How to Proceed With Troubleshooting

A750E AUTOMATIC TRANSMISSION: 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 the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

Refer to the Customer Problem Analysis How To Proceed With Troubleshooting.

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 Automatic Transmission Fluid A750E Automatic Transmission.

Refer to Park/Neutral Position Switch A750E Automatic Transmission.

Refer to Floor Shift Assembly A750E Automatic Transmission.

NG -- GO TO STEP 19
OK -- Continue to next step.

11. MECHANICAL SYSTEM TESTS

Refer to the Mechanical System Tests 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 A750E Automatic Transmission System.

NG -- GO TO STEP 18
OK -- Continue to next step.

15. PROBLEM SYMPTOMS TABLE CHAPTER 2

Refer to the Problem Symptoms Table A750E Automatic Transmission System.

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 - A750E.

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