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caution |
- If there is any problem in the CAN bus lines,
an incorrect diagnosis code may be set. Prior to this diagnosis, always diagnose the CAN bus
lines.
- Before replacing the ECU, ensure that the communication circuit is normal.
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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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Repair the CAN bus line. (Refer to GROUP 54C -
Troubleshooting .)
Then go to Step 2.
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Check the following service data. (Refer to .)
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- Item 07: CAN system (ABS/ASC)
- Item 16: FL wheel speed sensor
- Item 17: FR wheel speed sensor
- Item 18: RL wheel speed sensor
- Item 19: RR wheel speed sensor
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Q.
Is the check result normal?
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Troubleshoot the ABS system. (Refer to GROUP 35C -
Troubleshooting .)
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Check the connectors below for improper engagement, terminal damage or terminal drawn
in the connector case.
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- C-130 4WD-ECU connector
- C-313, C-317 ETACS-ECU connector
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Q.
Are the connectors and terminals in good condition?
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Repair the connector(s) or terminal(s). Then go to Step 6.
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Check the wiring harness between the C-130 4WD-ECU connector and the C-313 ETACS-ECU connector
for damage or other problem.
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Q.
Is the wiring harness in good condition?
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Repair damage or other problem in the wiring harness. Then go to Step 6.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code No. U0415 set?
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Replace 4WD-ECU. (Refer to .) Then go to Step
6.
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This diagnosis is complete.
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Q.
Is the diagnosis code No. U0415 set?
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Diagnose again from Step 1.
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This diagnosis is complete.
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