable and overlay. Inspect your tester for the "AX4N Compatible" label located near the tester's cable connector. If the label is missing, do not use the tester to diagnose the AX4N transaxle. Contact Rotunda Equipment or supplier as listed in instruction manual for information on how to have the tester updated.
- Rotunda Transmission Tester 007-00130
- Rotunda AX4N Transmission Tester Update 007-00105
- Rotunda New Generation Star (NGS) Tester 418-FO48 (007-00500) or equivalent
- Rotunda 73 Digital Multimeter 105-R0051 or equivalent
- Rotunda Transmission Range (TR) Sensor Cable (TRS-E Cable) 418-F 107 (007-00111) or Rotunda AX4N Cable and Overlay 418-FO42 (007-00117) or equivalents, used with Transmission Tester 007-00130
- Rotunda Digital TR Sensor Overlay 007-00131 used with Rotunda Transmission Range (TR) Cable " E " 418-F 107 (007-00111)
- Rotunda Digital TR Sensor Alignment Tool 307-351 (T97L-70010-A)
- Rotunda 104-Pin Breakout Box 418-049 (0 14-00950) or equivalent

DETERMINE CUSTOMER CONCERN
- Hot or cold vehicle operating temperature
- Hot or cold ambient temperatures
- Type of terrain
- Vehicle loaded/unloaded
- City/highway driving
- Upshift
- Downshift
- Coasting
- Engagement
- Noise/Vibration

NOTE: If noise/vibration, check for dependencies, either rpm dependent, vehicle speed dependent, shift dependent, gear dependent, range dependent or temperature dependent.

NOTE: Some AX4N transaxle conditions may cause engine concerns. The torque converter clutch not disengaging will stall the engine.