DTC C1095, C1096

BHE040243000W19

DTC

C1095, C1096

Pump motor, motor relay,

DETECTION CONDITION

• C1095
– DSC motor monitor signal does not correspond to DSC HU/CM OFF signal.
• C1096
– DSC motor monitor signal does not correspond to DSC HU/CM ON signal.
– DSC motor monitor OFF signal is input within specified time limit when the motor signal is switched from ON to OFF by DSC HU/CM.

POSSIBLE CAUSE

• ABS/DSC 60 A fuse malfunction
• Open circuit or short to ground in the wiring harness between the battery and the DSC HU/CM terminal AG
• Open circuit in the wiring harness between the DSC HU/CM terminal AN and the body ground
• Open or short circuit in the DSC HU/CM internal motor relay, or stuck motor relay
• Open or short circuit in the DSC HU/CM internal pump motor, or frozen pump motor
• Poor connection at connectors (female terminal)

Diagnostic procedure

STEP

INSPECTION

ACTION

1

INSPECT ABS/DSC FUSE CONDITION

• Is the ABS/DSC 60A 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 HU/CM connector.
• Turn the ignition switch to the ON position (engine off).
• Measure voltage between DSC HU/CM terminal AG (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 HU/CM terminal AG, then go to Step 5.
3

INSPECT PUMP MOTOR GROUND FOR OPEN CIRCUIT

• Turn the ignition switch off.
• Inspect for continuity between DSC HU/CM terminal AN (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 HU/CM terminal AN and ground, then go to Step 5.
4

VERIFY PUMP MOTOR OPERATION

• Turn the ignition switch off.
• Connect the WDS or equivalent to the DLC-2.
• Turn the ignition switch to the ON position (engine off).
• Access PMP_MOTOR active command modes using WDS or equivalent.
• Does the pump motor operate?
Yes
Go to the next step.
No
Replace the DSC HU/CM, then go to the next step.
5

VERIFY TROUBLESHOOTING COMPLETED

• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the memory.
• 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 DSC HU/CM, then go to the next step.
No
Go to the next step.
6

VERIFY AFTER REPAIR PROCEDURE

• Are any other DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC Table.)
No
DTC troubleshooting completed.