[23A] AUTOMATIC TRANSMISSION (FF) - - TROUBLESHOOTING <A/T> - SYMPTOM PROCEDURES - Inspection Procedure 17: Shift Switch Assembly System <4G63, 4G64>PRINT PAGE / INDEX / PRIOR / NEXT
Inspection Procedure 17: Shift Switch Assembly System <4G63, 4G64>
OPERATION
The shift switch assembly detects the shift range (sport mode) which the driver has selected, and sends the information to the engine-A/T-ECU.
COMMENTS ON TROUBLE SYMPTOM
The cause is probably a malfunction of the shift switch and engine-A/T-ECU.
PROBABLE CAUSES
  • Malfunction of shift switch assembly
  • Damaged harness wires and connectors
  • Malfunction of the engine-A/T-ECU
DIAGNOSIS PROCEDURE
STEP 1. MUT-II/III data list
Item 61: Inhibitor switch (Refer to data list reference table ).
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Refer to inspection procedure 16: Inhibitor switch system .
STEP 2. MUT-II/III data list
  • Item 67: Select switch
  • Item 68: Upshift switch
  • Item 69: Downshift switch
Check the above data list (Refer to data list reference table ).
Q: Is the check result normal?
YES:  Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO <"NG" for all items>:  Go to Step 3.
NO <"NG" for items 68 and 69>:  Go to Step 5.
NO <"NG" for item 67>:  Go to Step 10.
NO <"NG" for item 68>:  Go to Step 19.
NO <"NG" for item 69>:  Go to Step 22.
STEP 3. Connectors check: D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> shift switch assembly connector, C-109 engine-A/T-ECU connector, C-105 intermediate connector <R.H. drive vehicles>
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the defective connector.
STEP 4. MUT-II/III data list
  • Item 67: Select switch
  • Item 68: Upshift switch
  • Item 69: Downshift switch
Check the above data list (Refer to data list reference table ).
Q: Is the check result normal?
YES:  Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO:  Replace the engine-A/T-ECU.
STEP 5. Check the shift switch assembly.
Refer to <L.H. drive vehicles> or <R.H. drive vehicles>.
Q: Is the check result normal?
YES:  Go to Step 6.
NO:  Replace the shift switch assembly.
STEP 6. Connector check: D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> shift switch assembly connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 7.
NO:  Repair the defective connector.
STEP 7. Measure the voltage at shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles>
  1. Disconnect the connector, and measure the voltage between terminal 3 and earth at the wiring harness side.
  1. Ignition switch: ON
    2. OK: System voltage
Q: Is the check result normal?
YES:  Go to Step 4.
NO <L.H. drive vehicles>:  Go to Step 8.
NO <R.H. drive vehicles>:  Go to Step 9.
STEP 8. Connectors check: C-16 J/C(1), C-106 intermediate connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 9.
NO:  Repair the defective connector.
STEP 9. Check the harness between shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> terminal No.3 and junction block connector C-202 terminal No.12.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the wiring harness.
STEP 10. Check the shift switch assembly.
Refer to <L.H. drive vehicles> or <R.H. drive vehicles>.
Q: Is the check result normal?
YES:  Go to Step 11.
NO:  Replace the shift switch assembly.
STEP 11. Connector check: D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> shift switch assembly connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 12.
NO:  Repair the defective connector.
STEP 12. Measure the voltage at shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles>
  1. Disconnect the connector, and measure the voltage between terminal 1 and earth at the wiring harness side.
  1. Selector lever position: D
  1. Ignition switch: ON
    2. OK: System voltage
Q: Is the check result normal?
YES:  Go to Step 13.
NO <R.H. drive vehicles>:  Go to Step 17.
NO <L.H. drive vehicles>:  Go to Step 18.
STEP 13. Connectors check: C-109 engine-A/T-ECU connector, C-105 intermediate connector <R.H. drive vehicles>
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 14.
NO:  Repair the defective connector.
STEP 14. Check the harness between shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> terminal No.4 and engine-A/T-ECU connector C-109 terminal No.109.
Check the output line for short-circuited or open circuit.
Q: Is the check result normal?
YES:  Go to Step 15.
NO:  Repair the wiring harness.
STEP 15. Connector check: C-05 combination meter connector, C-106 intermediate connector <L.H. drive vehicles>
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 16.
NO:  Repair the defective connector.
STEP 16. Checkt the harness between shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> terminal No.2 and combination meter connector C-05 terminal No.1.
Check the output line for short-circuited or open circuit.
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the wiring harness.
STEP 17. Connector check: C-105 intermediate connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 18.
NO:  Repair the defective connector.
STEP 18. Check the harness between shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> terminal No.1 and inhibitor switch connector B-22 terminal No.1.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the wiring harness.
STEP 19. Check the shift switch assembly.
Refer to <L.H. drive vehicles> or <R.H. drive vehicles>.
Q: Is the check result normal?
YES:  Go to Step 20.
NO:  Replace the shift switch assembly.
STEP 20. Connectors check: D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> shift switch assembly connector, C-109 engine-A/T-ECU connector, C-105 intermediate connector <R.H. drive vehicles>
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 21.
NO:  Repair the defective connector.
STEP 21. Check the harness between shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> terminal No.6 and engine-A/T-ECU connector C-109 terminal No.122.
Check the output line for short-circuited or open circuit.
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the wiring harness.
STEP 22. Check the shift switch assembly.
Refer to <L.H. drive vehicles> or <R.H. drive vehicles>.
Q: Is the check result normal?
YES:  Go to Step 23.
NO:  Replace the shift switch assembly.
STEP 23. Connectors check: D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> shift switch assembly connector, C-109 engine-A/T-ECU connector, C-105 intermediate connector <R.H. drive vehicles>
Check for the contact with terminals.
Q: Is the check result normal?
YES:  Go to Step 24.
NO:  Repair the defective connector.
STEP 24. Check the harness between shift switch assembly connector D-36 <L.H. drive vehicles> or C-129 <R.H. drive vehicles> terminal No.5 and engine-A/T-ECU connector C-109 terminal No.110.
Check the output line for short-circuited or open circuit.
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the wiring harness.
[23A] AUTOMATIC TRANSMISSION (FF) - - TROUBLESHOOTING <A/T> - SYMPTOM PROCEDURES - Inspection Procedure 17: Shift Switch Assembly System <4G63, 4G64>PRINT PAGE / INDEX / PRIOR / NEXT
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