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DTC C1280, C1730, C1951, C1952, C1959 [DSC]

id040220875000

DTC | C1280, C1730, C1951, C1952, C1959 | Combined sensor
DETECTION CONDITION | • C1280: - Yaw rate sensor part 0-point correction value is 3 or more, or 2 or less - Output voltage value from yaw rate sensor part remains absolutely unchanged - Difference between estimated yaw rate value, calculated from ABS wheel speed-sensor, lateral-G sensor, steering angle sensor, and the value output from yaw rate sensor exceeds specification • C1730 - Voltage to combined sensor is detected out of range • C1952: - Voltage of yaw rate sensor monitor is detected at 3.5 V or less • C1951: - Monitor voltage of lateral-G sensor is detected at 4.5 V or more, or 0.5 V or less - Monitor voltage difference of 1.25 V or more, within 1 cycle is detected 8 times in 1 s • C1959: - Lateral-G sensor part 0-point correction value is 3 or more, or 2 or less - Output voltage value from lateral-G sensor part remains absolutely unchanged - Difference between estimated lateral-G force calculated from steering angle sensor, and the value output from lateral-G sensor exceeds specification
POSSIBLE CAUSE | • Open circuit in harness between combined sensor terminal C and DSC HU/CM terminal P • Open, short to power, or short to ground circuit in harness between DSC HU/CM terminal T and combined sensor terminal D • Open circuit, short to power, or short to ground in harness between DSC HU/CM terminal O and combined sensor terminal B • Open circuit in harness between combined sensor terminal E and DSC HU/CM terminal Y • Open circuit, short to power, or short to ground in harness between DSC HU/CM terminal S and combined sensor terminal F • Malfunction of combined sensor

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT COMBINED SENSOR POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Turn ignition key to ON (engine OFF). • Measure voltage between combined sensor terminal C (harness side) of and ground. • Is voltage 4.5-5.5 V? | Yes | Go to next step.
No | Repair or replace harness for open circuit between yaw rate sensor terminal C and ignition switch, then go to Step 8.
2 | INSPECT COMBINED SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT • Turn ignition key to OFF. • Disconnect DSC HU/CM and yaw rate sensor connectors. • Inspect continuity between DSC HU/CM terminal Y (harness side) and combined sensor terminal E (harness side). • Is there continuity? | Yes | Go to next step.
No | Repair or replace harness for open circuit between DSC HU/CM terminal Y and yaw rate sensor terminal E, then go to Step 8.
3 | INSPECT YAW RATE SENSOR PART SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect continuity between DSC HU/CM terminal T (harness side) and combined sensor terminal D (harness side). • Is there continuity? | Yes | Go to next step.
No | Repair or replace harness for open circuit between DSC HU/CM terminal T and yaw rate sensor terminal D, then go to Step 8.
4 | INSPECT LATERAL-G SENSOR PART SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect continuity between DSC HU/CM terminal O (harness side) and combined sensor terminal B (harness side). • Is there continuity? | Yes | Go to next step.
No | Repair or replace harness for open circuit between DSC HU/CM terminal O and combined sensor terminal B, then go to Step 8.
5 | INSPECT YAW RATE SENSOR PART SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Inspect continuity between DSC HU/CM terminal T (harness side) and ground. • Is there continuity? | Yes | Repair or replace harness for short to ground circuit between DSC HU/CM terminal T and combined sensor terminal D, then go to Step 8.
No | Go to next step.
6 | INSPECT LATERAL-G SENSOR PART SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Inspect continuity between DSC HU/CM terminal O (harness side) and ground. • Is there continuity? | Yes | Repair or replace harness for short to ground circuit between DSC HU/CM terminal O and combined sensor terminal B, then go to Step 8.
No | Go to next step.
7 | INSPECT DIAGNOSIS SIGNAL CIRCUIT FOR SHORT FOR OPEN • Turn ignition key to OFF. • Inspect continuity between DSC HU/CM terminal S (harness side) and combined sensor terminal F. • Is there continuity? | Yes | Repair or replace harness for open circuit between DSC HU/CM terminal S and combined sensor terminal F, then go to Step 8.
No | Go to next step.
8 | INSPECT DIAGNOSIS SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Inspect continuity between DSC HU/CM terminal S (harness side) and combined sensor terminal F. • Is there continuity? | Yes | Repair or replace harness for short to ground circuit between DSC HU/CM terminal S and combined sensor terminal F, then go to Step 8.
No | Go to next step.
9 | INSPECT COMBINED SENSOR • Inspect combined sensor. (See COMBINED SENSOR INSPECTION.) • Is it normal? | Yes | Go to next step.
No | Replace combined sensor, then go to next step.
10 | VERIFY TROUBLESHOOTING COMPLETED • Clear DTC from memory. (See Clearing DTCs Procedures.) • Is the same DTC present? | Yes | Replace DSC HU/CM, then go to next step.
No | Go to next step.
11 | 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.