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DTC C1095, C1096 [DSC]

id040220805900

DTC | C1095, C1096 | Motor relay, pump motor
DETECTION CONDITION | • C1095: - No motor monitor signal congruency is detected in relation to DSC HU/CM ON signal • C1096: - No motor monitor signal congruency is detected in relation to DSC HU/CM OFF signal - Motor monitor ON signal is not input after specified time when the motor signal is switched from ON to OFF by DSC HU/CM
POSSIBLE CAUSE | • Malfunction of fuse (ABS 60 A) • Open circuit in harness between DSC HU/CM terminal D and battery positive terminal • Open circuit in harness between DSC HU/CM terminal B and body ground • Open or short of motor relay and/or pump motor in DSC HU/CM • Stuck motor relay and/or pump motor in DSC HU/CM

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY OTHER DTC HAS BEEN RECORDED • If any of DTC C1186 and/or C1266 has also been stored? | Yes | Go to applicable DTC inspection.
No | Go to next step.
2 | INSPECT ABS FUSE CONDITION • Is ABS fuse (60 A) normal? | Yes | Go to next step.
No | Replace fuse, then go to Step 6.
3 | INSPECT MOTOR RELAY POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Turn ignition key to OFF. • Disconnect DSC HU/CM connector. • Turn ignition key to ON (engine OFF). • Measure voltage between DSC HU/CM terminal D (harness side) and ground. • Is voltage B+? | Yes | Go to next step.
No | Repair or replace harness for open circuit between battery positive terminal and DSC HU/CM terminal D, then go to Step 9.
4 | INSPECT PUMP MOTOR GROUND CIRCUIT FOR OPEN CIRCUIT • Turn ignition key to OFF. • Inspect continuity between DSC HU/CM terminal B (harness side) and ground. • Is there continuity? | Yes | Go to next step.
No | Repair or replace harness for open circuit between DSC HU/CM terminal B and ground, then go to Step 6.
5 | VERIFY PUMP MOTOR OPERATION • Turn ignition key to OFF. • Connect all disconnected connectors. • Connect WDS or equivalent to DLC-2. • Turn ignition key to ON (engine OFF). • Access ABS_POWER and PMP_MOTOR active command modes using WDS or equivalent. • Does pump motor operate? | Yes | Go to next step.
No | Repair DSC HU/CM, then go to next step.
6 | VERIFY TROUBLESHOOTING COMPLETED • Clear DTC from memory. (See Clearing DTCs Procedures.) • Start engine and drive vehicle at 10 km/h {6.2 mph} or above. • Gradually slow down and stop vehicle. • Is same DTC present? | Yes | Replace DSC HU/CM, then go to next step.
No | Go to next step.
7 | 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.