DTC C1095, C1096 [DSC/RSC]

id0402b3800800

DTC | C1095, C1096 | Pump motor, motor relay system
DETECTION CONDITION | • C1095 ― ABS motor monitor OFF signal is input within specified time limit when the motor signal is switched from ON to OFF by DSC/RSC HU/CM. • C1096 ― When pump motor monitor voltage continues for 0.05s more than 0.75V among the pump motor ON.
POSSIBLE CAUSE | • ABS 50A fuse malfunction • Open or short to ground circuit in the wiring harness between the battery and the DSC/RSC HU/CM terminal AK • Open circuit in the wiring harness between the DSC/RSC HU/CM terminal B and the body ground • Open or short circuit in the DSC/RSC HU/CM internal motor relay, or stuck motor relay • Open or short circuit in the DSC/RSC HU/CM internal motor, or frozen motor • Motor relay malfunction • DSC/RSC HU/CM malfunction • Poor connection at connectors (female terminal)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT ABS FUSE CONDITION • Is the ABS 50A 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/RSC HU/CM connector. • Turn the ignition switch to the ON position (engine off). • Measure voltage between DSC/RSC HU/CM terminal AK (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/RSC HU/CM terminal AK, then go to Step 5.
3 | INSPECT PUMP MOTOR GROUND FOR OPEN CIRCUIT • Turn the ignition switch off. • Inspect for continuity between DSC/RSC HU/CM terminal B (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/RSC HU/CM terminal B and ground, then go to Step 5.
4 | VERIFY PUMP MOTOR OPERATION • Turn the ignition switch off. • Connect the M-MDS to the DLC-2. • Turn the ignition switch to the ON position (engine off). • Access PMP_MOTOR active command modes using the M-MDS. • Does the pump motor operate? | Yes | Go to the next step.
No | Replace the DSC/RSC HU/CM, then go to the next step. (See DSC/RSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC/RSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
5 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the memory. (See ON-BOARD DIAGNOSIS [DSC/RSC].) • Gradually slow down and stop the vehicle. • Is the same DTC present? | Yes | Replace the DSC/RSC HU/CM, then go to the next step. (See DSC/RSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC/RSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
No | Go to the next step.
6 | VERIFY AFTER REPAIR PROCEDURE • Are any other DTCs present? | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DSC/RSC].)
No | DTC troubleshooting completed.