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- Using M.U.T.-III, perform CAN busline diagnosis.
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Q.
Is the check result normal?
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Correct CAN busline (Refer to Group 54F - Diagnosis - CAN Bus
Diagnostics Chart ), and then go to Step 6 .
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- Confirm whether the diagnosis code is output from A/C-ECU.
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Q.
Is the diagnosis code set?
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Perform the troubleshooting of A/C-ECU (Refer to GROUP 54E Troubleshooting - Inspection
Chart For Diagnosis Code ).
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Confirm whether Diagnosis Code U1110 A/C-ECU time-out is output from the following ECU
having CAN communication with A/C-ECU.
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Q.
Is the diagnosis code set?
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- Reconfirm whether the diagnosis code is output from engine-A/T-ECU.
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- Erase the diagnosis code being output.
- Ignition switch: LOCK (OFF) to ON
- Confirm whether the diagnosis code is output.
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Q.
Is the diagnosis code set?
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Replace A/C-ECU, then go to Step 6 .
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Intermittent malfunction in CAN busline between engine-A/T-ECU and A/C-ECU (Refer
to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
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- Reconfirm whether the diagnosis code is output from engine-A/T-ECU.
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- Erase the diagnosis code being output.
- Ignition switch: LOCK (OFF) to ON
- Confirm whether the diagnosis code is output.
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Q.
Is the diagnosis code set?
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Replace engine-A/T-ECU, go to Step 6 .
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Intermittent malfunction in CAN busline between engine-A/T-ECU and A/C-ECU (Refer
to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
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|
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- Reconfirm whether the diagnosis code is output from engine-A/T-ECU.
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- Erase the diagnosis code being output.
- Ignition switch: LOCK (OFF) to ON
- Confirm whether the diagnosis code is output.
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Q.
Is the diagnosis code set?
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