How to Proceed With Troubleshooting

A750F AUTOMATIC TRANSMISSION SYSTEM:

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure that there is no trouble in the CAN communication system.
- *: Use a Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CUSTOMER PROBLEM ANALYSIS
NEXT -- Continue to next step.
3. CONNECT TECHSTREAM TO DLC3 *
NEXT -- Continue to next step.
4. CHECK AND CLEAR DTCS AND FREEZE FRAME DATA *
Refer to the DTC CHECK / CLEAR DTC Check / Clear.
NEXT -- Continue to next step.
5. VISUAL INSPECTION
NEXT -- Continue to next step.
6. SETTING CHECK MODE DIAGNOSIS *
Refer to the CHECK MODE PROCEDURE Check Mode Procedure.
NEXT -- Continue to next step.
7. PROBLEM SYMPTOM CONFIRMATION
Refer to the ROAD TEST Road Test.
Result:






B -- GO TO STEP 9
A -- Continue to next step.
8. SYMPTOM SIMULATION
Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE Electronic Circuit Inspection Procedure.
NEXT -- Continue to next step.
9. DTC CHECK *
Refer to the DTC CHECK / CLEAR DTC Check / Clear.
Result:






B -- GO TO STEP 17
A -- Continue to next step.
10. BASIC INSPECTION
Refer to the AUTOMATIC TRANSMISSION FLUID Procedures.
Refer to the PARK/NEUTRAL POSITION SWITCH Testing and Inspection.
Refer to the FLOOR SHIFT ASSEMBLY Adjustments.
NG -- GO TO STEP 19
OK -- Continue to next step.
11. MECHANICAL SYSTEM TEST
Refer to the MECHANICAL SYSTEM TEST Mechanical System Tests.
NG -- GO TO STEP 16
OK -- Continue to next step.
12. HYDRAULIC TEST
Refer to the HYDRAULIC TEST Hydraulic Test.
NG -- GO TO STEP 16
OK -- Continue to next step.
13. MANUAL SHIFTING TEST
Refer to the MANUAL SHIFTING TEST Manual Shifting Test.
NG -- GO TO STEP 15
OK -- Continue to next step.
14. PROBLEM SYMPTOMS TABLE CHAPTER 1
Refer to the PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures.
NG -- GO TO STEP 18
OK -- Continue to next step.
15. PROBLEM SYMPTOMS TABLE CHAPTER 2
Refer to the PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures.
NEXT -- Continue to next step.
16. PART INSPECTION
NEXT -- GO TO STEP 19
17. DTC CHART*
Refer to the DIAGNOSTIC TROUBLE CODE CHART Automatic Transmission System.
NEXT -- Continue to next step.
18. CIRCUIT INSPECTION*
NEXT -- Continue to next step.
19. REPAIR OR REPLACE
NEXT -- Continue to next step.
20. CONFIRMATION TEST*
NEXT -- END