Code No. U1195:
Coding not completed
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- 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
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- If diagnosis code U1195 is set in ABS-ECU, always diagnose the CAN bus line. If
there is any fault in the CAN bus lines, an incorrect diagnosis code may be set. In this case,
the set diagnosis code is not highly reliable.
- Whenever ECU is replaced, ensure that the CAN bus lines are normal.
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OPERATION
This diagnosis code will be set when the variant coding for the ETACS-ECU has not been implemented.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when the variant coding for ETACS-ECU has not been implemented.
PROBABLE CAUSES
- The CAN bus line is defective.
- Malfunction of the ETACS-ECU
- Malfunction of the hydraulic unit assembly (integrated with ABS-ECU)
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STEP 1. M.U.T.-III CAN bus diagnosis
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Use the 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 lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
On completion, go to Step 2.
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STEP 2. Diagnosis code recheck after resetting CAN bus lines
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Q.
Is diagnosis code No. U1195 set?
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Go to Step 3.
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This diagnosis is complete.
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STEP 3. Use M.U.T.-III to confirm a diagnosis code of other systems.
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Check whether a diagnosis code is set in the ETACS-ECU (Refer to GROUP 54A - ETACS,
Diagnosis Code Chart ).
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Q.
Is the diagnosis code set?
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Follow the relevant diagnosis code procedure (Refer to GROUP 54A - ETACS,
Diagnosis Code Chart ). Then go to Step 6.
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Go to Step 4.
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STEP 4. ETACS-ECU coding data check.
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Using M.U.T.-III, check if any abnormality is present to the coding data which are stored
in the ETACS-ECU.
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Q.
Is the check result normal?
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Go to Step 6.
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ). Then
go to Step 5.
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STEP 5. Check whether the diagnosis code is set again.
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Check again if the diagnosis code is set.
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(1)Turn the ignition switch to the "LOCK" (OFF) position.
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(2)Turn the ignition switch to the "ON" position.
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(3)Check if the diagnosis code is set.
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(4)Turn the ignition switch to the "LOCK" (OFF) position.
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Q.
Is diagnosis code No. U1195 set?
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Replace the hydraulic unit assembly (integrated with ABS-ECU) (Refer to ). Then
go to Step 6.
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction ).
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STEP 6. Check whether the diagnosis code is set again.
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Check again if the diagnosis code is set.
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(1)Turn the ignition switch to the "LOCK" (OFF) position.
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(2)Turn the ignition switch to the "ON" position.
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(3)Check if the diagnosis code is set.
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(4)Turn the ignition switch to the "LOCK" (OFF) position.
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Q.
Is diagnosis code No. U1195 set?
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Return to Step 1.
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The procedure is complete.
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