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Inspection Procedure 2: Even if Brake Pedal is Depressed, Auto-Cruise Control is not Cancelled.
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COMMENTS ON TROUBLE SYMPTOM
The cause is probably a malfunction of stop lamp switch or a malfunction of stop lamp circuit.
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PROBABLE CAUSES
- Malfunction of the connector.
- Malfunction of the harness.
- Malfunction of the stop lamp switch.
- Malfunction of the auto-cruise control-ECU.
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STEP 1. Check the stop lamp. Q: Does the stop lamp illuminated?
YES:
Go to Step 6  .
NO:
Go to Step 2 .
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STEP 2. Check the stop lamp switch.
Refer to  .
Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Replace the stop lamp switch (Refer to GROUP 35A - Brake Pedal ). Then go to Step 10 .
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STEP 3. Measure at stop lamp switch connector C-101.
Disconnect stop lamp switch connector C-101 and measure at the harness side.
- Voltage between terminal 2 and body earth.
OK: System voltage
Q: Is the check result normal?
YES:
Go to Step 6 .
NO:
Go to Step 4 .
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STEP 4. Check stop lamp switch connector C-101 and intermediate connector C-116. Q: Is the check result normal?
YES:
Go to Step 5 .
NO:
Repair or replace connector. Then go to Step 10 .
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STEP 5. Check the harness between the relay box and stop lamp switch connector C-101. 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 .
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STEP 6. Measure at auto-cruise control-ECU connector C-113.
Disconnect auto-cruise control-ECU connector C-113 and measure at the harness side.
- Voltage between terminal 4 and body earth.
OK: System voltage (When brake pedal is depressed).
Q: Is the check result normal?
YES:
Go to Step 9 .
NO:
Go to Step 7 .
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STEP 7. Check auto-cruise control-ECU connector C-113, stop lamp switch connector C-101, joint connector (1) C-16 <R.H. drive vehicles only>
and intermediate connector C-104 <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 .
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STEP 8. Check the harness between the stop lamp switch connector C-101 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 .
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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 ).
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STEP 10. Retest the system. Q: Does a malfunction take place again?
YES:
Return to Step 1 .
NO:
This malfunction is eliminated.
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