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Use M.U.T.-III to perform the CAN bus diagnosis.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C -
Troubleshooting ). After repairing the CAN bus line, go to Step 2.
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Q.
Does the malfunction occur again?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
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Combination meter item No.5: Meter illumination (Refer to GROUP 54A -
Combination Meter ).
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Q.
Is the check result normal?
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Replace the combination meter. (Refer to GROUP 54A -
Combination Meter ). Then go to Step 8.
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(1)Remove the 4WD switch (Refer to ).
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(2)Measure the resistance between the terminals (Refer to ).
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Q.
Is the check result normal?
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Replace the 4WD switch (Refer to ). Then go to Step 8.
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(1)Check the wiring harness between the 4WD-ECU connector (terminal sw-1) and the 4WD switch connector.
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(2)Check the connector(s) or terminal(s) or wiring harness above for damage or other problem.
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Q.
Is the check result normal?
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Repair the connector(s) or terminal(s) or wiring harness.
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(1)Disconnect the 4WD switch connector.
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(2)Measure the resistance between the 4WD switch wiring harness side connector and the body earth. OK: Continuity exists (2 Ω
or less)
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Q.
Is the check result normal?
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Repair the connector(s) or terminal(s) or wiring harness.
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Check the following data list. (Refer to ).
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- Item 1: AWC (4WD) control mode
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Q.
Is the check result normal?
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Q.
Does the malfunction occur again?
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Replace 4WD-ECU (Refer to ). Then go to Step 9.
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The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
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Q.
Does the malfunction occur again?
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Troubleshoot the combination meter multi information display (Refer to GROUP 54A -
Troubleshooting/CAN Bus Diagnostics Table ). Then diagnose again from Step 1.
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This diagnosis is complete.
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