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DTC C1095, C1096

BHE040243000W19

DTC | C1095, C1096 | Pump motor, motor relay,
DETECTION CONDITION | • C1095 – DSC motor monitor signal does not correspond to DSC HU/CM OFF signal. • C1096 – DSC motor monitor signal does not correspond to DSC HU/CM ON signal. – DSC motor monitor OFF signal is input within specified time limit when the motor signal is switched from ON to OFF by DSC HU/CM.
POSSIBLE CAUSE | • ABS/DSC 60 A fuse malfunction • Open circuit or short to ground in the wiring harness between the battery and the DSC HU/CM terminal AG • Open circuit in the wiring harness between the DSC HU/CM terminal AN and the body ground • Open or short circuit in the DSC HU/CM internal motor relay, or stuck motor relay • Open or short circuit in the DSC HU/CM internal pump motor, or frozen pump motor • Poor connection at connectors (female terminal)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT ABS/DSC FUSE CONDITION • Is the ABS/DSC 60A fuse normal? | Yes | Go to the next step.
No | Replace the fuse, then go to Step 5.
2 | INSPECT MOTOR RELAY POWER SUPPLY FOR OPEN CIRCUIT • Turn the ignition switch off. • Disconnect DSC HU/CM connector. • Turn the ignition switch to the ON position (engine off). • Measure voltage between DSC HU/CM terminal AG (harness-side) and ground. • Is the voltage B+? | Yes | Go to the next step.
No | Repair or replace the wiring harness for open circuit between battery positive terminal and DSC HU/CM terminal AG, then go to Step 5.
3 | INSPECT PUMP MOTOR GROUND FOR OPEN CIRCUIT • Turn the ignition switch off. • Inspect for continuity between DSC HU/CM terminal AN (harness-side) and ground. • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness for open circuit between DSC HU/CM terminal AN and ground, then go to Step 5.
4 | VERIFY PUMP MOTOR OPERATION • Turn the ignition switch off. • Connect the WDS or equivalent to the DLC-2. • Turn the ignition switch to the ON position (engine off). • Access PMP_MOTOR active command modes using WDS or equivalent. • Does the pump motor operate? | Yes | Go to the next step.
No | Replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
5 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the memory. (See Clearing DTCs Procedures.) • Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more. • Gradually slow down and stop the vehicle. • Is the same DTC present? | Yes | Replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
No | Go to the next step.
6 | VERIFY AFTER REPAIR PROCEDURE • Are any other DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC Table.)
No | DTC troubleshooting completed.