[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> Disconnect the connector, and measure the voltage between terminal 3 and earth at the wiring harness side. Ignition switch: ON 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> Disconnect the connector, and measure the voltage between terminal 1 and earth at the wiring harness side. Selector lever position: D Ignition switch: ON 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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