DTC C1279, C1280, C1281, C1282, C2778 [DSC]

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DTC C1279, C1280, C1281, C1282, C2778 [DSC]

B3E040243000W22

DTC | C1279, C1280, C1281, C1282, C2778 | Combined sensor system

DETECTION CONDITION

• C1279, C1280

  - Out-of-specification signal modulation or yaw rate value is detected from the combined sensor (yaw rate part).

• C1281, C1282

  - Out-of-specification signal modulation or lateral-G value is detected from the combined sensor (lateral-G part).

• C2778

  - An error is detected for the voltage to the combined sensor.

POSSIBLE CAUSE

• 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)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | 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? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to Step 4.
2 | 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? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to Step 4.
3 | INSPECT COMBINED SENSOR • Inspect the combined sensor. (See COMBINED SENSOR INSPECTION.) • Is the combined sensor normal? | Yes | Go to the next step.
No | Replace the combined sensor, then go to the next step. (See COMBINED SENSOR REMOVAL/INSTALLATION.)
4 | VERIFY THAT THE SAME DTC IS NOT PRESENT • Clear the DTCs from the memory. (See Clearing DTCs Procedures.) • Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more. • Are the same DTCs present? | Yes | Repeat the inspection from Step 1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
No | Go to the next step.
5 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? | Yes | Go to the applicable DTC inspection. (See DTC Table.)
No | DTC troubleshooting completed.