Code No.U1108:
Meter CAN timeout
caution |
- If there is any
problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis,
diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table
).
- Before replacing the ECU, ensure that the communication circuit is normal.
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OPERATION
The ABS-ECU receives ABS-related signal from combination meter via the CAN bus lines.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when ABS-ECU has detected the communication error in the combination meter.
PROBABLE CAUSES
- Damaged wiring harness or connector
- Malfunction of the combination meter
- Malfunction of the ABS-ECU
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STEP 1. M.U.T.-III CAN bus diagnostics
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Use M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Go to Step 3.
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Repair the CAN bus line (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
Then go to Step 2.
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STEP 2. Diagnosis code recheck after resetting CAN bus lines
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(1)Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch from the "ON" position to the "LOCK" (OFF) position.
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Q.
Is diagnosis code No.C1108 set?
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Go to Step 3.
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This diagnosis is complete.
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STEP 3. M.U.T.-III other diagnosis code
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Use M.U.T.-III to check that other diagnosis code is set in the combination meter.
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Q.
Is other diagnosis code set?
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Perform troubleshooting for combination meter (Refer to GROUP 54A - ETACS,
Troubleshooting ). Then go to Step 7.
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Go to Step 4.
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STEP 4. Connector check: ABS-ECU connector
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Q.
Is the check result normal?
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Go to Step 5.
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NO : Repair the damaged connector. Then go to Step 7.
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STEP 5. M.U.T.-III other diagnosis code
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Use M.U.T.-III to check that diagnosis code is set in the ECUs.
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Perform troubleshooting for combination meter (Refer to GROUP 54A - ETACS,
Troubleshooting ). Then go to Step 7.
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Go to Step 6.
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STEP 6. Check whether the diagnosis code is set again.
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(1)Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch from the "ON" position to the "LOCK" (OFF) position.
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Replace the hydraulic unit [(integrated with ABS-ECU) Refer to ].
Then go to Step 7.
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Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent
Malfunctions ).
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STEP 7. Check whether the diagnosis code is set again.
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(1)Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch from the "ON" position to the "LOCK" (OFF) position.
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Go to Step 1.
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The procedure is complete.
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