How to Proceed With Troubleshooting

A750E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:
- The ECM is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check 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
NEXT -- Continue to next step.

3. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.

4. CONNECT TECHSTREAM TO DLC3*
NEXT -- Continue to next step.

5. CHECK AND CLEAR DTCS AND FREEZE FRAME DATA*
(a) Refer to DTC Check/Clear DTC Check / Clear.
NEXT -- Continue to next step.

6. VISUAL INSPECTION
NEXT -- Continue to next step.

7. SETTING CHECK MODE DIAGNOSIS*
(a) Refer to the Check Mode Procedure Check Mode Procedure.
NEXT -- Continue to next step.

8. PROBLEM SYMPTOM CONFIRMATION
(a) Refer to the Road Test Road Test.

Result





B -- GO TO STEP 10
A -- Continue to next step.

9. SYMPTOM SIMULATION
(a) Refer to the Electronic Circuit Inspection Procedure Electronic Circuit Inspection Procedure.
NEXT -- Continue to next step.

10. DTC CHECK*
(a) Refer to DTC Check/Clear DTC Check / Clear.

Result





B -- GO TO STEP 19
A -- Continue to next step.

11. BASIC INSPECTION
(a) Refer to Automatic Transmission Fluid Procedures.
(b) Refer to Park/Neutral Position Switch Adjustments.
(c) Refer to Shift Lever Assembly Adjustments.

NG -- GO TO STEP 22
OK -- Continue to next step.

12. MECHANICAL SYSTEM TESTS
(a) Refer to the Mechanical System Tests Mechanical System Tests.

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

13. HYDRAULIC TEST
(a) Refer to the Hydraulic Test Hydraulic Test.

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

14. MANUAL SHIFTING TEST
(a) Refer to the Manual Shifting Test Manual Shifting Test.

NG -- GO TO STEP 17
OK -- Continue to next step.

15. PROBLEM SYMPTOMS TABLE CHAPTER 1
(a) Refer to the Problem Symptoms Table Symptom Related Diagnostic Procedures.

NG -- GO TO STEP 20
OK -- Continue to next step.

16. PROBLEM SYMPTOMS TABLE CHAPTER 2
(a) Refer to the Problem Symptoms Table Symptom Related Diagnostic Procedures.

NG -- GO TO STEP 20
OK -- Continue to next step.

17. PROBLEM SYMPTOMS TABLE CHAPTER 3
(a) Refer to the Problem Symptoms Table Symptom Related Diagnostic Procedures.

NG -- GO TO STEP 20
NEXT -- Continue to next step.

18. PART INSPECTION

NG -- GO TO STEP 22
OK -- Continue to next step.

19. DTC CHART
(a) Refer to the Diagnostic Trouble Code Chart Automatic Transmission System - A750E.
NEXT -- Continue to next step.

20. CIRCUIT INSPECTION
NEXT -- Continue to next step.

21. IDENTIFICATION OF PROBLEM
NEXT -- Continue to next step.

22. REPAIR OR REPLACE
NEXT -- Continue to next step.

23. CONFIRMATION TEST
NEXT -- END