AX4S

DESCRIPTION
The following items must be checked prior to beginning the diagnostic procedures.

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 as to 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, proceed to verifying the condition.

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

Required Equipment
- Rotunda Transmission 007-00130 with AX4S cable and overlay 007-00087 or equivalent.
- Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent.
- Rotunda 73 Digital Multimeter 105-R0051.
- Rotunda Transmission Range (TR) Sensor Cable (MLPS Cable) 007-00127 or equivalent, with Transmission Tester 007-00130.
- Rotunda 104-Pin Breakout Box 014-00950 or equivalent.
- Transmission Range (TR) Sensor Alignment tool (MLPS Alignment Tool) T92P-70010-AH.

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.
^ Some AX4S transaxle conditions may cause engine concerns. The torque converter clutch not disengaging will stall the engine.

Check Fluid Level and Condition
Check fluid level and condition and correct as required. Testing and Inspection