[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G69-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - DIAGNOSTIC TROUBLE CODE PROCEDURES - Code No.22 Stop Lamp Switch System | PRINT PAGE / INDEX / PRIOR / NEXT

Code No.22 Stop Lamp Switch System
OPERATION Battery positive voltage is supplied to the stop lamp switch (terminal 2 and 4). When the brake pedal is depressed, battery positive voltage is applied to the engine-A/T-ECU (terminal 39 and 54).
DIAGNOSIS CODE SET CONDITIONS Check Condition The "CRUISE" indicator light illuminates. Judgement Criteria Short in stop lamp switch circuit. Open circuit in the brake switch circuit (between engine-A/T-ECU terminal 54 and earth).
PROBABLE CAUSES Malfunction of the stop lamp switch. Damaged harness or connector. Malfunction of the engine-A/T-ECU.
DIAGNOSIS PROCEDURE
STEP 1. MUT-II/III data list Item 05: Stop lamp switch (Refer to data list reference table ). Q: Is the check result normal? YES: Go to Step 14. NO: Go to Step 2.
STEP 2. Check the stop lamp operation. Check the stop lamp operation. OK: Brake pedal depressed: Stop lamp will illuminate Brake pedal not depressed: Stop lamp does not illuminate Q: Is the check result normal? YES: Go to Step 3. NO: Go to Step 6.
STEP 3. Measure the voltage at engine-A/T-ECU connector C-135. Turn the ignition switch to the "ON" position. Measure the voltage between engine-A/T-ECU connector C-135 terminal No.39 and earth. OK: Brake pedal depressed: System voltage Brake pedal not depressed: 1 V or less Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the check result normal? YES: Go to Step 13. NO: Go to Step 4.
STEP 4. Connectors check: C-135 engine-A/T-ECU connector, C-16 J/C (1), C-104 intermediate connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair or replace the damaged components. Then go to Step 23.
STEP 5. Check the harness between engine-A/T-ECU connector C-135 terminal No.39 and stop lamp switch connector C-101 terminal No.1. Q: Is the check result normal? YES: Go to Step 13. NO: Repair the damaged harness wire. Then go to Step 23.
STEP 6. Measure the voltage at stop lamp switch connector C-101. Disconnect stop lamp switch connector C-101. Measure the voltage between stop lamp switch connector C-101 terminal No.2 and earth. OK: System voltage Connect stop lamp switch connector C-101. Q: Is the check result normal? YES: Go to Step 10. NO: Go to Step 7.
STEP 7. Connectors check: C-101 stop lamp switch connector, C-116 intermediate connector Q: Is the check result normal? YES: Go to Step 8. NO: Repair or replace the damaged components. Then go to Step 23.
STEP 8. Check the harness between stop lamp switch connector C-101 terminal No.2 and fuse No.11 at the relay box in engine compartment for damage. Q: Is the check result normal? YES: Go to Step 9. NO: Repair the damaged harness wire. Then go to Step 23.
STEP 9. Check the fuse No.11 at the relay box in engine compartment. Q: Is the check result normal? YES: Go to Step 10. NO: Check the stop lamp system harness and replace the fuse. Then go to Step 23.
STEP 10. Check the stop lamp switch. Refer to . Q: Is the check result normal? YES: Install the stop lamp switch (Refer to GROUP 35A, Brake Pedal ). Then go to Step 11. NO: Replace the stop lamp switch (Refer to GROUP 35A, Brake Pedal ). Then go to Step 23.
STEP 11. Connectors check: C-101 stop lamp switch connector, C-104 intermediate connector, C-16 J/C (1), C-135 engine-A/T-ECU connector Q: Is the check result normal? YES: Go to Step 12. NO: Repair or replace the damaged components. Then go to Step 23.
STEP 12. Check the harness between stop lamp switch connector C-127 terminal No.1 and engine-A/T-ECU connector C-135 terminal No.39. Q: Is the check result normal? YES: Go to Step 13. NO: Repair the damaged harness wire. Then go to Step 23.
STEP 13. MUT-II/III data list Item 05: Stop lamp switch (Refer to data list reference table ). Q: Is the check result normal? YES: Go to Step 22. NO: Replace the engine-A/T-ECU (Refer to GROUP 13C, Engine-A/T-ECU ). Then go to Step 23.
STEP 14. MUT-II/III data list Item 06: Brake switch (Refer to data list reference table ). Q: Is the check result normal? YES: Go to Step 22. NO: Go to Step 15.
STEP 15. Measure the voltage at engine-A/T-ECU connector C-135. Turn the ignition switch to the "ON" position. Measure the voltage between engine-A/T-ECU connector C-135 terminal No.54 and earth. OK: Brake pedal depressed: System voltage Brake pedal not depressed: 1 V or less Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the check result normal? YES: Go to Step 21. NO: Go to Step 16.
STEP 16. Check the stop lamp switch. Refer to . Q: Is the check result normal? YES: Install the stop lamp switch (Refer to GROUP 35A, Brake Pedal ). Then go to Step 17. NO: Replace the stop lamp switch (Refer to GROUP 35A, Brake Pedal ). Then go to Step 23.
STEP 17. Connectors check: C-135 engine-A/T-ECU connector, C-105 intermediate connector <L.H. drive vehicles> or C-106 intermediate connector <R.H. drive vehicles>, C-101 stop lamp switch connector Q: Is the check result normal? YES: Go to Step 18. NO: Repair or replace the damaged components. Then go to Step 23.
STEP 18. Check the harness between engine-A/T-ECU connector C-135 terminal No.54 and stop lamp switch connector C-101 terminal No.3. Q: Is the check result normal? YES: Go to Step 19. NO: Repair the damaged harness wire. Then go to Step 23.
STEP 19. Connectors check: C-101 stop lamp switch connector, C-14 intermediate connector <R.H. drive vehicles only> Q: Is the check result normal? YES: Go to Step 20. NO: Repair or replace the damaged components. Then go to Step 23.
STEP 20. Check the harness between stop lamp switch connector C-101 terminal No.4 and earth. Q: Is the check result normal? YES: Go to Step 21. NO: Repair the damaged harness wire. Then go to Step 23.
STEP 21. MUT-II/III data list Item 06: Brake switch (Refer to data list reference table ). Q: Is the check result normal? YES: Go to Step 22. NO: Replace the engine-A/T-ECU (Refer to GROUP 13C, Engine-A/T-ECU ). Then go to Step 23 .
STEP 22. Check the MUT-II/III diagnosis code No.22. Q: Is the MUT-II/III diagnosis code No.22 set? YES: Replace the engine-A/T-ECU (Refer to GROUP 13C, Engine-A/T-ECU ). Then go to Step 23 . NO: It can be assumed that this malfunction is intermittent.
STEP 23. Check the MUT-II/III diagnosis code No.22. Q: Is the MUT-II/III diagnosis code No.22 set? YES: Return to Step 1. NO: The procedure is complete.

[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G69-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - DIAGNOSTIC TROUBLE CODE PROCEDURES - Code No.22 Stop Lamp Switch System | PRINT PAGE / INDEX / PRIOR / NEXT

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