[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G64-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - SYMPTOM PROCEDURES - Inspection Procedure 1: Communication with MUT-II/III is not Possible (Communication with Auto-Cruise Control-ECU only is not Possible). | PRINT PAGE / INDEX / PRIOR / NEXT

SYMPTOM PROCEDURES

Inspection Procedure 1: Communication with MUT-II/III is not Possible (Communication with Auto-Cruise Control-ECU only is not Possible).
COMMENTS ON TROUBLE SYMPTOM One of the following causes may be suspected. No power supply to the auto-cruise control-ECU. Defective earth circuit of the auto-cruise control-ECU. Defective the auto-cruise control-ECU. Improper communication line between the auto-cruise control-ECU and MUT-II/III.
PROBABLE CAUSES Malfunction of the connector. Malfunction of the harness. Malfunction of the auto-cruise control-ECU.
DIAGNOSIS PROCEDURE
STEP 1. Measure at auto-cruise control-ECU connector C-113. Disconnect auto-cruise control-ECU connector C-113 and measure at the harness side. Ignition switch: ON Voltage between terminal 6 and body earth. OK: System voltage Q: Is the check result normal? YES: Go to Step 4. NO: Go to Step 2.
STEP 2. Check auto-cruise control-ECU connector C-113, junction block connector C-205 and intermediate connector C-106 <R.H. drive vehicles only>. Q: Is the check result normal? YES: Go to Step 3. NO: Repair or replace connector. Then go to Step 10.
STEP 3. Check the harness between the junction block connector C-205 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 10.
STEP 4. Measure at auto-cruise control-ECU connector C-113. Disconnect auto-cruise control-ECU connector C-113 and measure at the harness side. Continuity between terminal 14 and body earth. OK: Continuity Q: Is the check result normal? YES: Go to Step 7. NO: Go to Step 5.
STEP 5. Check auto-cruise control-ECU connector C-113 and joint connector (2) C-17 <R.H. drive vehicles only>. Q: Is the check result normal? YES: Go to Step 6. NO: Repair or replace connector. Then go to Step 10.
STEP 6. Check the harness between the auto-cruise control-ECU connector C-113 and body earth. 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 10.
STEP 7. Check auto-cruise control-ECU connector C-113, diagnosis connector C-24 and intermediate connector C-105 <R.H. drive vehicles only>. Q: Is the check result normal? YES: Go to Step 8. NO: Repair or replace connector. Then go to Step 10.
STEP 8. Check the harness between the auto-cruise control-ECU connector C-113 and diagnosis connector C-24. Q: Is the check result normal? YES: Go to Step 9. NO: Repair harness. Then go to Step 10.
STEP 9. Retest the system. Q: Does a malfunction take place again? YES: Replace the auto-cruise control-ECU (Refer to ). Then go to Step 10. NO: This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
STEP 10. Retest the system. Q: Does a malfunction take place again? YES: Return to Step 1. NO: This malfunction is eliminated.

[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G64-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - SYMPTOM PROCEDURES - Inspection Procedure 1: Communication with MUT-II/III is not Possible (Communication with Auto-Cruise Control-ECU only is not Possible). | PRINT PAGE / INDEX / PRIOR / NEXT

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