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)

STEP

INSPECTION

ACTION

1

• Is the ABS 40A fuse normal?

Yes

Go to the next step.

No

Replace the fuse, then go to Step 5.

2

• Turn the ignition switch off.

• 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

• Turn the ignition switch off.

• 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

• 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 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

• 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

• Are any other DTCs present?

Yes

Go to the applicable DTC inspection.

(See ON-BOARD DIAGNOSIS[ABS].)

No

DTC troubleshooting completed.