Before On-Board Diagnostics

INSTRUCTIONS
The Rotunda Transmission Tester 007-00130 or equivalent allows a technician to operate the electrical portion of the transaxle independent of the vehicle electronics to determine specific transaxle concerns. The transaxle tester usage is divided into five steps:
1. Preliminary testing and diagnosis
2. Installing the transaxle tester
3. Static testing- engine OFF
4. Dynamic testing- engine running
5. Removing the transaxle tester and clearing diagnostic trouble codes (DTCs)

PRELIMINARY
Before any diagnostic testing is done on vehicle some preliminary checks must be performed, as described below. Be sure to write down findings, especially any DTCs found, for future reference.
a. Check transaxle fluid level and condition.
b. Check for add-on items (phones, computers, CB radio, etc.).
c. Visually inspect wiring harness and connectors.
d. Check for vehicle modifications.
e. Check shift linkage for proper adjustment.
f. Verify customer concern: upshift, downshift, coasting, engagement, noise/vibration
g. Vehicle must be at normal operating temperature.
h. Perform vehicle on-board diagnostic.
i. Record all DTCs.
j. Service all non-transaxle codes.