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Inspection Procedure 7: When the Auto-Cruise Control MAIN Switch is Turned ON, the Auto-Cruise Control Indicator Lamp dose not Illuminate. (However, the Auto-Cruise Control in Normal).
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COMMENTS ON TROUBLE SYMPTOM
There may be a burnt-out indicator bulb or a malfunction of the auto-cruise control indicator lamp circuit.
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PROBABLE CAUSES
- Burnt-out indicator bulb.
- Malfunction of the connector.
- Malfunction of the harness.
- Malfunction of the auto-cruise control-ECU.
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STEP 1. Check the auto-cruise control indicator bulb.
Remove the combination meter (Refer to GROUP 54 - Combination Meter Assembly  ), and check the auto-cruise control indicator bulb.
Q: Is the check result normal?
YES:
Go to Step 2  .
NO:
Replace the indicator bulb (Refer to GROUP 54A - Combination Meter ). Then go to Step 9 .
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STEP 2. Measure at combination meter connector C-04.
Disconnect combination meter connector C-04 and measure at the harness side.
- Voltage between terminal 42 and body earth.
OK: System voltage
Q: Is the check result normal?
YES:
Go to Step 5 .
NO:
Go to Step 3 .
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STEP 3. Check combination meter connector C-04 and junction block connector C-205. Q: Is the check result normal?
YES:
Go to Step 4 .
NO:
Repair or replace connector. Then go to Step 9 .
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STEP 4. Check the harness between the junction block connector C-205 and combination meter connector C-04. 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 9 .
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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.
- Auto-cruise control MAIN switch: ON
- Voltage between terminal 15 and body earth.
OK: System voltage
Q: Is the check result normal?
YES:
Go to Step 8 .
NO:
Go to Step 6 .
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STEP 6. Check combination meter connector C-05, auto-cruise control-ECU connector C-113 and intermediate connector C-104 <R.H. drive vehicles only>. Q: Is the check result normal?
YES:
Go to Step 7 .
NO:
Repair or replace connector. Then go to Step 9 .
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STEP 7. Check the harness between the combination meter connector C-05 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 9 .
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STEP 8. Retest the system. Q: Does a malfunction take place again?
YES:
Replace the auto-cruise control-ECU (Refer to ). Then go to Step 9 .
NO:
This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
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STEP 9. Retest the system. Q: Does a malfunction take place again?
YES:
Return to Step 1 .
NO:
This malfunction is eliminated.
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