DTC C1279, C1280, C1281, C1282, C2778 [DYNAMIC STABILITY CONTROL (DSC)]
id0402b2804100
DTC
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C1279, C1280, C1281, C1282, C2778
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Combined sensor system
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DETECTION CONDITION
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• C1279, C1280
• C1281, C1282
• C2778
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POSSIBLE CAUSE
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• Open or short circuit in the wiring harness between DSC HU/CM terminal AB and combined sensor terminal D
• Open or short circuit in the wiring harness between DSC HU/CM terminal AH and combined sensor terminal E
• Open circuit in the wiring harness between DSC HU/CM terminal T and combined sensor terminal A (CAN2 line)
• Open circuit in the wiring harness between DSC HU/CM terminal H and combined sensor terminal B (CAN2 line)
• Combined sensor malfunction
• Poor connection at connectors (female terminal)
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Diagnostic procedure
STEP |
INSPECTION |
ACTION |
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1
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INSPECT COMBINED SENSOR POWER SUPPLY FOR OPEN CIRCUIT
• Turn the ignition switch to the ON position.
• Measure the voltage between the combined sensor terminal D and body ground.
• Is the voltage approx. 12 V?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness, then go to Step 4.
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2
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INSPECT COMBINED SENSOR GROUND FOR OPEN CIRCUIT
• Turn the ignition switch off.
• Inspect for continuity between the combined sensor terminal E and body ground.
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness, then go to Step 4.
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3
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INSPECT COMBINED SENSOR
• Inspect the combined sensor.
(See COMBINED SENSOR INSPECTION.)
• Is the combined sensor normal?
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Yes
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Go to the next step.
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No
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Replace the combined sensor, then go to the next step.
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4
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VERIFY THAT THE SAME DTC IS NOT PRESENT
• Clear the DTCs from the memory.
• Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more.
• Are the same DTCs present?
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Yes
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Repeat the inspection from Step 1.
If the malfunction recurs, replace the DSC CM, then go to the next step.
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No
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Go to the next step.
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5
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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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