TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.031

ATGE/A340 Automatic Trans (GE) — How to Proceed with Troubleshooting, page 32

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How to Proceed with Troubleshooting — MK4 Supra A340 Automatic Trans (GE), page 32
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Page text (OCR transcript)
AT1–32
AT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

Vehicle Brought to Workshop

1  Customer Problem Analysis
   P. AT1–33

2  Check and Clear Diagnostic Trouble Codes (Precheck)
   P. AT1–33 ~ AT1–35

Symptom does
not occurs  4
3  Problem Symptom Confirmation          Symptom Simulation
   P. AT1–37                              P. IN–24

Symptom Occurs

                              OK Code  7
5  Diagnostic Trouble Code Check    Preliminary Check              NG
   P. AT1–34 - AT1–35          P. AT1–42

                         8  ↓ OK
6  Diagnostic Trouble Code Check  NG  Shift Position Signal Check
   P. AT1–52                      P. AT1–36
                              ↓ OK

                         9  Mechanical System Tests              NG
                            P. AT1–44
                              ↓ OK

                        10  Manual Shifting Test                 NG
                            P. AT1–50
                              OK

11                Matrix Chart of Problem Symptoms – P. AT1–57

      Chapter 1        OK    Chapter 2        OK    Chapter 3
      (Electronic)    ⇒     (On–Vehicle)    ⇒     (OFF–Vehicle)
      P. AT1–58              P. AT1–60              P. AT1–62

         NG                    NG            13 ↓ NG
12  Circuit        Main Throttle Signal Check
    Inspection     Stop Light Signal Check      Parts Inspection
                   Kick–Down Signal Check

                   P. AT1–64 ~ AT1–95

   Identification of Problem  14  Repair  15  Confirmation Test     End

Items inside      are titles of pages in this manual,
with the page number indicated in the bottom portion.
See the indicated pages for detailed explanations.
Step [2], [5], [12], [15]:
Diagnostic steps permitting the use of the TOYOTA hand–
held tester or TOYOTA brake–out box.