DTC P187B:00 [ELECTRONIC 4WD CONTROL SYSTEM]
id0302a6200300
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DTC P187B:00
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A tire diameter is outside of the allowable range
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DETECTION CONDITION
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• 4WD control module detects a tire diameter is outside of the allowable range
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FAIL-SAFE FUNCTION
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• 4WD protection condition (4WD control paused)
• 4WD warning light: Illuminated
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POSSIBLE CAUSE
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• Detects a tire diameter which is outside of the allowable range to switch to 2WD and protect the system.
• Flat tire
• Wrong tire pressure
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SYSTEM WIRING DIAGRAM
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Not applicable
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT A TIRE DIAMETER
• Is the tire diameter as specified?
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Yes
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Go to the next step.
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No
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Replace with specified tire.
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2
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VERIFY THAT THE SAME DTC IS NOT PRESENT
• Clear the DTCs from the memory.
• Drive the vehicle in a straight line at 10 km/h {6.2 mph} or more for 10 s or more.
• Using the M-MDS, perform the 4WD control module DTC inspection.
• Is the same DTC present?
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Yes
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Replace the 4WD control module.
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No
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Go to the next step.
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3
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VERIFY THAT NO OTHER DTCS ARE PRESENT
• Are any other DTCs output?
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Yes
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Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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