[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G64-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - DIAGNOSTIC TROUBLE CODE PROCEDURES - Code No.15 Auto-cruise Control Switch System | PRINT PAGE / INDEX / PRIOR / NEXT

Code No.15 Auto-cruise Control Switch System
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set if the auto-cruise control RESUME switch or SET switch remains ON.
PROBABLE CAUSES Malfunction of the connector. Malfunction of the harness. Malfunction of the auto-cruise control switch. Malfunction of the clock spring. Malfunction of the auto-cruise control-ECU.
DIAGNOSIS PROCEDURE
STEP 1. Measure at auto-cruise control switch connector C-301. Disconnect auto-cruise control switch connector C-301 and measure at the harness side. Ignition switch: ON Voltage between terminal 1 and body earth. OK: System voltage Q: Is the check result normal? YES: Go to Step 5. NO: Go to Step 2.
STEP 2. Check the clock spring. Refer to GROUP 52B - Air Bag Module and Clock Spring Inspection . Q: Is the check result normal? YES: Go to Step 3. NO: Replace the clock spring. (Refer to GROUP 52B - Air Bag Module and Clock Spring ). Then go to Step 11.
STEP 3. Check auto-cruise control switch connector C-301, clock spring connectors C-308 and C-309, junction block connector C-205 and intermediate connector C-302. Q: Is the check result normal? YES: Go to Step 4. NO: Repair or replace connector. Then go to Step 11.
STEP 4. Check the harness between the junction block connector C-205 and auto-cruise control switch connector C-301. Q: Is the check result normal? YES: This malfunction is intermittent. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ). NO: Repair harness. Then go to Step 11.
STEP 5. Measure at auto-cruise control-ECU connector C-113. Do not disconnect auto-cruise control-ECU connector C-113 and measure at the backprobing. Ignition switch: ON Auto-cruise control MAIN switch: ON Voltage between terminal 9 and body earth. OK: 2.3 - 3.5 volts (When auto-cruise control RESUME switch ON). 0.4 - 2.3 volts (When auto-cruise control SET switch ON). Q: Is the check result normal? YES: Go to Step 10. NO: Go to Step 6.
STEP 6. Check the auto-cruise control switch. Refer to . Q: Is the check result normal? YES: Go to Step 7. NO: Replace the auto-cruise control switch. (Refer to ). Then go to Step 11.
STEP 7. Check the clock spring. Refer to GROUP 52B - Air Bag Module and Clock Spring Inspection . Q: Is the check result normal? YES: Go to Step 8. NO: Replace the clock spring. (Refer to GROUP 52B - Air Bag Module and Clock Spring ). Then go to Step 11.
STEP 8. Check auto-cruise control switch connector C-301, clock spring connectors C-308 and C-309, auto-cruise control-ECU connector C-113 and intermediate connector C-302 and C-106 <R.H. drive vehicles only>. Q: Is the check result normal? YES: Go to Step 9. NO: Repair or replace connector. Then go to Step 11.
STEP 9. Check the harness between the auto-cruise control switch connector C-301 and auto-cruise control-ECU connector C-113. Q: Is the check result normal? YES: This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ). NO: Repair harness. Then go to Step 11.
STEP 10. Check the MUT-II/III diagnosis code No. 15. Q: Is the MUT-II/III diagnosis code No. 15 set? YES: Replace the auto-cruise control-ECU. (Refer to ). Then go to Step 11. NO: This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
STEP 11. Check the MUT-II/III diagnosis code No. 15. Q: Is the MUT-II/III diagnosis code No. 15 set? YES: Return to Step 1. NO: This procedure is complete.

[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G64-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - DIAGNOSTIC TROUBLE CODE PROCEDURES - Code No.15 Auto-cruise Control Switch System | PRINT PAGE / INDEX / PRIOR / NEXT

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