DTC C1095 [ABS]


B3E040243000W05

DTC

C1095

Pump motor, motor relay

DETECTION CONDITION

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

POSSIBLE CAUSE

• ABS 1 (30 A) fuse malfunction
• Open circuit or short to ground in the wiring harness between the battery and ABS HU/CM terminal Z
• Open circuit in the wiring harness between ABS HU/CM terminal B and body ground
• Open or short circuit in ABS HU/CM internal motor relay, or stuck motor relay
• Open or short circuit in ABS HU/CM internal pump motor, or frozen pump motor
• Poor connection at connectors (female terminal)

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT ABS FUSE CONDITION
• Is the ABS fuse (ABS 1 30 A) normal?
Yes
Go to the next step.
No
Replace the ABS fuse, then go to Step 6.
2
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.
• Access PMP _MOTOR active command modes using the WDS or equivalent.
• Does the pump motor operate?
Yes
Go to the next step.
No
Replace the ABS HU/CM, then go to Step 6.
3
INSPECT MOTOR RELAY POWER SUPPLY FOR OPEN CIRCUIT
• Turn the ignition switch off.
• Disconnect the ABS HU/CM connector.
• Inspect for continuity between ABS HU/CM terminal Z and the positive battery terminal.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 6.
4
INSPECT MOTOR RELAY POWER SUPPLY FOR SHORT CIRCUIT
• Inspect for continuity between ABS HU/CM terminal Z and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to Step 6.
No
Go to the next step.
5
INSPECT PUMP MOTOR GROUND FOR OPEN CIRCUIT
• Inspect for continuity between ABS HU/CM terminal B and body ground.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to the next step.
6
VERIFY THAT THE SAME DTC IS NOT PRESENT
• Reconnect all disconnected connectors.
• Clear the DTCs from the memory.
• Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more.
• Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the ABS HU/CM, then go to the next step.
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCS ARE PRESENT
• Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See DTC Table.)
No
DTC troubleshooting completed.