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.
1	INSPECT ABS FUSE CONDITION • Is the ABS 50A fuse normal?	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.
2		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.
3		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.
4		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.].)
5		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].)
6		No	DTC troubleshooting completed.

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)