DTC C1095, C1096 [ABS]

id0402a7805900

DTC | C1095, C1096 | Pump motor, motor relay system
DETECTION CONDITION | • C1095 ― When the pump motor monitor voltage remains at 2.0 V or more for 1 s ― ABS motor monitor OFF signal is input within specified time limit when the motor signal is switched from ON to OFF by ABS HU/CM. • C1096 ― When the difference between the battery power supply voltage and pump motor power supply voltage remains at 4.0 V or more for 0.1 s or more while the pump motor is operating
POSSIBLE CAUSE | • ABS 40 A fuse malfunction • Open or short to ground circuit in the wiring harness between the battery and the ABS HU/CM terminal B • Open circuit in the wiring harness between the ABS HU/CM terminal A and the body ground • Open or short circuit in the ABS HU/CM internal motor relay, or stuck motor relay • Open or short circuit in the ABS HU/CM internal motor, or frozen motor • Fail-safe relay malfunction • Poor connection at connectors (female terminal)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT ABS FUSE CONDITION • Is the ABS 40A 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 to the LOCK position. • Disconnect ABS HU/CM connector. • Turn the ignition switch to the ON position (engine off). • Measure voltage between ABS HU/CM terminal B (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 ABS HU/CM terminal B, then go to Step 5.
3 | INSPECT PUMP MOTOR GROUND FOR OPEN CIRCUIT • Turn the ignition switch to the LOCK position. • Inspect for continuity between ABS HU/CM terminal A (harness-side) and ground. • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness for open circuit between ABS HU/CM terminal A and ground, then go to Step 5.
4 | VERIFY PUMP MOTOR OPERATION • Turn the ignition switch to the LOCK position. • 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 M-MDS. • Does the pump motor operate? | Yes | Go to the next step.
No | Replace the ABS HU/CM, then go to the next step. (See ABS HU/CM REMOVAL/INSTALLATION.)
5 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the memory. (See ON-BOARD DIAGNOSIS [ABS].) • 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 ABS HU/CM, then go to the next step. (See ABS 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 ON-BOARD DIAGNOSIS [ABS].)
No | DTC troubleshooting completed.