DTC C1095, C1096

id040200800800

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 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.
1	INSPECT ABS FUSE CONDITION • Is the ABS 40A fuse normal?	No	Replace the fuse, then go to Step 5.
2	INSPECT MOTOR RELAY POWER SUPPLY FOR OPEN CIRCUIT • Turn the ignition switch or engine switch off. • Disconnect ABS HU/CM connector. • Turn the ignition switch or engine 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.
2		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 or engine switch off. • Inspect for continuity between ABS HU/CM terminal A (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 ABS HU/CM terminal A and ground, then go to the next step.
4	VERIFY PUMP MOTOR OPERATION • Turn the ignition switch or engine switch off. • Connect the M-MDS to the DLC-2. • Turn the ignition switch or engine 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 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.) • Start the engine and drive the vehicle at 12 km/h {7.5 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.)
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.)
6		No	DTC troubleshooting completed.

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 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)