9-202
P0606
EAS20677
P0606
EAS33306
TROUBLESHOOTING
Item
Internal malfunction in ECU. (When this malfunction is detected in the ECU, the DTC might not appear
on the tool display.)
Fail-safe system
• Able/Unable to start engine
• Able/Unable to drive vehicle
Procedure
1. Check and repair for simultaneous malfunction.
• Check the items of DTCs P0122, P0123, P0222, P0223 and P2135, if they are detected at the same
time, correct the P0122, P0123, P0222, P0223 and P2135 first.
• Turn the main switch to “ON”, and then check the condition of the DTC using the malfunction mode
of the YDT.
2. Malfunction in ECU.
• Replace the ECU.
Refer to “REPLACING THE ECU (Engine Control Unit)” on page 8-56.
• Turn the main switch to “ON”.
• Check that the MIL does not come on.
3. Delete the DTC and check that the MIL goes off.
• Confirm that the DTC has a condition of “Recovered” using the YDT, and then delete the DTC.
Is it in the “Recovered” condition?
YES
→ Go to step 3, and complete the service.
NO
→ Go to step 2.
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